slug: rhododendron-aureum

scientific: Rhododendron aureum

authorship: Georgi

epithet: aureum

published_in: Bemerk. Reise Russ. Reich 1: 214 (1775)

Azalea chrysantha

authorship: (Pall.) Kuntze

Rhododendron aureum subsp. hypopitys

authorship: (Pojark.) Vorosch.

Rhododendron aureum var. hypopitys

authorship: (Pojark.) P.A.Schmidt

Rhododendron chrysanthum

authorship: Pall.

Rhododendron hypopitys

authorship: Pojark.

codes: ALT AMU BRY CTA IRK JAP KAM KHA KOR KRA KUR MAG CHM MON PRM SAK TVA WSB YAK

Altay

code: ALT

Amur

code: AMU

region: Russian Far East

Buryatiya

code: BRY

Chita

code: CTA

Irkutsk

code: IRK

Japan

code: JAP

Kamchatka

code: KAM

Khabarovsk

code: KHA

Korea

code: KOR

Krasnoyarsk

code: KRA

Kuril Is.

code: KUR

Magadan

code: MAG

Manchuria

code: CHM

Mongolia

code: MON

region: Mongolia

Primorye

code: PRM

Sakhalin

code: SAK

Tuva

code: TVA

West Siberia

code: WSB

Yakutiya

code: YAK

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 878 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 牛皮杜鹃 牛皮茶

label: Woodiness

reason: Not published anywhere on this site. Every care claim we could make cheaply would be an unsourced enum, which is what the previous version of this site did and why it was deleted.


slug: rhododendron-austrinum

scientific: Rhododendron austrinum

authorship: (Small) Rehder

genus: Rhododendron

epithet: austrinum

family: Ericaceae

rank: species

taxonomic_status: accepted

accepted_according_to: World Flora Online Plant List, 2026-06

preferred: orange azalea

source: wikidata

Azalea austrina

authorship: Small

note: Full per-image metadata (photographer, licence, licence URL, attribution, derivative restrictions and image URLs) is on the per-species JSON at per_image_metadata_url. Each image is licensed individually; this bulk file omits the per-image matrix to stay small and cleanly licensed.

scheme: TDWG World Geographical Scheme for Recording Plant Distributions, level 3

source: Kew, World Checklist of Vascular Plants (WCVP v16)

license: CC BY 3.0

excludes: introduced extinct location_doubtful

codes: ALA FLA GEO MSI

Alabama

code: ALA

continent: NORTHERN AMERICA

region: Southeastern U.S.A.

Florida

code: FLA

Georgia

code: GEO

Mississippi

code: MSI

lifeform: shrub or tree

climate: temperate

mean_annual_temp_c: degrees Celsius

min_temp_coldest_month_c: degrees Celsius (mean daily MINIMUM of the coldest month)

max_temp_warmest_month_c: degrees Celsius (mean daily MAXIMUM of the warmest month)

annual_precip_mm: millimetres per year

precip_driest_quarter_mm: millimetres in the driest quarter

source: CHELSA V2.1 climatologies 1981-2010, 30 arcsec

citation: Karger, D.N. et al. (2017) Climatologies at high resolution for the earth's land surface areas. Scientific Data 4, 170122.

occurrences: iNaturalist Research-grade Observations

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 207 of them. Species with fewer than 30 georeferenced observations get no envelope.

hardiness_zone_note: min_temp_coldest_month_c is NOT a USDA hardiness zone. A USDA zone is the average annual EXTREME minimum temperature; this is the mean daily minimum of the coldest month, which is typically about 16 C warmer. Do not present one as the other.

model: Google AIY plants V1 (TFLite, 2,102 classes)

names:
orange azalea
Florida azalea

source: Wikidata (P1843, CC0) + GBIF vernacular names

license: CC0 / per-source

type: pollinatedBy

label: Pollinated by

partners: Lepidoptera Trochilidae

type: visitedBy

label: Visited by

partners:
Euodynerus bidens
Papilio palamedes

source: Global Biotic Interactions (GloBI)

license: CC-BY 4.0 (aggregate) / per-source

note: Species recorded interacting with this plant in the wild, aggregated across many source datasets by GloBI. Provenance is asserted at the GloBI aggregate level, not per partner, and partners are the most frequently recorded per interaction type.

label: Growth habit

category: Form and habit

value: shrub

source: USDA PLANTS

source: GIFT

license: CC-BY 4.0

source: EOL TraitBank / USDA PLANTS

license: Public domain (U.S. Government work)

key: woodiness

value: woody

label: Life cycle

category: Life cycle

value: perennial

USDA PLANTS Database

license: Public domain (US Government work)

name: GIFT (Global Inventory of Floras and Traits)

license: CC BY 4.0

EOL TraitBank (via Zenodo)

license: Per record: CC0 / CC BY 4.0 / public domain only

name: Traits mined from USDA NRCS plant guides

source: USDA PLANTS, GIFT, Wikidata, EOL TraitBank (via Zenodo) and traits mined from USDA NRCS plant guides

license: per source (public domain, CC BY 4.0, CC0)

note: Structured growth characteristics merged from four open sources (USDA PLANTS, GIFT, Wikidata, EOL TraitBank via Zenodo) plus traits mined from public-domain USDA NRCS guides. A documented record, not care advice. Each value keeps every source that reported it; a value marked extracted:true was read from prose, carries a verbatim quote and source_url, and has no structured source corroborating it.

authors: Rehder in L.H.Bailey

published_in: Stand. Cycl. Hort. 6: 3571

source: IPNI (International Plant Names Index)

note: The protologue citation: who published the name, in which work and year, and the IPNI record it resolves to. This is naming provenance, not a description.

World Flora Online Plant List

note: accepted name, authority, classification

iNaturalist

note: photographs and flowering annotations, CC0 / CC BY / CC BY-SA only

license: per photograph

Wikidata

note: common name (P1843), joined on the World Flora Online identifier (P7715)

note: native distribution by TDWG level-3 botanical country, and life form

field: care

field: toxicity

reason: Not published. The widely copied list is a copyrighted compilation restricted to noncommercial use, and we will not scrape it. A sourced toxicity dataset is being built from primary literature and is not ready.

reason: No page on this site has been reviewed by a named botanist. The determination label says so, on every page.

reason: Not published for any species. A USDA hardiness zone is the average annual EXTREME minimum temperature, and we hold the mean daily minimum of the coldest month, which is a different quantity and typically about 16 C warmer. Presenting one as the other would place a plant several zones too warm, so we do not publish a zone at all.

data: CC BY 4.0

note: This document is licensed CC BY 4.0. The PHOTOGRAPHS it links are licensed individually and separately: each carries its own license and license_url, and those terms govern. Underlying taxonomy is CC0 (World Flora Online); native range is CC BY 3.0 (Kew).


slug: rhododendron-barbatum

scientific: Rhododendron barbatum

authorship: Wall. ex G.Don

epithet: barbatum

Azalea barbata

authorship: (Wall. ex G.Don) Kuntze

Rhododendron aristatum

authorship: Royle

Rhododendron barbatum f. imberbe

authorship: (Hutch.) H.Hara

Rhododendron imberbe

authorship: Hutch.

codes: CHT EHM NEP WHM

Tibet

code: CHT

continent: ASIA-TEMPERATE

region: China

East Himalaya

code: EHM

continent: ASIA-TROPICAL

region: Indian Subcontinent

Nepal

code: NEP

West Himalaya

code: WHM

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 37 of them. Species with fewer than 30 georeferenced observations get no envelope.

source: Kew World Checklist of Useful Plant Species

note: Categories in which this species is recorded as a useful plant. A record of use, not a recommendation, a dose or a safety claim.

value: tree

label: Height

category: Size

value: 8 m

label: Leaf retention

category: Foliage

value: evergreen

label: Photosynthetic pathway

category: Physiology

published_in: Gen. Hist. 3: 844

name: Kew, World Checklist of Vascular Plants (WCVP v16)

reason: No vernacular name for this taxon in Wikidata (P1843) or iNaturalist. We do not invent one, and we do not present the scientific name as though it were a common name.

field: phenology

reason: Only 4 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-beyerinckianum

scientific: Rhododendron beyerinckianum

authorship: Koord.

epithet: beyerinckianum

name: Rhododendron beyerinckianum var. longipetiolatum

Rhododendron chrysopeplon

authorship: Sleumer

Rhododendron dasylepis

authorship: Schltr.

Rhododendron saavedranum

authorship: Diels

New Guinea

code: NWG

region: Papuasia

lifeform: hemiepiphytic shrub or tree

climate: montane tropical

iucn_category: LC

label: Least Concern

source: IUCN Red List category via Wikidata (P141)

license: CC0 (Wikidata); IUCN category is a factual label

authors: Koord.

published_in: Nova Guinea 8: 876

reason: Fewer than 30 georeferenced research-grade observations of this taxon, which is too few to state a percentile range for the conditions it grows in. We would rather show nothing than a range computed from eight points in one county.

reason: Only 2 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-bloembergenii

scientific: Rhododendron bloembergenii

epithet: bloembergenii

published_in: Reinwardtia 5: 204 (1960)

Sulawesi

code: SUL

region: Malesia

lifeform: shrub

authors: Sleumer

published_in: Reinwardtia 5: 204

reason: No dated flowering annotations found for this taxon.


slug: rhododendron-breviperulatum

scientific: Rhododendron breviperulatum

authorship: Hayata

epithet: breviperulatum

published_in: Icon. Pl. Formosan. 3: 129 (1913)

name: Rhododendron rubropilosum var. breviperulatum

authorship: (Hayata) T.Yamaz

Taiwan

code: TAI

region: Eastern Asia

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 103 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Nan-Au azalea
Woolly-styled rhododendron

names: 南澳杜鵑 埔里杜鵑

names: たんおうつつじ ほりしやつつじ

value: 3 m

authors: Hayata

published_in: Icon. Pl. Formosan. 3: 129

reason: Only 16 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-calendulaceum

scientific: Rhododendron calendulaceum

authorship: (Michx.) Torr.

epithet: calendulaceum

published_in: Fl. N. Middle United States 1: 425 (1824)

preferred: flame azalea

Azalea calendulacea

authorship: Michx.

Azalea conccinea

authorship: Lodd.

Azalea crocea

authorship: (Michx.) Hoffmanns.

Azalea jammea

authorship: Pritz.

Azalea speciosa

authorship: Willd.

Azalea speciosa var. aurantia

authorship: (G.Lodd.) DC.

Azalea speciosa var. coccinea

authorship: (Aiton) DC.

Rhododendron calendulaceum f. aurantium

authorship: (F.Dietr.) Rehder

name: Rhododendron calendulaceum f. calendulaceum

Rhododendron calendulaceum var. croceum

authorship: (Michx.) Sweet

Rhododendron luteum var. croceum

authorship: (Michx.) C.K.Schneid.

Rhododendron speciosum

authorship: (Willd.) Sweet

codes: ALA GEO KTY MRY NWY NCA OHI PEN SCA TEN VRG WVA

Kentucky

code: KTY

Maryland

code: MRY

New York

code: NWY

region: Northeastern U.S.A.

North Carolina

code: NCA

Ohio

code: OHI

Pennsylvania

code: PEN

South Carolina

code: SCA

Tennessee

code: TEN

Virginia

code: VRG

West Virginia

code: WVA

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1955 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон ноготковидный

names: Rhododendron calendulacé, Azalée de flamme

names:
oranž asalea
oranž rodo

type: flowerVisitedBy

label: Flower-visited by

partners:
Amphion floridensis
Bombus bimaculatus
Hemaris diffinis
Lepidoptera
Papilio glaucus
Papilio troilus
Trochilidae

type: eatenBy

label: Eaten by

source: EOL TraitBank / Fire Effects Information System (USDA)


slug: rhododendron-campanulatum

scientific: Rhododendron campanulatum

epithet: campanulatum

published_in: Mem. Wern. Nat. Hist. Soc. 3: 410 (1821)

Azalea campanulata

authorship: (D.Don) Kuntze

name: Rhododendron campanulatum subsp. campanulatum

Rhododendron edgarii

authorship: Gamble

Rhododendron mutabile

authorship: Webb ex Royle

Rhododendron nobile

authorship: Wall.

Rhododendron planifolium

authorship: Nutt.

