Rhododendron maddeniiHook.f.

WFO wfo-0001048032 Accepted WFO 2026-06 6 photographs CC BY

Plate 1 figs. a–f · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Rhododendron maddenii, photographed by Siddarth Machado
fig. a Siddarth Machado, CC BY 4.0 / 2017-05-04 / obs. 65717839
Rhododendron maddenii, photographed by Siddarth Machado
fig. b Siddarth Machado, CC BY 4.0 / obs. 65717849
Rhododendron maddenii, photographed by Siddarth Machado
fig. c Siddarth Machado, CC BY 4.0 / obs. 65717857
Rhododendron maddenii, photographed by Siddarth Machado
fig. d Siddarth Machado, CC BY 4.0 / obs. 65717848
Rhododendron maddenii, photographed by Siddarth Machado
fig. e Siddarth Machado, CC BY 4.0 / obs. 65717856
Rhododendron maddenii, photographed by Siddarth Machado
fig. f Siddarth Machado, CC BY 4.0 / obs. 65717829

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
02651497
Filed as
Rhododendron maddenii subsp. crassum (Franch.) Cullen
Det. by
S. E. Clemants 1981-01-01
Collected
F. Kingdon-Ward 1948-07-18
Origin
IN
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 8 botanical countries

Regions where Rhododendron maddenii is native: China South-Central, Tibet, Assam, East Himalaya, Laos, Myanmar, Thailand, Vietnam China South-CentralTibetAssamEast HimalayaLaosMyanmarThailandVietnam
Native distribution of Rhododendron maddenii, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Assam ASS ASIA-TROPICAL
East Himalaya EHM
Laos LAO
Myanmar MYA
Thailand THA
Vietnam VIE
China South-Central CHC ASIA-TEMPERATE
Tibet CHT

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 13 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Azalea crassa (Franch.) Kuntze
  • Azalea maddenii (Hook.f.) Kuntze
  • Rhododendron brachysiphon Balf.f.
  • Rhododendron brevitubum Balf.f. & R.E.Cooper
  • Rhododendron calophyllum Nutt.
  • Rhododendron chapaense Dop
  • Rhododendron crassum Franch.
  • Rhododendron jenkinsii Nutt.
  • Rhododendron macranthum Griff.
  • Rhododendron maddenii var. longiflorum W.Watson
  • Rhododendron manipurense Balf.f. & Watt
  • Rhododendron odoriferum Hutch.
  • Rhododendron polyandrum Hutch.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.