Tibet

code: CHT

climate: subalpine or subarctic

names: Рододендрон колокольчатый

partners:
Aguriahana rhododendri
Stephanitis rhododendri

published_in: Mem. Wern. Nat. Hist. Soc. iii. (1821) 410

reason: Only 3 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-campylocarpum

scientific: Rhododendron campylocarpum

epithet: campylocarpum

published_in: Rhododendr. Sikkim-Himalaya 3: t. 30 (1851)

Azalea campylocarpa

authorship: (Hook.f.) Kuntze

Rhododendron caloxanthum

authorship: Balf.f. & Farrer

name: Rhododendron campylocarpum subsp. telopeum

authorship: (Balf.f. & Forrest) D.F.Chamb.

name: Rhododendron campylocarpum var. orbiculare

authorship: Demoly

Rhododendron telopeum

authorship: Balf.f. & Forrest

codes: CHC CHT EHM MYA NEP

China South-Central

code: CHC

East Himalaya

code: EHM

Myanmar

code: MYA

region: Indo-China

names: 红花杜鹃 弯果杜鹃

names: Рододендрон изогнутоплодный

names:
gul klockrododendron
indisk guldrododendron

partners:
Dialeurodes chittendeni
Stephanitis rhododendri

type: hasParasite

label: Parasites

published_in: Rhododendr. Sikkim-Himalaya t. 30

reason: Only 5 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-camtschaticum

scientific: Rhododendron camtschaticum

authorship: Pall.

epithet: camtschaticum

preferred: Kamchatka rhododendron

Azalea kamtschatica

authorship: (Pall.) Kuntze

Chamaecistus kamtschaticus

authorship: (Pall.) Regel

name: Rhododendron camtschaticum subsp. camtschaticum

name: Rhododendron camtschaticum var. albiflorum

authorship: Koidz.

name: Rhododendron camtschaticum var. glandulosum

authorship: (Standl. ex Small) B.Bovin

Rhododendron glandulosum

authorship: (Standl. ex Small) Millais

name: Rhododendron kamtschaticum var. albiflorum

Rhodothamnus camtschaticus

authorship: (Pall.) Lindl. & Paxton

Therorhodion camtschaticum

authorship: (Pall.) Small

name: Therorhodion camtschaticum f. albiflorum

authorship: (Koidz.) Nakai

Therorhodion camtschaticum var. pumilum

authorship: (E.A.Busch) T.Yamaz

Therorhodion glandulosum

authorship: Standl. ex Small

codes: JAP KAM KHA KUR MAG SAK ASK ALU

Japan

code: JAP

Kamchatka

code: KAM

Khabarovsk

code: KHA

Kuril Is.

code: KUR

Magadan

code: MAG

Sakhalin

code: SAK

Alaska

code: ASK

region: Subarctic America

Aleutian Is.

code: ALU

lifeform: subshrub

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 517 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон камчатский

label: Flowering months

category: Flowers and fruit

value: Jun-Jul

authors: Pall.


slug: rhododendron-canadense

scientific: Rhododendron canadense

authorship: (L.) Torr.

epithet: canadense

published_in: Rep. Bot. Dep. Surv. New York, no. 50, Assembly : 151 (1841)

preferred: Rhodora

english: Rhodora rhodora

source: inat

Azalea canadensis

authorship: (L.) Kuntze

Hochenwartia canadensis

authorship: (L.) Crantz

Rhododendron canadense f. albiflorum

authorship: (E.L.Rand & Redf.) Rehder

Rhododendron canadense f. album

authorship: Voss.

Rhododendron canadense f. viridifolium

authorship: Fernald

Rhododendron pulchellum

authorship: Salisb.

Rhododendron rhodora f. albiflorum

authorship: E.L.Rand & Redfield

Rhodora canadensis

authorship: L.

Rhodora congesta

authorship: Moench

codes: CNT LAB MAI MAS NBR NWH NWJ NWY NFL NSC ONT PEN PEI QUE RHO VER

Connecticut

code: CNT

Labrador

code: LAB

region: Eastern Canada

Maine

code: MAI

Massachusetts

code: MAS

New Brunswick

code: NBR

New Hampshire

code: NWH

New Jersey

code: NWJ

New York

code: NWY

Newfoundland

code: NFL

Nova Scotia

code: NSC

Ontario

code: ONT

Pennsylvania

code: PEN

Prince Edward I.

code: PEI

Québec

code: QUE

Rhode I.

code: RHO

Vermont

code: VER

lifeform: subshrub or shrub

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2013 of them. Species with fewer than 30 georeferenced observations get no envelope.

species: Epilobium angustifolium

slug: epilobium-angustifolium

names:
rhodora
Canada rhododendron

names:
rhododendron du Canada
rhodora du Canada

partners: Apoidea Trochilidae

partners:
Bombus ternarius
Bombus vagans
Andrena rufosignata
Apis mellifera
Apoidea
Bombus bimaculatus
Bombus flavidus
Bombus frigidus

partners:
Alces americanus
Ancylis rhoderana
Archilochus colubris
Castor canadensis
Clepsis persicana
Lagopus lagopus
Lepus americanus
Microtus pennsylvanicus

published_in: Rep. Bot. Dep. Surv. New York, no. 50, Assembly 151

iNaturalist

note: photographs, flowering annotations and the common name, CC0 / CC BY / CC BY-SA only


slug: rhododendron-canescens

scientific: Rhododendron canescens

authorship: (Michx.) Sweet

epithet: canescens

preferred: mountain azalea

Azalea bicolor

authorship: (Aiton) Pursh

Azalea candida

authorship: Small

Azalea canescens

authorship: Michx.

Azalea canescens var. candida

authorship: (Small) Ashe

Azalea nudiflora var. bicolor

authorship: Aiton

Azalea nudiflora var. canescens

authorship: (Michx.) Rehder

Rhododendron bicolor

authorship: (Aiton) Sweet

Rhododendron candidum

authorship: (Small) Rehder

Rhododendron canescens f. subglabrum

authorship: Rehder

codes: ALA ARK FLA GEO ILL KTY LOU MSI NCA OKL SCA TEN TEX

Alabama

code: ALA

Arkansas

code: ARK

Florida

code: FLA

Georgia

code: GEO

Illinois

code: ILL

region: North-Central U.S.A.

Kentucky

code: KTY

Louisiana

code: LOU

Mississippi

code: MSI

North Carolina

code: NCA

Oklahoma

code: OKL

South Carolina

code: SCA

Tennessee

code: TEN

Texas

code: TEX

region: South-Central U.S.A.

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1990 of them. Species with fewer than 30 georeferenced observations get no envelope.

partners:
Danaus plexippus
Papilio glaucus
Papilio palamedes
Asbolis capucinus
Epargyreus clarus

partners:
Epargyreus clarus
Papilio glaucus

label: Growth form

value: Multiple Stem

label: Growth rate

value: slow


slug: rhododendron-catawbiense

scientific: Rhododendron catawbiense

epithet: catawbiense

preferred: Catawba rosebay

Azalea catawbiensis

authorship: (Michx.) Kuntze

Hymenanthes catawbiensis

authorship: (Michx.) H.F.Copel.

licences: CC0 CC-BY CC-BY-SA

codes: ALA GEO KTY NCA TEN VRG WVA

Virginia

code: VRG

West Virginia

code: WVA

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1593 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Catawba rosebay
Catawba Rhododendron

names: 卡托巴杜鹃 椭圆叶杜鹃

names: azaléia mini-azaléia

names: Рододендрон кэтевбинский

names: catawba-rododendron catawbarododendron

names: parkrhododendron parkrododendron

names:
katavba rodo
katavba rododendron

partners:
Bombus bimaculatus
Bombus impatiens
Analeptura lineola
Bombus melanopygus
Bombus perplexus
Bombus sandersoni
Halictus rubicundus
Lepidoptera

partners:
Boisea trivittata
Bombus bimaculatus
Graphocephala fennahi
Pyrobombus

partners:
Analeptura lineola
Dialeurodes chittendeni
Stephanitis rhododendri


slug: rhododendron-caucasicum

scientific: Rhododendron caucasicum

authorship: Pall.

epithet: caucasicum

Azalea caucasica

authorship: (Pall.) Kuntze

Rhododendron caucaseum

authorship: Sims

codes: NCS TCS TUR

North Caucasus

code: NCS

region: Caucasus

Transcaucasus

code: TCS

Türkiye

code: TUR

region: Western Asia

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 934 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон кавказский

names: Մրտավարդ կովկասյան

names:
დეკა
დეკა (მცენარე)

value: Jun-Aug

label: Fruit type

value: capsule

source: Wikidata

reason: Only 17 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-championiae

scientific: Rhododendron championiae

authorship: Hook.

epithet: championiae

Azalea championae

authorship: (Hook.) Kuntze

name: Rhododendron championiae var. championiae

name: Rhododendron championiae var. ovatifolium

China Southeast

code: CHS

names: 小叶杜鹃 刺毛杜鹃


slug: rhododendron-chapmanii

scientific: Rhododendron chapmanii

authorship: (Alph.Wood) A.Gray

epithet: chapmanii

published_in: Proc. Amer. Acad. Arts 12: 61 (1877)

preferred: Chapman's rhododendron

source: usda

Azalea chapmannii

authorship: (Alph.Wood) Kuntze

Rhododendron minus var. chapmanii

authorship: (Alph.Wood) Gandhi & Zarucchi

authorship: (A.Gray) W.H.Duncan & Pullen

authors: (Alph.Wood) A.Gray

published_in: Proc. Amer. Acad. Arts 12: 61

USDA PLANTS Database

note: common name, checklist symbol RHCH5

license: public domain

reason: Kew's World Checklist of Vascular Plants does not cover this taxon.


slug: rhododendron-chilanshanense

scientific: Rhododendron chilanshanense

authorship: Kurash.

epithet: chilanshanense

published_in: Edinburgh J. Bot. 56: 75 (1999)

Taiwan

code: TAI

names: 棲兰山杜鹃 棲蘭山杜鵑

authors: Kurash.

published_in: Edinburgh J. Bot. 56(1): 75

reason: Only 9 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-cinnabarinum

scientific: Rhododendron cinnabarinum

epithet: cinnabarinum

published_in: Rhododendr. Sikkim-Himalaya 1: t. 8 (1849)

Azalea roylei

authorship: (Hook.f.) Kuntze

Rhododendron basfordii

authorship: Davidian

name: Rhododendron cinnabarinum var. breviforme

name: Rhododendron cinnabarinum var. cinnabarinum

name: Rhododendron cinnabarinum var. purpurellum

authorship: Cowan

Rhododendron cinnabarinum var. roylei

authorship: (Hook.f.) Hutch.

Rhododendron concatenans

authorship: Hutch.

Rhododendron thibaudiense

authorship: Dombrain

licences: CC-BY CC-BY-SA

China South-Central

code: CHC

Tibet

code: CHT

East Himalaya

code: EHM

Myanmar

code: MYA

Nepal

code: NEP

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 35 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон киноварно-красный

partners:
Chrysomyxa ledi var. rhododendri
Oidium ericinum

published_in: Rhododendr. Sikkim-Himalaya t. 8

reason: Only 8 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-columbianum

scientific: Rhododendron columbianum

authorship: (Piper) Harmaja

epithet: columbianum

preferred: Western Labrador Tea

english:
Western Labrador Tea
western Labrador tea

Ledum californicum

authorship: Kellogg

Ledum columbianum

authorship: Piper

Ledum glandulosum

authorship: Nutt.

Ledum glandulosum var. californicum

authorship: (Kellogg) C.L.Hitchc.

Ledum groenlandicum subsp. glandulosum

authorship: (Nutt.) Á.Löve & D.Löve

Rhododendron neoglandulosum

authorship: Harmaja

codes: ABT BRC CAL COL IDA MNT NEV ORE UTA WAS WYO

Alberta

code: ABT

region: Western Canada

British Columbia

code: BRC

California

code: CAL

region: Southwestern U.S.A.

Colorado

code: COL

region: Northwestern U.S.A.

Idaho

code: IDA

Montana

code: MNT

Nevada

code: NEV

Oregon

code: ORE

Utah

code: UTA

Washington

code: WAS

Wyoming

code: WYO

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2034 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Columbia rhododendron
Columbian Labrador-tea

partners:
Tharsalea mariposa
Bombus bifarius
Bombus centralis
Bombus flavidus
Bombus flavifrons
Bombus insularis
Bombus melanopygus
Bombus mixtus

label: Foliage colour

value: yellow-green

name: GIFT (Global Inventory of Floras and Traits)

name: Traits mined from USDA NRCS plant guides

name: Kew, World Checklist of Vascular Plants (WCVP v16)


slug: rhododendron-crassifolium

scientific: Rhododendron crassifolium

authorship: Stapf

epithet: crassifolium

published_in: Trans. Linn. Soc. London, Bot. 4: 195 (1894)

Rhododendron crassinervium

authorship: Ridl.

Rhododendron murudense

authorship: Merr.

Rhododendron pseudomurudense

authorship: Sleumer

Borneo

code: BOR

lifeform: hemiepiphytic shrub

climate: wet tropical

authors: Stapf

published_in: Trans. Linn. Soc. London, Bot. 4(2): 195


slug: rhododendron-cumberlandense

scientific: Rhododendron cumberlandense

epithet: cumberlandense

preferred: Cumberland rhododendron

Azalea cumberlandensis

authorship: (E.L.Braun) H.F.Copel.

codes: ALA GEO KTY NCA TEN VRG

Alabama

code: ALA

region: Southeastern U.S.A.

Georgia

code: GEO

Kentucky

code: KTY

North Carolina

code: NCA

Tennessee

code: TEN

Virginia

code: VRG

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 36 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Cumberland rhododendron
Cumberland azalea

label: Woodiness


slug: rhododendron-dauricum

scientific: Rhododendron dauricum

authorship: L.

epithet: dauricum

Azalea atrovirens

authorship: (Franch.) Kuntze

Azalea daurica

authorship: (L.) Kuntze

Rhododendron atrovirens

authorship: (Ker Gawl.) Tagg

Rhododendron dahuricum

authorship: L. ex Dippel

Rhododendron dauricum subsp. ledebourii

authorship: (Pojark.) M.S.Alexandrova & P.A.Schmidt

Rhododendron dauricum var. album

authorship: DC.

Rhododendron dauricum var. atrovirens

authorship: Ker Gawl.

Rhododendron ledebourii

authorship: Pojark.

codes: ALT AMU BRY CTA CHI IRK JAP KHA KOR KRA CHM MON PRM TVA WSB YAK

Altay

code: ALT

region: Siberia

Amur

code: AMU

region: Russian Far East

Buryatiya

code: BRY

Chita

code: CTA

Inner Mongolia

code: CHI

region: China

Irkutsk

code: IRK

Japan

code: JAP

Khabarovsk

code: KHA

Korea

code: KOR

Krasnoyarsk

code: KRA

Manchuria

code: CHM

Mongolia

code: MON

region: Mongolia

Primorye

code: PRM

Tuva

code: TVA

West Siberia

code: WSB

Yakutiya

code: YAK

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1551 of them. Species with fewer than 30 georeferenced observations get no envelope.

Menthol

activities: Allergenic Analgesic Anesthetic Antiacetylcholinesterase Antiaggregant Antiallergic Antiasthmatic Antibacillus

Quercetin

activities: 11B-HSD-Inhibitor 5-Lipoxygenase-Inhibitor ATPase-Inhibitor Aldehyde-Oxidase-Inhibitor Aldose-Reductase-Inhibitor Allelochemic Allergenic Analgesic

Ursolic-acid

activities: Analgesic AntiEBV AntiHIV AntiTGF-beta Antialzheimeran Antiarrhythmic Antiarthritic Antibacterial

Hydroquinone

activities: Allelochemic Allergenic Antibacterial Antihepatomic Antilithic Antimalarial Antimelanomic Antimelasmic

Scopoletin

activities: Aldose-Reductase-Inhibitor Allelochemic Analgesic Anesthetic Antiadrenergic Antiaflatoxin Antiarrhythmic Antiasthmatic

Kaempferol

activities: 11B-HSD-Inhibitor 5-Lipoxygenase-Inhibitor Aldose-Reductase-Inhibitor Antiaflatoxin Antiaggregant Antiallergic Antibacterial Anticancer

Myricetin

activities: Allelochemic AntiHIV Antiallergenic Antibacterial Antifeedant Antigastric Antigingivitic Antigonadotrophic

Camphor

activities: Allelopathic Analgesic Anesthetic Antiacne Antidiarrheic Antidysenteric Antiemetic Antifeedant

Hyperoside

activities: Aldose-Reductase-Inhibitor Analgesic Antiaging Antibacterial Anticancer Anticapillary-Fragility Antidermatitic Antielastase

Umbelliferone

activities: Aldose-Reductase-Inhibitor Allelochemic Antibacterial Antiedemic Antihistaminic Antiinflammatory Antimitotic Antimutagenic

Hyperin

activities: Aldose-Reductase-Inhibitor Antibacterial Antiinflammatory Antiischemic Antioxidant Antiradicular Antitussive Antiviral

Vanillic-acid

activities: Aldose-Reductase-Inhibitor Allelopathic Anthelmintic Antibacterial Anticancer Antifatigue Antiinflammatory Antileukemic

source: Dr. Duke's Phytochemical & Ethnobotanical Database

note: A snapshot of the reported literature 1992-2016, not a current assay. An activity is attributed to the compound in that literature; it is not a claim about the plant.

names:
Dahurian rhododendron
daurian rhododendron

names: 兴安杜鹃 冬青叶

names: Рододендрон даурский

names: Рододендрон даурський

names: Дагуур тэрэлж

partners:
Bombus flavifrons
Bombus mixtus
Bombus sitkensis
Bombus vosnesenskii
Bombylius major
Eristalis tenax
Halictus rubicundus
Osmia lignaria

partners:
Aguriahana pictilis
Callophrys ferrea
Phyllonorycter melacoronis

label: Life form

value: nanophanerophyte


slug: rhododendron-delavayi

scientific: Rhododendron delavayi

authorship: Franch.

epithet: delavayi

published_in: Bull. Soc. Bot. France 33: 231 (1886)

Rhododendron arboreum subsp. delavayi

authorship: (Franch.) D.F.Chamb.

Rhododendron arboreum var. peramoenum

authorship: (Balf.f. & Forrest) D.F.Chamb.

Rhododendron peramoenum

authorship: Balf.f. & Forrest

Rhododendron pilovittatum

authorship: Balf.f. & W.W.Sm.

codes: CHC CHS CHT ASS EHM MYA THA VIE

China South-Central

code: CHC

China Southeast

code: CHS

Tibet

code: CHT

Assam

code: ASS

region: Indian Subcontinent

East Himalaya

code: EHM

Myanmar

code: MYA

Thailand

code: THA

Vietnam

code: VIE

names: 马缨花 马缨杜鹃

type: hasPathogen

label: Pathogens

source: EOL TraitBank / NMNH Botany specimens

value: 7 m

authors: Franch.

published_in: Bull. Soc. Bot. France 33: 231


slug: rhododendron-dilatatum

scientific: Rhododendron dilatatum

authorship: Miq.

epithet: dilatatum

published_in: Ann. Mus. Bot. Lugduno-Batavi 1: 34 (1863)

Azalea dilatata

authorship: (Miq.) Hook.f.

Rhododendron decandrum

authorship: (Makino) Makino

Rhododendron dilatatum f. lasiocarpum

authorship: (H.Hara) T.Yamaz.

Rhododendron dilatatum var. decandrum

authorship: Makino

Rhododendron inobeanum

authorship: Honda

source: Kew, World Checklist of Vascular Plants (WCVP v16)

Japan

code: JAP

region: Eastern Asia

names: Mitsuba-tsutsuji ミツバツツジ

partners:
Caloptilia azaleella
Erannis golda
Phthonosema tendinosaria
Plagodis pulveraria

label: Growth habit

authors: Miq.

published_in: Ann. Mus. Bot. Lugduno-Batavi 1: 34


slug: rhododendron-edgeworthii

scientific: Rhododendron edgeworthii

epithet: edgeworthii

published_in: Rhododendr. Sikkim-Himalaya 2: t. 21 (1851)

Azalea bullata

authorship: (Franch.) Kuntze

Azalea edgeworthii

authorship: (Hook.f.) Kuntze

Rhododendron sciaphilum

authorship: Balf.f. & Kingdon-Ward

codes: CHC CHT EHM MYA

Myanmar

region: Indo-China

lifeform: epiphytic or lithophytic shrub

names: Рододендрон Эджворта

label: Life cycle

published_in: Rhododendr. Sikkim-Himalaya 2. t. 21


slug: rhododendron-ericoides

scientific: Rhododendron ericoides

authorship: H.Low ex Hook.f.

epithet: ericoides

Borneo

code: BOR

region: Malesia

lifeform: epiphyte

source: CHELSA V2.1 climatologies 1981-2010, 30 arcsec

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 38 of them. Species with fewer than 30 georeferenced observations get no envelope.

authors: Low ex Hook.f.

reason: Only 11 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-falconeri

scientific: Rhododendron falconeri

epithet: falconeri

published_in: Rhododendr. Sikkim-Himalaya 1: t. 10 (1849)

Rhododendron eximium

authorship: Nutt.

Rhododendron falconeri subsp. eximium

authorship: (Nutt.) D.F.Chamb.

codes: EHM MYA NEP

Nepal

code: NEP

lifeform: tree

Betulinic-acid

activities: Anthelmintic AntiHIV Antibacterial Anticancer Anticarcinomic Antiedemic Antiinflammatory Antileukemic

source: Wikidata (P1843, CC0) + GBIF vernacular names

partners:
Chrysomyxa ledi var. rhododendri
Ileostylus micranthus

published_in: Rhododendr. Sikkim-Himalaya t. 10

reason: Not published anywhere on this site. Every care claim we could make cheaply would be an unsourced enum, which is what the previous version of this site did and why it was deleted.


slug: rhododendron-farrerae

scientific: Rhododendron farrerae

authorship: Tate ex Sweet

epithet: farrerae

Azalea farrerae

authorship: (Tate ex Sweet) K.Koch

Azalea squamata

authorship: Lindl.

Rhododendron farrerae var. leucotrichum

authorship: Franch.

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 119 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 满山红 丁香杜鵑

names: [[:ja:コバノミツバツツジ コバノミツバツジ

source: Global Biotic Interactions (GloBI)

label: Height

value: deciduous

authors: Tate ex Sweet

published_in: Brit. Fl. Gard. [Sweet] Ser. II. t. 95

reason: Not published. The widely copied list is a copyrighted compilation restricted to noncommercial use, and we will not scrape it. A sourced toxicity dataset is being built from primary literature and is not ready.

reason: Only 14 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-ferrugineum

scientific: Rhododendron ferrugineum

authorship: L.

epithet: ferrugineum

preferred: Alpine Rose

english:
Alpine Rose
Rhododendron
Rusty-leaved Alpenrose
alpenrose
alpine-rose
rusty-leaved alpenrose
snow-rose

source: wikidata

Azalea ferruginea

authorship: (L.) Kuntze

Chamaerhododendron ferrugineum

authorship: (L.) Bubani

Plinthocroma ferrugineum

authorship: (L.) J.Dulac

codes: AUT FRA GER ITA YUG POL SPA SWI

Austria

code: AUT

continent: EUROPE

region: Middle Europe

France

code: FRA

region: Southwestern Europe

Germany

code: GER

Italy

code: ITA

region: Southeastern Europe

NW. Balkan Pen.

code: YUG

Poland

code: POL

Spain

code: SPA

Switzerland

code: SWI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2012 of them. Species with fewer than 30 georeferenced observations get no envelope.

Arbutin

activities: Allelochemic Antibacterial Antiedemic Antimelanogenic Antiseptic Antistreptococcic Antitussive Artemicide

Citric-acid

activities: Allergenic Alpha-Amylase-Inhibitor Antiaphthic Antiatherosclerotic Antibacterial Anticalculic Anticoagulant Antileishmanic

Tannin

activities: Anthelmintic AntiHIV Antibacterial Anticancer Anticariogenic Antidiarrheic Antidysenteric Antihepatotoxic

Alpha-amyrin

activities: Analgesic Antiedemic Antiinflammatory Antinociceptive Antitumor Antiulcer Cytotoxic Gastroprotective

Beta-amyrin

activities: Analgesic Antiedemic Antiinflammatory Antinociceptive Antiulcer Gastroprotective Hepatoprotective Larvicide

Friedelin

activities: Antiinflammatory Diuretic

names:
alpenrose
Alpine Rose

names: rododendro bujo

names: 炎のアルペンローゼ 锈色杜鹃

names: Рододендрон ржавый

names:
Rostblättrige Alpenrose
Rostrote Alpenrose

names:
Laurier-rose des Alpes
Rhododendron ferrugineux

names:
Rododendro ferrugineo
Rododendro rosso

names:
Alpenroos
Gewone alpenroos

names: Alperose (Rhododendron ferrugineum) 'Wietings Select'

names:
Алпска ружа
Горска ружа

label: Pollinated by

partners:
Bombus lucorum
Bombus pascuorum
Andrena lapponica
Apis mellifera
Apoidea
Bombus
Bombus alpinus
Bombus hortorum

partners:
Andrena lapponica
Bombus alpinus
Bombus hortorum
Bombus humilis
Bombus hypnorum
Bombus lucorum
Bombus pascuorum
Bombus pratorum

label: Visited by

partners:
Lagopus muta
Acanthis flammea
Acleris comariana
Acleris laterana
Acleris maccana
Aglais urticae
Alauda arvensis
Alectoris graeca

partners:
Chrysomyxa ledi var. rhododendri
Exobasidium rhododendri
Exobasidium vaccinii

source: EOL TraitBank / ECOCROP (FAO)

value: 1 m

label: Leaf retention

reason: No page on this site has been reviewed by a named botanist. The determination label says so, on every page.

reason: Not published for any species. A USDA hardiness zone is the average annual EXTREME minimum temperature, and we hold the mean daily minimum of the coldest month, which is a different quantity and typically about 16 C warmer. Presenting one as the other would place a plant several zones too warm, so we do not publish a zone at all.


slug: rhododendron-formosanum

scientific: Rhododendron formosanum

authorship: Hemsl.

epithet: formosanum

Taiwan

code: TAI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 577 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 台湾杜鹃 臺灣杜鵑

label: Flower-visited by

value: shrub

source: GIFT

value: 6 m

authors: Hemsl.

published_in: Bull. Misc. Inform. Kew 1895(104): 183

reason: No vernacular name for this taxon in Wikidata (P1843) or iNaturalist. We do not invent one, and we do not present the scientific name as though it were a common name.


slug: rhododendron-fulgens

scientific: Rhododendron fulgens

epithet: fulgens

published_in: Rhododendr. Sikkim-Himalaya 3: t. 25 (1851)

codes: CHT ASS EHM MYA NEP

Tibet

code: CHT

Assam

code: ASS

names: 猩红杜鹃 光亮杜鹃

value: woody

value: 4 m

value: perennial

source: USDA PLANTS, GIFT, Wikidata, EOL TraitBank (via Zenodo) and traits mined from USDA NRCS plant guides

published_in: Rhododendr. Sikkim-Himalaya t. 25

reason: Fewer than 30 georeferenced research-grade observations of this taxon, which is too few to state a percentile range for the conditions it grows in. We would rather show nothing than a range computed from eight points in one county.

reason: Only 1 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-griffithianum

scientific: Rhododendron griffithianum

authorship: Wight

epithet: griffithianum

Azalea griffithiana

authorship: (Wight) Kuntze

name: Rhododendron griffithianum var. aucklandii

authorship: (Hook.f.) Hook.

Rhododendron oblongum

authorship: Griff.

codes: CHT EHM NEP

East Himalaya

code: EHM

names: 不丹杜鹃 长萼杜鹃

value: tree

label: Photosynthetic pathway

authors: Wight

published_in: Icon. Pl. Ind. Orient. 4(1): t. 1203

source: IPNI (International Plant Names Index)


slug: rhododendron-groenlandicum

scientific: Rhododendron groenlandicum

authorship: (Oeder) Kron & Judd

epithet: groenlandicum

preferred: Bog Labrador Tea

english:
Bog Labrador Tea
Rusty Labrador-Tea
common Labrador tea
bog Labrador tea

Ledum groenlandicum

authorship: Oeder

authorship: Retz.

Ledum groenlandicum var. aridiphilum

authorship: D Löve

Ledum latifolium

authorship: Jacq.

Ledum latifolium var. canadense

authorship: (Lodd.) DC.

Ledum pacificum

authorship: Small

Ledum palustre subsp. groenlandicum

authorship: (Oeder) Rosenv.

Ledum palustre var. latifolium

authorship: (Jacq.) Hook.

codes: ASK ABT BRC CNT GNL IDA LAB MAI MAN MAS MIC MIN NBR NWH NWY NFL NWT NSC NUN ONT ORE PEN PEI QUE SAS VER WAS WIS YUK

Alaska

code: ASK

region: Subarctic America

Alberta

code: ABT

British Columbia

code: BRC

Connecticut

code: CNT

region: Northeastern U.S.A.

Greenland

code: GNL

Idaho

code: IDA

Labrador

code: LAB

region: Eastern Canada

Maine

code: MAI

Manitoba

code: MAN

Massachusetts

code: MAS

Michigan

code: MIC

Minnesota

code: MIN

region: North-Central U.S.A.

New Brunswick

code: NBR

New Hampshire

code: NWH

New York

code: NWY

Newfoundland

code: NFL

Northwest Territories

code: NWT

Nova Scotia

code: NSC

Nunavut

code: NUN

Ontario

code: ONT

Oregon

code: ORE

Pennsylvania

code: PEN

Prince Edward I.

code: PEI

Québec

code: QUE

Saskatchewan

code: SAS

Vermont

code: VER

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2014 of them. Species with fewer than 30 georeferenced observations get no envelope.

source: Kew World Checklist of Useful Plant Species

names: Рододендрон гренландский

names: グリーンランドモス ラブラドルティ

partners:
Aedes nigripes
Andrena alleghaniensis
Andrena carlini
Andrena carolina
Andrena mandibularis
Andrena regularis
Andrena vicina
Bombus impatiens

partners:
Andrena vicina
Bombus impatiens
Bombus sandersoni
Bombus ternarius
Bombus terricola
Eristalis dimidiata
Aglais milberti
Andrena alleghaniensis

partners:
Apis mellifera
Araeopidius monachus
Bombus melanopygus
Bombus mixtus
Bombus sylvicola
Eristalis
Parhelophilus porcus
Plateumaris

partners:
Bombus ternarius
Microtus pennsylvanicus
Scleroracus vaccinii
Archips argyrospila
Bombus impatiens
Bombus melanopygus
Bombus rufocinctus
Bombus sitkensis


slug: rhododendron-hirsutum

scientific: Rhododendron hirsutum

authorship: L.

epithet: hirsutum

preferred: Hairy Alpenrose

Azalea hirsuta

authorship: (L.) Kuntze

Rhododendron angustifolium

authorship: Hoppe

Rhododendron intermedium

authorship: Schur

codes: AUT FRA GER ITA YUG SWI

Austria

code: AUT

France

code: FRA

Germany

code: GER

Italy

code: ITA

NW. Balkan Pen.

code: YUG

Switzerland

code: SWI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2006 of them. Species with fewer than 30 georeferenced observations get no envelope.

label: Least Concern

source: IUCN Red List category via Wikidata (P141)

names:
Hairy Alpenrose
Hairy Alpine Rose

names: 奥地利杜鹃 緣毛杜鵑

names:
Рододендрон жёстковолосистый
Рододендрон мохнатый

names:
Bewimperte Alpenrose
Almrausch

names:
Rhododendron cilie
Rhododendron cilié

names:
Rododendro irsuto
Rododendro peloso

names:
Gewimperd Alpenroosje
Harig alpenroosje

partners:
Bombus
Andrena lapponica
Apis mellifera
Bombus alpinus
Bombus hortorum
Bombus humilis
Bombus hypnorum
Bombus jonellus

partners:
Bombus
Bombus pascuorum
Bombus pratorum
Andrena lapponica
Apis mellifera
Bombus alpinus
Bombus hortorum
Bombus humilis

label: Eaten by

partners:
Acanthis flammea
Acleris comariana
Acleris laterana
Acleris maccana
Alauda arvensis
Alectoris graeca
Alydus rupestris
Anas platyrhynchos

label: Parasites

value: chamaephyte

value: evergreen


slug: rhododendron-hongkongense

scientific: Rhododendron hongkongense

authorship: Hutch.

epithet: hongkongense

published_in: Spec. Rhododendron : 562 (1930)

Azalea myrtifolia

authorship: Champ.

China Southeast

code: CHS

climate: subtropical

names: 白马银花 香港杜鵑

value: 2 m

authors: Hutch.

reason: No dated flowering annotations found for this taxon.


slug: rhododendron-hyperythrum

scientific: Rhododendron hyperythrum

authorship: Hayata

epithet: hyperythrum

published_in: Icon. Pl. Formosan. 3: 133 (1913)

Taiwan

code: TAI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 113 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 南湖杜鵑 小西氏杜鵑

published_in: Icon. Pl. Formosan. 3: 133

reason: Only 4 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-indicum

scientific: Rhododendron indicum

authorship: (L.) Sweet

epithet: indicum

Azalea balsaminiflora

authorship: Carrière

Azalea burgeri

authorship: Miq.

Azalea calycina

authorship: Lem.

Azalea crispiflora

authorship: Hook.

Azalea danielsiana

authorship: Paxton

Azalea decumbens

authorship: (D.Don ex G.Don) DC.

Azalea lateritia

authorship: (Lindl.) Lavallée

Azalea macrantha

authorship: Bunge

Azalea obtusa

authorship: Lindl.

Azalea rosiflora

authorship: Dean

Enkianthus biflorus

authorship: Lour.

Iposues obovata

authorship: Raf.

Loiseleria indica

authorship: (L.) Rchb.

Rhododendron austrokiusianum

authorship: Hatus.

Rhododendron crispiflorum

authorship: Planch.

Rhododendron decumbens

authorship: D.Don ex G.Don

Rhododendron hannoense

authorship: Nakai

Rhododendron kiusianum var. sataense

authorship: (Nakai) D.F.Chamb. & Rae

Rhododendron lateritium

authorship: (Lindl.) Planch.

Rhododendron macranthum

authorship: (Bunge) G.Don

Japan

code: JAP

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 131 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 皋月杜鹃 西鹃

names: Рододендрон Симса

names: satsuki サツキ

names: Rhododendron des Indes, Rhododendron de Chine, Azalée des Indes, Azalée de Formose, Azalée chinoise

names:
indisk azalea
satsukiazalea

names:
india asalea
india rodo

partners:
Bombus griseocollis
Anthophora villosula
Bombus bimaculatus
Bombus ignitus
Bombus impatiens
Bombus pascuorum
Bombus terrestris
Byasa alcinous

partners:
Bombus pensylvanicus
Macaria aemulataria
Xylocopa virginica

partners:
Naratettix rubrovittatus
Acleris platynotana
Acytolepis puspa
Aguriahana pictilis
Angerona nigrisparsa
Bombus bimaculatus
Caloptilia azaleella
Caloptilia zachrysa

value: phanerophyte

authors: (L.) Sweet

published_in: Sweet's Hort. Brit., ed. 2. 343


slug: rhododendron-japonoheptamerum

scientific: Rhododendron japonoheptamerum

authorship: Kitam.

epithet: japonoheptamerum

published_in: Acta Phytotax. Geobot. 38: 382 (1987)

preferred: Japanese azalea

Azalea japonica

authorship: (Blume) Kuntze

Hymenanthes japonica

authorship: Blume

name: Rhododendron degronianum subsp. heptamerum

authorship: (Maxim.) H.Hara

name: Rhododendron degronianum var. heptamerum

authorship: (Maxim.) Sealy ex Davidian

Rhododendron degronianum var. hondoense

authorship: (Nakai) H.Hara

name: Rhododendron degronianum var. kyomaruense

authorship: (T.Yamaz) H.Hara

Rhododendron hymenanthes

authorship: Makino

Rhododendron japonicum

authorship: (Blume) C.K.Schneid.

Rhododendron metternichii

authorship: Siebold & Zucc.

Rhododendron metternichii f. latifolium

authorship: Sugim.

name: Rhododendron metternichii var. heptamerum

authorship: Maxim.

name: Rhododendron metternichii var. hondoense

name: Rhododendron metternichii var. kyomaruense

name: Rhododendron yakushimanum var. kyomaruense

authorship: (T.Yamaz) T.Yamaz

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 66 of them. Species with fewer than 30 georeferenced observations get no envelope.

partners:
Habropoda laboriosa
Xylocopa micans

source: USDA PLANTS

authors: Kitam.

published_in: Acta Phytotax. Geobot. 38: 382, nom. nov

USDA PLANTS Database

note: common name, checklist symbol RHJA2

reason: Only 3 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-kaempferi

scientific: Rhododendron kaempferi

authorship: Planch.

epithet: kaempferi

published_in: Fl. Serres Jard. Eur. 9: 77 (1853)

Rhododendron iyoense

authorship: Nakai

Rhododendron macrogemmum

authorship: (Nakai) Nakai

Rhododendron sieboldii

authorship: Miq.

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 101 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон Кемпфера

names: ヤマツツジ ヤマツツジ(広義)

partners:
Bombus ardens
Lasioglossum exiliceps
Philopota nigroaenea

authors: Planch.

published_in: Fl. Serres Jard. Eur. ix. (1853-54) 77

reason: Only 20 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-kawakamii

scientific: Rhododendron kawakamii

authorship: Hayata

epithet: kawakamii

published_in: J. Coll. Sci. Imp. Univ. Tokyo 30(1): 171 (1911)

Rhododendron kawakamii var. flaviflorum

authorship: Liu & Chuang

lifeform: epiphytic subshrub or shrub

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 51 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 着生杜鹃 著生杜鵑

published_in: J. Coll. Sci. Imp. Univ. Tokyo 30(Art. 1):  171

reason: Only 17 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-kesangiae

scientific: Rhododendron kesangiae

authorship: D.G.Long & Rushforth

epithet: kesangiae

published_in: Notes Roy. Bot. Gard. Edinburgh 45: 331 (1988 publ. 1989)

East Himalaya

code: EHM

authors: D.G.Long & Rushforth

published_in: Notes Roy. Bot. Gard. Edinburgh 45(2): 331


slug: rhododendron-keysii

scientific: Rhododendron keysii

authorship: Nutt.

epithet: keysii

published_in: Hooker's J. Bot. Kew Gard. Misc. 5: 353 (1853)

Azalea keysii

authorship: (Nutt.) Kuntze

Rhododendron keysii var. unicolor

authorship: Hutch.

codes: CHT EHM

Tibet

code: CHT

authors: Nutt.

published_in: Hooker's J. Bot. Kew Gard. Misc. 5: 353

reason: Only 7 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-kiyosumense

scientific: Rhododendron kiyosumense

authorship: (Makino) Makino

epithet: kiyosumense

Rhododendron kiyosumense f. glabrescens

authorship: Minamit.

Rhododendron shimidzuanum

authorship: Honda ex Makino

names: Kiyosumi-mitsubatsutsuji キヨスミミツバツツジ

authors: (Makino) Makino

published_in: Makino & Nemoto, Fl. Jap. ed. 2 880 (1931)


slug: rhododendron-kotschyi

scientific: Rhododendron kotschyi

authorship: Simonk.

epithet: kotschyi

published_in: Enum. Fl. Transsilv. 389 (1887)

name: Rhododendron ferrugineum subsp. kotschyi

authorship: (Simonk.) Hayek

Rhododendron myrtifolium

authorship: Schott & Klotzsch ex Schott & Klotzsch

authorship: Schott & Kotschy

codes: BUL YUG ROM UKR

Bulgaria

code: BUL

Romania

code: ROM

Ukraine

code: UKR

region: Eastern Europe

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 256 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Рододендрон Кочи
Рододендрон карпатский

names:
Рододендрон Кочі
Рододендрон карпатський

label: Flowering months

value: Jun-Aug

authors: Simonk.

published_in: Enum. Fl. Transsilv. 389

reason: Only 18 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-lapponicum

scientific: Rhododendron lapponicum

authorship: (L.) Wahlenb.

epithet: lapponicum

published_in: Fl. Lapp. (Wahlenberg) 104 (1812)

preferred: Lapland rosebay

Azalea ferruginosa

authorship: Pall.

Azalea lapponica

authorship: L.

Azalea pallida

authorship: Turcz.

Azalea parvifolia

authorship: (Adams) Kuntze

Osmothamnus pallidus

authorship: (Turcz.) DC.

Rhododendron lapponicum subsp. alpinum

authorship: (Glehn) A.P.Khokhr.

name: Rhododendron lapponicum subsp. parvifolium

authorship: (Adams) T.Yamaz.

Rhododendron lapponicum var. alpinum

authorship: (Glehn) T.Yamaz.

Rhododendron lapponicum var. roseum

authorship: Abrom.

Rhododendron lapponicum var. viride

authorship: Berlin

Rhododendron micranthum

authorship: Maxim.

Rhododendron pallidum

authorship: (Turcz.) Dümmer

Rhododendron parvifolium

authorship: Adams

Rhododendron parvifolium f. alpinum

authorship: Glehn

name: Rhododendron parvifolium subsp. confertissimum

authorship: (Nakai) A.P.Khokhr.

codes: AMU BRY CTA CHI IRK JAP KAM KHA KOR MAG CHM MON PRM SAK TVA YAK FIN NOR SWE ASK ABT BRC GNL LAB MAI MAN NWH NWY NFL NWT NSC NUN ONT QUE VER WIS YUK

Amur

code: AMU

Buryatiya

code: BRY

Chita

code: CTA

Inner Mongolia

code: CHI

Irkutsk

code: IRK

Kamchatka

code: KAM

Khabarovsk

code: KHA

Korea

code: KOR

Magadan

code: MAG

Manchuria

code: CHM

Mongolia

code: MON

Primorye

code: PRM

Sakhalin

code: SAK

Tuva

code: TVA

Yakutiya

code: YAK

Finland

code: FIN

region: Northern Europe

Norway

code: NOR

Sweden

code: SWE

Alaska

code: ASK

Alberta

code: ABT

region: Western Canada

British Columbia

code: BRC

Greenland

code: GNL

names: рододендрон лапландский

names:
Rhododendron lapon
rhododendron de Laponie

names: Жижиг навчит тэрэлж

partners:
Culicoides
Drymeia groenlandica
Drymeia segnis
Olethreutes inquietana
Parasyrphus tarsatus
Polia richardsoni
Scatopsciara
Spilogona sanctipauli

partners:
Culicoides
Limnophilus
Scatopsciara
Smittia
Aclastus
Arpedium
Bellardia puberula
Bombus

partners:
Alcis repandata
Colladonus torneella
Cornicacoecia lafauryana
Entephria caesiata
Eupithecia gelidata
Lasiocampa quercus
Lycia lapponaria
Odontopera bidentata


slug: rhododendron-latoucheae

scientific: Rhododendron latoucheae

authorship: Franch.

epithet: latoucheae

published_in: Bull. Soc. Bot. France 46: 210 (1899)

Azalea elliptica

authorship: (Maxim.) Kuntze

Rhododendron amamiense

authorship: Ohwi

name: Rhododendron ellipticum var. leptosanthum

authorship: (Hayata) S.S.Ying

Rhododendron latoucheae var. amamiense

authorship: (Ohwi) T.Yamaz.

Rhododendron latoucheae var. ionanthum

authorship: (W.P.Fang) G.Z.Li

Rhododendron leiopodum

authorship: Hayata

Rhododendron wilsoniae

authorship: Hemsl. & E.H.Wilson

codes: CHC CHS NNS TAI

China South-Central

code: CHC

China Southeast

code: CHS

Nansei-shoto

code: NNS

Taiwan

code: TAI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 822 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 云锦杜鹃 西施花

names: seishika セイシカ

value: 3 m

published_in: Bull. Soc. Bot. France 46: 210


slug: rhododendron-lepidotum

scientific: Rhododendron lepidotum

authorship: Wall. ex G.Don

epithet: lepidotum

Azalea lepidota

authorship: (Wall. ex G.Don) Kuntze

Rhododendron cremnastes

authorship: Balf.f. & Farrer

Rhododendron lepidotum subsp. obovatum

authorship: (Hook.f.) Pradhan & Lachungpa

Rhododendron lepidotum var. album

authorship: Davidian

codes: CHC CHT ASS EHM MYA NEP PAK WHM

Tibet

code: CHT

Assam

code: ASS

East Himalaya

code: EHM

Myanmar

code: MYA

Nepal

code: NEP

Pakistan

code: PAK

West Himalaya

code: WHM

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 136 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Scaly rhododendron
willow-leaved rhododendron

names: Рододендрон чешуйчатый

names: भाले सुनपाति

authors: Wall. ex G.Don

published_in: Gen. Hist. 3: 845


slug: rhododendron-luteum

scientific: Rhododendron luteum

authorship: Sweet

epithet: luteum

Anthodendron flavum

authorship: (Hoffmanns.) Rchb.

Anthodendron ponticum

authorship: (L.) Rchb.

Azalea flava

authorship: Hoffmanns.

Azalea fulva

authorship: Michx. ex Lam.

Azalea nudiflora var. mixta

authorship: DC.

Azalea pontica

authorship: L.

Rhododendron flavum

authorship: (Hoffmanns.) G.Don

Rhododendron flavum var. macranthum

authorship: Bean

Rhododendron indicum var. luteum

authorship: (Sweet) G.Don

Rhododendron luteum var. macranthum

authorship: (Bean) Rehder

Rhododendron ponticum

authorship: (L.) Schreb. ex DC.

codes: EAI NCS TCS TUR AUT BLR YUG POL UKR

East Aegean Is.

code: EAI

region: Western Asia

North Caucasus

code: NCS

region: Caucasus

Transcaucasus

code: TCS

Türkiye

code: TUR

Austria

code: AUT

Belarus

code: BLR

NW. Balkan Pen.

code: YUG

Poland

code: POL

Ukraine

code: UKR

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1397 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Yellow Azalea
Yellow Rhodea

names: 深黄杜鹃 黃香杜鹃

names:
Gelbe Alpenrose
Gelbe Azalee

names: Рододендрон жовтий

names:
rhododendron felen
Rhododendron Melyn

partners:
Erysiphe azaleae
Oidium ericinum

value: May-Jun

label: Fruit type


slug: rhododendron-macrophyllum

scientific: Rhododendron macrophyllum

authorship: D.Don ex G.Don

epithet: macrophyllum

preferred: Pacific rhododendron

Azalea californica

authorship: (Hook.) Kuntze

Azalea macrophylla

authorship: (D.Don ex G.Don) Kuntze

Hymenanthes californica

authorship: (Hook.) H.F.Copel.

Hymenanthes macrophylla

authorship: (D.Don ex G.Don) H.F.Copel.

Hymenanthes macrophylla f. alba

authorship: (Rehder) H.F.Copel.

Rhododendron californicum

authorship: Hook.

name: Rhododendron californicum var. washingtonianum

authorship: Zabel ex Rehder

Rhododendron macrophyllum f. album

authorship: Rehder

Rhododendron washingtonianum

authorship: Millais

codes: BRC CAL ORE WAS

British Columbia

code: BRC

California

code: CAL

region: Southwestern U.S.A.

Oregon

code: ORE

region: Northwestern U.S.A.

Washington

code: WAS

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1993 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Pacific rhododendron
California Rose-bay

names: Рододендрон крупнолистный

names:
suurelehine rodo
suurelehine rododendron

partners:
Bombus melanopygus
Bombus mixtus
Bombus vosnesenskii
Parnassius clodius
Pidonia scripta
Andrena
Andrena hemileuca
Apoidea

partners:
Camponotus novaeboracensis
Coccomyces dentatus
Eulonchus tristis
Evodinus vancouveri
Misumena vatia
Occidryas editha
Parnassius clodius
Seifertia azaleae

source: EOL TraitBank / Fire Effects Information System (USDA)

source: EOL TraitBank / USDA PLANTS

label: Growth form

value: Multiple Stem

label: Growth rate

value: moderate

label: Foliage colour

value: dark green


slug: rhododendron-maddenii

scientific: Rhododendron maddenii

epithet: maddenii

published_in: Rhododendr. Sikkim-Himalaya 2: t. 18 (1851)

Azalea crassa

authorship: (Franch.) Kuntze

Azalea maddenii

authorship: (Hook.f.) Kuntze

Rhododendron brevitubum

authorship: Balf.f. & R.E.Cooper

Rhododendron calophyllum

authorship: Nutt.

Rhododendron chapaense

authorship: Dop

Rhododendron crassum

authorship: Franch.

Rhododendron macranthum

authorship: Griff.

Rhododendron manipurense

authorship: Balf.f. & Watt

Rhododendron odoriferum

authorship: Hutch.

codes: CHC CHT ASS EHM LAO MYA THA VIE

China South-Central

code: CHC

region: China

Tibet

code: CHT

Assam

code: ASS

region: Indian Subcontinent

East Himalaya

code: EHM

Laos

code: LAO

Myanmar

code: MYA

Thailand

code: THA

Vietnam

code: VIE

label: Woodiness

published_in: Rhododendr. Sikkim-Himalaya 2: 19, t. 18


slug: rhododendron-malayanum

scientific: Rhododendron malayanum

authorship: Jack

epithet: malayanum

Azalea celebica

authorship: Blume ex DC.

Azalea malayana

authorship: (Jack) Kuntze

Rhododendron malayanum f. ovatum

authorship: Sleumer

Rhododendron malayanum var. axillare

authorship: J.J.Sm. ex Sleumer

name: Rhododendron malayanum var. infrapilosum

Rhododendron tubiflorum

authorship: (Blume) DC.

Vireya tubiflora

authorship: Blume

codes: BOR JAW MLY MOL SUL SUM THA

Borneo

code: BOR

region: Malesia

Jawa

code: JAW

Malaya

code: MLY

Maluku

code: MOL

Sulawesi

code: SUL

Sumatera

code: SUM

Thailand

region: Indo-China

label: Growth habit

authors: Jack

published_in: Malayan Misc. 2(7): 17

reason: Only 9 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-mariesii

scientific: Rhododendron mariesii

authorship: Hemsl. & E.H.Wilson

epithet: mariesii

published_in: Bull. Misc. Inform. Kew 1907: 44 (1907)

Azalea mariesii

authorship: (Hemsl. & E.H.Wilson) H.F.Copel.

Rhododendron farrerae var. mediocre

authorship: Diels

Rhododendron gnaphalocarpum

authorship: Hayata

codes: CHN CHC CHS TAI

China North-Central

code: CHN

China Southeast

code: CHS

Taiwan

code: TAI

region: Eastern Asia

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 178 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 满山红 守城滿山紅

value: deciduous

label: Life cycle

name: GIFT (Global Inventory of Floras and Traits)

authors: Hemsl. & E.H.Wilson

published_in: Bull. Misc. Inform. Kew 1907(2): 44


slug: rhododendron-maximum

scientific: Rhododendron maximum

authorship: L.

epithet: maximum

preferred: great rhododendron

english:
great rhododendron
great laurel

source: inat

Hymenanthes maxima

authorship: (L.) H.F.Copel.

Rhododendron ashleyi

authorship: Coker

Rhododendron bigener

authorship: Steud.

Rhododendron fragrans

authorship: DC.

Rhododendron latifolium

authorship: Hoffmanns.

Rhododendron maximum f. album

authorship: (Pursh) Fernald

Rhododendron maximum f. apetalum

authorship: V.V.Byalt & Firsov

Rhododendron maximum var. album

authorship: Pursh

Rhododendron procerum

authorship: Salisb.

Rhododendron purpureum

authorship: (Pursh) G.Don

codes: ALA CNT DEL GEO KTY MAI MRY MAS NWH NWJ NWY NCA OHI PEN RHO SCA TEN VER VRG WVA

Alabama

code: ALA

region: Southeastern U.S.A.

Connecticut

code: CNT

Delaware

code: DEL

Georgia

code: GEO

Kentucky

code: KTY

Maine

code: MAI

Maryland

code: MRY

Massachusetts

code: MAS

New Hampshire

code: NWH

New Jersey

code: NWJ

New York

code: NWY

North Carolina

code: NCA

Ohio

code: OHI

Pennsylvania

code: PEN

Rhode I.

code: RHO

South Carolina

code: SCA

Tennessee

code: TEN

Vermont

code: VER

Virginia

code: VRG

West Virginia

code: WVA

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1973 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
great laurel
American Rhododendron

names:
Rhododendron
rhododendron géant

partners:
Apis mellifera
Bombus bimaculatus
Bombus impatiens
Bombus perplexus
Bombus pratorum
Bombus terricola
Epargyreus clarus
Gaurotes cyanipennis

partners:
Anageshna primordialis
Graphocephala fennahi
Kleidocerys resedae
Leiobunum verrucosum
Lon hobomok
Nigronia serricornis
Papilio canadensis
Ptenothrix renateae

partners:
Graphocephala fennahi
Oligonychus ilicis
Pentamerismus erythreus

name: Traits mined from USDA NRCS plant guides


slug: rhododendron-menziesii

scientific: Rhododendron menziesii

authorship: Craven

epithet: menziesii

preferred: rusty menziesia

source: usda

Menziesia ferruginea

authorship: Sm.

Menziesia ferruginea subsp. glabella

authorship: (A.Gray) Calder & Roy L.Taylor

Menziesia ferruginea var. glabella

authorship: (A.Gray) M.Peck

Menziesia urceolaris

authorship: (Sm.) Salisb.

Rhododendron menziesii subsp. glabellum

authorship: (A.Gray) Craven

codes: ASK ABT BRC CAL IDA MNT ORE WAS WYO YUK

Alaska

code: ASK

region: Subarctic America

Alberta

code: ABT

British Columbia

code: BRC

California

code: CAL

Idaho

code: IDA

Montana

code: MNT

Oregon

code: ORE

Washington

code: WAS

Wyoming

code: WYO

Yukon

code: YUK

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2000 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Pacific menziesia
false azalea

names: 假越橘莓 孟杜鵑

names: Рододендрон Мензиса

partners:
Bombus vancouverensis nearcticus
Bombus melanopygus
Bombus sitkensis

partners:
Dolichovespula arenaria
Exobasidium
Rhytisma arbuti

value: shrub

authors: Craven

USDA PLANTS Database

note: common name, checklist symbol MEFE

name: Kew, World Checklist of Vascular Plants (WCVP v16)


slug: rhododendron-micranthum

scientific: Rhododendron micranthum

authorship: Turcz.

epithet: micranthum

published_in: Bull. Soc. Imp. Naturalistes Moscou 21(I): 586 (1848)

Azalea micrantha

authorship: (Turcz.) Kuntze

Rhododendron pritzelianum

authorship: Diels

codes: CHN CHC CHS CHI KOR CHM

China North-Central

code: CHN

China South-Central

code: CHC

China Southeast

code: CHS

Inner Mongolia

code: CHI

Korea

code: KOR

Manchuria

code: CHM

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 145 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 冬青叶 照山白

authors: Turcz.

published_in: Bull. Soc. Imp. Naturalistes Moscou 21(1): 586


slug: rhododendron-minus

scientific: Rhododendron minus

authorship: Michx.

epithet: minus

preferred: piedmont rhododendron

Azalea minor

authorship: (Michx.) Kuntze

Rhododendron carolinianum

authorship: Rehder

name: Rhododendron carolinianum var. margarettae

authorship: Ashe

Rhododendron cuthbertii

authorship: Small

Rhododendron margarettae

authorship: (Ashe) Ashe

Rhododendron minus var. majus

authorship: (G.Don) D.H.Voss

Rhododendron punctatum

authorship: Andrews

codes: ALA FLA GEO NCA SCA TEN

Alabama

code: ALA

Florida

code: FLA

Georgia

code: GEO

North Carolina

code: NCA

South Carolina

code: SCA

Tennessee

code: TEN

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 309 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
piedmont rhododendron
Carolina rhododendron

names: Рододендрон малый

partners: Lepidoptera Trochilidae

authors: Michx.

published_in: Fl. Bor.-Amer. (Michaux) 1: 258


slug: rhododendron-molle

scientific: Rhododendron molle

authorship: (Blume) G.Don

epithet: molle

Azalea macrostemon

authorship: (Maxim.) Kuntze

Azalea mollis

authorship: Blume

Rhododendron davisii

authorship: Koehne

Rhododendron japonicum

authorship: (A.Gray) Suringar

Rhododendron japonicum f. canescens

authorship: Sugim.

Rhododendron japonicum f. multifidum

authorship: Nakai

name: Rhododendron japonicum var. glaucophyllum

Rhododendron macrostemon

authorship: Maxim.

Rhododendron molle f. canescens

authorship: (Sugim.) Yonek.

Rhododendron molle f. flavum

authorship: (Miyoshi) Yonek.

Rhododendron molle f. glaucophyllum

authorship: (Nakai) Yonek.

Rhododendron sinense

authorship: Sweet

Rhododendron sinense f. flavum

authorship: Miyoshi

codes: CHC CHS JAP

Japan

code: JAP

Andromedotoxin

activities: Cardiodepressant Convulsant Emetic Hypotensive Respirodepressant Sialogogue

Rhomitoxin

activities: Antihypertensive Antitachycardic Hypotensive Tranquilizer

Ericolin

activities: Antiseptic Diuretic Pesticide

source: Dr. Duke's Phytochemical & Ethnobotanical Database

names: 羊踯躅 闹羊花

names: Рододендрон мягкий

names:
Chinese Azalea
Donzige Rododendron

names:
Japanazalea
kinesisk azalea

label: Height

value: capsule

source: Wikidata

published_in: Gen. Hist. 3: 846


slug: rhododendron-moulmainense

scientific: Rhododendron moulmainense

authorship: Hook.

epithet: moulmainense

Azalea moulmeinensis

authorship: (Hook.) Kuntze

Rhododendron klossii

authorship: Ridl.

Rhododendron laoticum

authorship: Dop

Rhododendron nematocalyx

authorship: Balf.f. & W.W.Sm.

Rhododendron oxyphyllum

authorship: Franch.

Rhododendron pectinatum

authorship: Hutch.

Rhododendron siamense

authorship: Diels

source: Kew, World Checklist of Vascular Plants (WCVP v16)

codes: CHC ASS CBD EHM LAO MLY MYA THA VIE

Assam

code: ASS

Cambodia

code: CBD

East Himalaya

code: EHM

Laos

code: LAO

Malaya

code: MLY

Myanmar

code: MYA

Thailand

code: THA

Vietnam

code: VIE

source: CHELSA V2.1 climatologies 1981-2010, 30 arcsec

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 30 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 丝线吊芙蓉 毛棉杜鹃

value: woody

authors: Hook.


slug: rhododendron-mucronulatum

scientific: Rhododendron mucronulatum

authorship: Turcz.

epithet: mucronulatum

published_in: Bull. Soc. Imp. Naturalistes Moscou 10(II): 155 (1837)

name: Rhododendron dauricum subsp. mucronulatum

authorship: (Turcz.) Vorosch.

Rhododendron dauricum var. ciliatum

authorship: (Nakai) E.H.Wilson

Rhododendron dauricum var. mucronulatum

authorship: (Turcz.) Maxim.

Rhododendron mucronulatum f. ciliatum

authorship: (Nakai) Kitag.

Rhododendron mucronulatum f. lucifum

authorship: (Nakai) M.Kim

name: Rhododendron mucronulatum var. chejuense

authorship: Davidian

Rhododendron mucronulatum var. taquetii

authorship: (H.Lév.) Nakai

codes: AMU CHN CHS CHI JAP KHA KOR CHM PRM

Amur

code: AMU

region: Russian Far East

China North-Central

code: CHN

China Southeast

code: CHS

Inner Mongolia

code: CHI

Khabarovsk

code: KHA

Korea

code: KOR

Primorye

code: PRM

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 611 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 迎山红 迎红杜鹃

names: Рододендрон остроконечный

source: Wikidata (P1843, CC0) + GBIF vernacular names

partners:
Bombus bimaculatus
Bombus griseocollis
Bombus perplexus
Bombylius major

partners:
Naratettix rubrovittatus
Aguriahana pictilis
Vitroliarus ecologus

source: Global Biotic Interactions (GloBI)

label: Life form

value: nanophanerophyte

value: Jul-Aug

published_in: Bull. Soc. Imp. Naturalistes Moscou 10(7): 155


slug: rhododendron-nivale

scientific: Rhododendron nivale

epithet: nivale

published_in: Rhododendr. Sikkim-Himalaya 3: t. 26 (1851)

Azalea nivalis

authorship: (Hook.f.) Kuntze

Rhododendron alpicola

authorship: Rehder & E.H.Wilson

Rhododendron batangense

authorship: Balf.f. & Forrest

Rhododendron nigropunctatum

authorship: Bureau & Franch.

Rhododendron oresbium

authorship: Balf.f. & Kingdon-Ward

Rhododendron paludosum

authorship: Hutch. & Kingdon-Ward

codes: CHC CHQ CHT EHM NEP WHM

China South-Central

code: CHC

Qinghai

code: CHQ

Tibet

code: CHT

Nepal

code: NEP

West Himalaya

code: WHM

names: 迎山红 雪层杜鹃

value: perennial

published_in: Rhododendr. Sikkim-Himalaya t. 26

reason: Only 6 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-noriakianum

scientific: Rhododendron noriakianum

epithet: noriakianum

published_in: Trans. Nat. Hist. Soc. Formosa 25: 40 (1935)

Taiwan

code: TAI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 171 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 南湖大山杜鵑 志佳陽杜鵑

published_in: Trans. Nat. Hist. Soc. Formosa 25: 40

reason: Not published anywhere on this site. Every care claim we could make cheaply would be an unsourced enum, which is what the previous version of this site did and why it was deleted.


slug: rhododendron-occidentale

scientific: Rhododendron occidentale

authorship: (Torr. & A.Gray) A.Gray

epithet: occidentale

published_in: Bot. California 1: 458 (1876)

preferred: western azalea

Azalea californica

authorship: Torr. & A.Gray ex Durand

Azalea occidentalis

authorship: Torr. & A.Gray

name: Rhododendron occidentale var. californicum

authorship: (Torr. & A.Gray ex Durand) Hrusa

Rhododendron occidentale var. paludosum

authorship: Jeps.

Rhododendron occidentale var. sonomense

authorship: (Greene) Rehder

Rhododendron sonomense

authorship: Greene

codes: CAL ORE

California

code: CAL

Oregon

code: ORE

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1983 of them. Species with fewer than 30 georeferenced observations get no envelope.

species: Rhododendron periclymenoides

slug: rhododendron-periclymenoides

names:
western azalea
California azalea

names: Рододендрон западный

names: lääneasalea läänerodo

label: Pollinated by

partners: Apoidea Lepidoptera

partners:
Bombus vosnesenskii
Bombus terrestris
Danaus plexippus
Papilio eurymedon
Papilio rutulus
Apoidea
Bombus melanopygus
Bombus mixtus

partners:
Anthophora bomboides
Bombus californicus
Coleotechnites huntella
Ochlodes agricola
Papilio eurymedon
Papilio rutulus
Polygonia faunus
Toxomerus occidentalis

partners:
Oidium ericinum
Pnigalio minio

value: green

label: Flower colour

reason: Not published. The widely copied list is a copyrighted compilation restricted to noncommercial use, and we will not scrape it. A sourced toxicity dataset is being built from primary literature and is not ready.


slug: rhododendron-oldhamii

scientific: Rhododendron oldhamii

authorship: Maxim.

epithet: oldhamii

published_in: Mém. Acad. Imp. Sci. Saint Pétersbourg, Sér. 7, 16(9): 34 (1871)

Azalea oldhamii

authorship: (Maxim.) Kuntze

Rhododendron oldhamii var. glandulosum

authorship: Hayata

Rhododendron ovatosepalum

authorship: Yamam.

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 959 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 砖红杜鹃 金毛杜鵑

authors: Maxim.

published_in: Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 7. xvi. (1871) n. IX. 34


slug: rhododendron-ovatum

scientific: Rhododendron ovatum

authorship: (Lindl.) Maxim. ex Planch.

epithet: ovatum

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 15: 230 (1870)

Azalea ovata

authorship: Lindl.

Rhododendron ovatum var. lamprophyllum

authorship: (Hayata) Y.C.Lui

codes: CHC CHS TAI VIE

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 130 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 马银花 馬銀花

value: 4 m

label: Leaf retention

value: evergreen

authors: (Lindl.) Planch. ex Maxim.

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg 15(2): 230

reason: Only 8 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-pentaphyllum

scientific: Rhododendron pentaphyllum

epithet: pentaphyllum

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 31: 64 (1886)

Azalea pentaphylla

authorship: (Maxim.) H.F.Copel.

Rhododendron nikoense

authorship: (Komastsu) Nakai

Rhododendron pentaphyllum var. nikoense

authorship: Komastsu

name: Rhododendron pentaphyllum var. pentaphyllum

name: Rhododendron pentaphyllum var. shikokianum

Japan

code: JAP

value: tree

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg xxxi. (1887) 64

reason: No page on this site has been reviewed by a named botanist. The determination label says so, on every page.


scientific: Rhododendron periclymenoides

authorship: (Michx.) Shinners

epithet: periclymenoides

preferred: Pinxter Flower

english:
Pinxter Flower
pink azalea

Anthodendron nudiflorum

authorship: Rchb.

Azalea lutea

authorship: L.

Azalea nudiflora f. alba

authorship: Aiton

Azalea nudiflora f. glandifera

authorship: Porter

Azalea nudiflora var. polyandra

authorship: (Pursh) DC.

Azalea periclymena

authorship: Pers.

Azalea periclymenoides

authorship: Michx.

Azalea periclymenoides var. alba

authorship: (Aiton) Pursh

Azalea periclymenoides var. polyandra

authorship: Pursh

Rhododendron nudiflorum

authorship: (L.) Torr.

Rhododendron nudiflorum f. glandiferum

authorship: (Porter) Fernald

Rhododendron periclymenoides f. album

authorship: (Aiton) C.F.Reed

codes: ALA CNT DEL GEO ILL KTY MRY MAS NWJ NWY NCA OHI PEN RHO SCA TEN VER VRG WVA

Alabama

code: ALA

Connecticut

code: CNT

region: Northeastern U.S.A.

Delaware

code: DEL

Georgia

code: GEO

Illinois

code: ILL

Kentucky

code: KTY

Maryland

code: MRY

Massachusetts

code: MAS

New Jersey

code: NWJ

New York

code: NWY

North Carolina

code: NCA

Ohio

code: OHI

Pennsylvania

code: PEN

Rhode I.

code: RHO

South Carolina

code: SCA

Tennessee

code: TEN

Vermont

code: VER

Virginia

code: VRG

West Virginia

code: WVA

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2047 of them. Species with fewer than 30 georeferenced observations get no envelope.

species: Rhododendron occidentale

names: Рододендрон голоцветковый

names:
paljaõieline rodo
paljaõieline rododendron

partners:
Andrena tridens
Andrena cornelli
Andrena persimulata
Anthophora villosula
Bombus bimaculatus
Bombus pensylvanicus
Papilio glaucus
Xylocopa virginica

partners:
Clastoptera obtusa
Hyles lineata
Papilio glaucus
Vitroliarus ecologus

reason: Not published for any species. A USDA hardiness zone is the average annual EXTREME minimum temperature, and we hold the mean daily minimum of the coldest month, which is a different quantity and typically about 16 C warmer. Presenting one as the other would place a plant several zones too warm, so we do not publish a zone at all.


slug: rhododendron-pilosum

scientific: Rhododendron pilosum

authorship: (Michx. ex Lamb) Craven

epithet: pilosum

preferred: minniebush

Candollea azaleoides

authorship: Baumg.

Menziesia globularis

authorship: Hook.

authorship: Salisb.

Menziesia pilosa

authorship: (Michx.) Juss.

codes: GEO NCA PEN SCA TEN VRG WVA

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 783 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Менцизия волосистая

authors: (Michx.) Craven

USDA PLANTS Database

note: common name, checklist symbol MEPI2


slug: rhododendron-ponticum

scientific: Rhododendron ponticum

epithet: ponticum

preferred: rhododendron

source: wikidata

Azalea baetica

authorship: (Boiss. & Reut.) Kuntze

Azalea lancifolia

authorship: (Moench) Kuntze

Hymenanthes pontica

authorship: (L.) H.F.Copel.

Rhododendron algarvense

authorship: Page

Rhododendron baeticum

authorship: Boiss. & Reut.

Rhododendron deciduum

authorship: Andrews ex Steud.

Rhododendron hyacinthiflorum

authorship: Steud.

Rhododendron lancifolium

authorship: Moench

Rhododendron lowei

authorship: Loudon

Rhododendron myrtifolium

authorship: G.Lodd. ex J.Forbes

Rhododendron odoratum

authorship: Lodd. ex Steud.

Rhododendron ponticum f. album

authorship: Rukhadze & Pachulia

name: Rhododendron ponticum f. aurantiaco-maculatum

name: Rhododendron ponticum f. brachystamineum

Rhododendron ponticum var. brachycarpum

authorship: Boiss.

Rhododendron ponticum var. obtusum

authorship: (P.Watson) G.Don

Rhododendron superponticum

authorship: Cullen

codes: LBS NCS TCS TUR BUL POR SPA TUE

Lebanon-Syria

code: LBS

North Caucasus

code: NCS

Transcaucasus

code: TCS

Türkiye

code: TUR

Bulgaria

code: BUL

region: Southeastern Europe

Portugal

code: POR

region: Southwestern Europe

Spain

code: SPA

Türkiye-in-Europe

code: TUE

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2036 of them. Species with fewer than 30 georeferenced observations get no envelope.

Ursolic-acid

activities: Analgesic AntiEBV AntiHIV AntiTGF-beta Antialzheimeran Antiarrhythmic Antiarthritic Antibacterial

Epicatechin

activities: Allelochemic Anabolic AntiEBV AntiHIV Antiaggregant Antianaphylactic Antibacterial Anticomplementary

Chlorogenic-acid

activities: Aldose-Reductase-Inhibitor Allelochemic Allergenic Analgesic AntiEBV AntiHIV AntiLegionella Antiatherosclerotic

(-)-Epicatechin

activities: 5-Lipoxygenase-Inhibitor ACE-Inhibitor Allelochemic AntiEBV AntiHIV Antiaggregant Antianaphylactic Antibacterial

Caffeic-acid

activities: Aldose-Reductase-Inhibitor Allergenic Analgesic AntiHIV AntiLegionella Antiadenoviral Antiaggregant Antiaging

(+)-Catechin

activities: ACE-Inhibitor AntiHIV Antiaggregant Anticoagulant Anticomplementary Antiinflammatory Antimutagenic Antioxidant

Beta-sitosterol

activities:
Androgenic
Angiogenic
Anorexic
Antiadenomic
Antiandrogenic
Antibacterial
Anticancer (Breast)
Anticancer (Cervix)

Gossypetin

activities: ACE-Inhibitor Antibacterial Antimutagenic Antioxidant Lipoxygenase-Inhibitor Pesticide Pigment

(+)-Gallocatechin

activities:
ACE-Inhibitor
Antimutagenic
Antinociceptive
Antioxidant
Antithyrotoxic
Bactericide
Beta-Adrenergic Receptor Blocker

names:
rhododendron
Pontian rhododendron

names: 钝叶杜鹃 秋花杜鹃

names: azaléia azaléia-da-bélgica

names:
rhododendron pontique
Rhododendron

label: Flower-visited by

partners:
Bombus pratorum
Bombus vestalis
Bombus pascuorum
Aglais urticae
Andrena dorsata
Andrena fucata
Apis mellifera
Bombus hortorum

label: Visited by

partners:
Bombus melanopygus
Chaetapiospora rhododendri
Chalara fungorum
Coleophoma empetri
Cricula andrei
Dialeurodes chittendeni
Ganoderma australe
Grifola frondosa

partners:
Chrysomyxa ledi var. rhododendri
Erysiphe azaleae
Ganoderma australe
Grifola frondosa
Ileostylus micranthus
Mycosphaerella rhododendri
Oidium ericinum

label: Pathogens

type: hasHost

label: Hosts

partners:
Phytophthora kernoviae
Phytophthora ramorum


slug: rhododendron-prinophyllum

scientific: Rhododendron prinophyllum

authorship: (Small) Millais

epithet: prinophyllum

published_in: Rhododendrons : 229 (1917)

preferred: early azalea

Azalea prinophylla

authorship: Small

Azalea rosea

authorship: Loisel.

Rhododendron nudiflorum var. roseum

authorship: (Loisel.) Wiegand

Rhododendron roseum

authorship: (Loisel.) Rehder

codes: ALA ARK ILL KTY MRY MSO NWH NWY NCA OHI OKL PEN VER VRG WVA

Alabama

code: ALA

Arkansas

code: ARK

Illinois

code: ILL

region: North-Central U.S.A.

Kentucky

code: KTY

Maryland

code: MRY

Missouri

code: MSO

New Hampshire

code: NWH

New York

code: NWY

North Carolina

code: NCA

Oklahoma

code: OKL

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1142 of them. Species with fewer than 30 georeferenced observations get no envelope.

partners:
Amphion floridensis
Andrena cornelli
Apoidea
Bombus griseocollis
Bombus impatiens
Bombus ternarius
Bombylius major
Dolichovespula arenaria

label: Eaten by

label: Parasites

authors: (Small) Millais

published_in: Rhododendrons 229


slug: rhododendron-pseudochrysanthum

scientific: Rhododendron pseudochrysanthum

authorship: Hayata

epithet: pseudochrysanthum

name: Rhododendron pseudochrysanthum var. nankotaisanense

authorship: (Hayata) T.Yamaz

Taiwan

code: TAI

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 1221 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 玉山杜鵑 阿里山杜鹃

source: GIFT

authors: Hayata

published_in: J. Coll. Sci. Imp. Univ. Tokyo xxv. Art. 19, 154 (1908)

reason: No vernacular name for this taxon in Wikidata (P1843) or iNaturalist. We do not invent one, and we do not present the scientific name as though it were a common name.


slug: rhododendron-quinquefolium

scientific: Rhododendron quinquefolium

authorship: Bisset & S.Moore

epithet: quinquefolium

Azalea quinquefolia

authorship: (Bisset  & S.Moore) Olmsted,  Coville, & Kelsey

name: Rhododendron quinquefolium f. quinquefolium

Japan

code: JAP

names: シロヤシオ シロヤシオ（白八汐）

label: Photosynthetic pathway

source: USDA PLANTS, GIFT, Wikidata, EOL TraitBank (via Zenodo) and traits mined from USDA NRCS plant guides

authors: Bisset & S.Moore

reason: Fewer than 30 georeferenced research-grade observations of this taxon, which is too few to state a percentile range for the conditions it grows in. We would rather show nothing than a range computed from eight points in one county.


slug: rhododendron-rhuyuenense

scientific: Rhododendron rhuyuenense

authorship: Chun ex P.C.Tam

epithet: rhuyuenense

published_in: Survey Gen. Rhododendron S. China : 96 (1983)

China Southeast

code: CHS

authors: Chun ex P.C.Tam

published_in: Surv. Genus Rhododendron S. China 96, 32

source: IPNI (International Plant Names Index)


slug: rhododendron-rubropilosum

scientific: Rhododendron rubropilosum

epithet: rubropilosum

published_in: J. Coll. Sci. Imp. Univ. Tokyo 30(1): 173 (1911)

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 377 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: 台红毛杜鹃 红毛杜鹃


slug: rhododendron-schlippenbachii

scientific: Rhododendron schlippenbachii

authorship: Maxim.

epithet: schlippenbachii

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 15: 226 (1870)

Azalea schlippenbachii

authorship: (Maxim.) Kuntze

codes: CHI JAP KOR CHM PRM

Inner Mongolia

code: CHI

Korea

code: KOR

Manchuria

code: CHM

Primorye

code: PRM

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 179 of them. Species with fewer than 30 georeferenced observations get no envelope.

source: Kew World Checklist of Useful Plant Species

names:
Royal azalea
deciduous azalea

names: 大字杜鹃 辛佰楷杜鹃

names: Рододендрон Шлиппенбаха

partners:
Aguriahana pictilis
Anthophora villosula
Bombus melanopygus
Bombus terrestris
Papilio macilentus
Papilio xuthus
Xylocopa appendiculata

label: Flowering months

value: Apr-May

label: Fruit type

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg xv. (1871) 226


slug: rhododendron-setosum

scientific: Rhododendron setosum

epithet: setosum

published_in: Mem. Wern. Nat. Hist. Soc. 3: 408 (1821)

Azalea setosa

authorship: (D.Don) Kuntze

Rhododendron anthopogon

authorship: Wall.

codes: CHT EHM NEP

Tibet

code: CHT

East Himalaya

code: EHM

Nepal

code: NEP

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 66 of them. Species with fewer than 30 georeferenced observations get no envelope.

label: Woodiness

published_in: Mem. Wern. Nat. Hist. Soc. iii. (1821) 408

reason: Only 29 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-sichotense

scientific: Rhododendron sichotense

authorship: Pojark.

epithet: sichotense

Rhododendron dauricum subsp. sichotense

authorship: M.S.Alexandrova & P.A.Schmidt

name: Rhododendron mucronulatum subsp. sichotense

authorship: (Pojark.) A.P.Khokhr.

codes: AMU PRM

Amur

code: AMU

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 94 of them. Species with fewer than 30 georeferenced observations get no envelope.

names: Рододендрон сихотинский

label: Growth habit

value: May

authors: Pojark.

reason: Only 1 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-simiarum

scientific: Rhododendron simiarum

authorship: Hance

epithet: simiarum

Azalea simiarum

authorship: (Hance) Kuntze

Rhododendron fokienense

authorship: Franch.

Rhododendron fordii

authorship: Hemsl.

Rhododendron versicolor

authorship: Chun & W.P.Fang

codes: CHC CHS CHH

China South-Central

code: CHC

Hainan

code: CHH

names: 猴头杜鹃 南华杜鹃

label: Life cycle

authors: Hance


slug: rhododendron-simsii

scientific: Rhododendron simsii

authorship: Planch.

epithet: simsii

published_in: Fl. Serres Jard. Eur. 9: 78 (1853)

Azalea indica var. simsii

authorship: (Planch.) L.H.Bailey

authorship: (Planch.) Rehder

Azalea prolifera

authorship: Poit.

Azalea simsii

authorship: (Planch.) H.F.Copel.

Azalea vittata

authorship: (Planch.) Dum.Cours

Azalea vittatopunctata

authorship: Lem.

Rhododendron annamense

authorship: Rehder

Rhododendron bellum

authorship: W.P.Fang & G.Z.Li

Rhododendron indicum var. formosanum

authorship: Hayata

Rhododendron indicum var. ignescens

authorship: Sweet

Rhododendron indicum var. simsii

authorship: (Planch.) Maxim.

Rhododendron simsii var. bellum

authorship: (W.P.Fang & G.Z.Li) G.Z.Li

Rhododendron vittatum

authorship: (Fortune) Planch.

codes: CHC CHS NNS TAI CHT LAO MYA THA VIE

Nansei-shoto

code: NNS

Laos

code: LAO

Myanmar

code: MYA

Thailand

code: THA

Vietnam

code: VIE

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 404 of them. Species with fewer than 30 georeferenced observations get no envelope.

names:
Formosa Azalea
Red Azalea

names: 杜鹃花 杜鹃花叶

names: azaléia azaléia-belga

names: Рододендрон Симса

names: maruba-satsuki シナヤマツツジ

partners:
Bombus bicoloratus
Bombus dahlbomii
Nannotrigona testaceicornis
Papilio memnon
Papilio polytes
Paratrigona subnuda
Phoebis sennae
Polybia ignobilis

partners:
Megommation insigne
Polybia ignobilis

partners:
Ricanula sublimata
Caloptilia azaleella
Pealius azaleae

source: EOL TraitBank / NMNH Botany specimens

label: Height

value: 5 m


slug: rhododendron-smokianum

scientific: Rhododendron smokianum

authorship: Ralf Bauer & Albach

epithet: smokianum

codes: NCA TEN

North Carolina

code: NCA

Tennessee

code: TEN

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 46 of them. Species with fewer than 30 georeferenced observations get no envelope.

authors: Ralf Bauer & Albach


slug: rhododendron-stenopetalum

scientific: Rhododendron stenopetalum

authorship: (R.Hogg) Mabb.

epithet: stenopetalum

Azalea dianthiflora

authorship: Carrière

Azalea linearifolia

authorship: (Siebold & Zucc.) Hook.f.

Azalea macrosepala

authorship: (Maxim.) Kuntze

Rhododendron dianthiflorum

authorship: (Carrière) Millais

Rhododendron hortense

authorship: Nakai

Rhododendron linearifolium

authorship: Siebold & Zucc.

Rhododendron macrosepalum

authorship: Maxim.

Japan

code: JAP

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 67 of them. Species with fewer than 30 georeferenced observations get no envelope.

partners:
Bombus hypocrita hypocrita
Xylocopa appendiculata

partners:
Acytolepis puspa
Callosciurus erythraeus
Caloptilia azaleella
Caloptilia sapporella

authors: (R.Hogg) Mabb.

reason: Only 11 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-tashiroi

scientific: Rhododendron tashiroi

epithet: tashiroi

Rhododendron tashiroi f. album

authorship: Hatus. ex Minamit.

codes: JAP NNS TAI

Taiwan

code: TAI

names: 大武杜鹃 塔西洛杜鹃

value: 6 m

reason: No dated flowering annotations found for this taxon.


slug: rhododendron-thomsonii

scientific: Rhododendron thomsonii

epithet: thomsonii

published_in: Rhododendr. Sikkim-Himalaya 2: t. 12 (1851)

Azalea thomsonii

authorship: (Hook.f.) Kuntze

Rhododendron lopsangianum

authorship: Cowan

name: Rhododendron thomsonii var. lopsangianum

authorship: (Cowan) T.L.Ming

codes: CHT EHM MYA NEP

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 40 of them. Species with fewer than 30 georeferenced observations get no envelope.

label: Least Concern

source: IUCN Red List category via Wikidata (P141)

names: 半圆叶杜鹃 小半圆叶杜鹃

names: azaléia-arbórea rododendro

names: Рододендрон Томсона

partners:
Ileostylus micranthus
Oidium ericinum

published_in: Rhododendr. Sikkim-Himalaya t. 12


slug: rhododendron-tolmachevii

scientific: Rhododendron tolmachevii

authorship: Harmaja

epithet: tolmachevii

Ledum macrophyllum

authorship: Tolm.

Ledum palustre subsp. diversipilosum

authorship: (Nakai) H.Hara

Ledum palustre var. macrophyllum

authorship: (Tolm.) Kitag.

codes: AMU MAG SAK

Magadan

code: MAG

Sakhalin

code: SAK

names: Рододендрон Толмачёва

authors: Harmaja

published_in: Ann. Bot. Fenn. 27(2): 204, nom. nov

reason: Only 0 annotated flowering records, below our threshold of 30. A curve fitted to a dozen records is noise, so we do not draw one.


slug: rhododendron-tomentosum

scientific: Rhododendron tomentosum

epithet: tomentosum

preferred: marsh Labrador tea

Ledum decumbens

authorship: (Aiton) Lodd. ex Steud.

Ledum dilatatum

authorship: Rupr.

Ledum graveolens

authorship: Gilib.

Ledum groenlandicum f. denudatum

authorship: Vict. & J.Rousseau

Ledum maximum

authorship: (Nakai) A.P.Khokhr. & Mazurenko

Ledum palustre

authorship: L.

Ledum palustre f. decumbens

authorship: (Aiton) Y.L.Chou & S.L.Tung

Ledum palustre f. denudatum

authorship: (Vict. & J.Rousseau) Boivin

Ledum palustre subsp. decumbens

authorship: Hultén

Ledum palustre subsp. longifolium

authorship: Kitag.

Ledum palustre var. angustifolium

authorship: Hook.

Ledum palustre var. decumbens

authorship: Aiton

Ledum palustre var. dilatatum

authorship: Wahlenb.

Ledum tomentosum

authorship: Stokes

Rhododendron palustre

authorship: (L.) Kron & Judd

Rhododendron tomentosum

authorship: (Stokes) Harmaja

name: Rhododendron tomentosum subsp. decumbens

authorship: (Aiton) Elven & D.F.Murray

name: Rhododendron tomentosum subsp. subarcticum

authorship: (Harmaja) G.D.Wallace

name: Rhododendron tomentosum subsp. tomentosum

codes: ALT AMU BRY CTA CHI IRK JAP KAM KAZ KHA KOR KRA KUR MAG CHM MON PRM SAK TVA WSB YAK AUT BLT BLR RUC CZE RUE FIN GER RUN RUW NOR POL SWE UKR ASK ABT ALU BRC GNL LAB MAN NWT NUN ONT QUE SAS YUK

Altay

code: ALT

region: Siberia

Buryatiya

code: BRY

Chita

code: CTA

Inner Mongolia

code: CHI

Irkutsk

code: IRK

Kamchatka

code: KAM

Kazakhstan

code: KAZ

region: Central Asia

Khabarovsk

code: KHA

Korea

code: KOR

Krasnoyarsk

code: KRA

Kuril Is.

code: KUR

Manchuria

code: CHM

Mongolia

code: MON

region: Mongolia

Primorye

code: PRM

Tuva

code: TVA

West Siberia

code: WSB

Yakutiya

code: YAK

Austria

code: AUT

region: Middle Europe

method: Climate sampled at every georeferenced research-grade observation of the species. Reported as the 5th to 95th percentile across 2069 of them. Species with fewer than 30 georeferenced observations get no envelope.

Quercetin

activities: 11B-HSD-Inhibitor 5-Lipoxygenase-Inhibitor ATPase-Inhibitor Aldehyde-Oxidase-Inhibitor Aldose-Reductase-Inhibitor Allelochemic Allergenic Analgesic

Hyperoside

activities: Aldose-Reductase-Inhibitor Analgesic Antiaging Antibacterial Anticancer Anticapillary-Fragility Antidermatitic Antielastase

Arbutin

activities: Allelochemic Antibacterial Antiedemic Antimelanogenic Antiseptic Antistreptococcic Antitussive Artemicide

Citric-acid

activities: Allergenic Alpha-Amylase-Inhibitor Antiaphthic Antiatherosclerotic Antibacterial Anticalculic Anticoagulant Antileishmanic

Myrcene

activities: ACE-Inhibitor Aldose-Reductase-Inhibitor Allergenic Analgesic Antibacterial Anticonvulsant Antimutagenic Antinitrosaminic

Malic-acid

activities:
Antiatherosclerotic
Antibacterial
Antifibromyalgic
Antioxidant Synergist
Antiseborrheic
Antiseptic
Antitubercular
Antitumor

Oxalic-acid

activities: Acaricide Antiseptic CNS-Paralytic Fatal Hemostatic Irritant Pesticide Renotoxic

Tartaric-acid

activities:
Acidifier
Additive
Antioxidant Synergist
FLavor
Irritant
Sequestrant

names: Багульник болотный

names: اکلیل کوهی وحشی

names: Багно звичайне

partners:
Aporia crataegi
Callophrys rubi
Prosternon tessellatum
Sericus brunneus
Boloria euphrosyne
Clossiana euphrosyne
Judolia montivagans montivagans
Judolia sexmaculata

partners:
Alosterna tabacicolor
Celastrina argiolus
Choristoneura lafauryana
Colladonus torneella
Lepus arcticus
Neofaculta infernella
Rhopobota myrtillana


slug: rhododendron-torajaense

scientific: Rhododendron torajaense

authorship: Craven

epithet: torajaense

published_in: J. Adelaide Bot. Gard. 27: 30 (2014)

Sulawesi

code: SUL

published_in: J. Adelaide Bot. Gard. 27(4): 30

name: Kew, World Checklist of Vascular Plants (WCVP v16)


slug: rhododendron-triflorum

scientific: Rhododendron triflorum

epithet: triflorum

published_in: Rhododendr. Sikkim-Himalaya 2: t. 19 (1851)

Azalea triflora

authorship: (Hook.f.) Kuntze

Rhododendron bauhiniiflorum

authorship: G.Watt ex Hutch.

Rhododendron deflexum

authorship: Griff.

name: Rhododendron triflorum var. bauhiniiflorum

authorship: (Watt ex Hutch.) Cullen

Rhododendron triflorum var. mahogani

authorship: Hutch.

codes: CHC CHT ASS EHM MYA NEP

China South-Central

code: CHC

Tibet

code: CHT

Assam

code: ASS

East Himalaya

code: EHM

Myanmar

code: MYA

Nepal

code: NEP

names: Рододендрон трёхцветковый

name: GIFT (Global Inventory of Floras and Traits)

name: Traits mined from USDA NRCS plant guides

published_in: Rhododendr. Sikkim-Himalaya t. 19


slug: rhododendron-tschonoskii

scientific: Rhododendron tschonoskii

authorship: Maxim.

epithet: tschonoskii

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg, sér. 3, 15: 230 (1870)

Azalea tschonoskii

authorship: (Maxim.) Kuntze

name: Rhododendron tschonoskii var. tschonoskii

Rhododendron tschonoskii var. typicum

authorship: Makino

codes: JAP KUR SAK

Japan

code: JAP

Sakhalin

code: SAK

names: Рододендрон Чоноски

value: Jul

published_in: Bull. Acad. Imp. Sci. Saint-Pétersbourg xv. (1871) 230


slug: rhododendron-ungernii

scientific: Rhododendron ungernii

authorship: Trautv. ex Regel

epithet: ungernii

Rhododendron ungernii

authorship: Trautv.

codes: TCS TUR

Transcaucasus

code: TCS

region: Caucasus

Türkiye

code: TUR

region: Western Asia

names: Рододендрон Унгерна

value: May-Jul

authors: Trautv

published_in: Trudy Imp. S.-Peterburgsk. Bot. Sada ix. (1886) 514; Regel, in Gartenfl. xxxv. (1886) 278. fig.1