Chassalia curviflora(Wall.) Thwaites

WFO wfo-0000840673 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Chassalia curviflora, photographed by Samuel Lee
fig. a Samuel Lee, CC BY 4.0 / 2022-03-19 / obs. 183549588
Chassalia curviflora, photographed by Samuel Lee
fig. b Samuel Lee, CC BY 4.0 / obs. 183550889
Chassalia curviflora, photographed by Ong Jyh Seng
fig. c Ong Jyh Seng, CC BY-SA 4.0 / obs. 181922669
Chassalia curviflora, photographed by Иван Ковтун Ivan Kovtun
fig. d Иван Ковтун Ivan Kovtun, CC BY 4.0 / obs. 179922344
Chassalia curviflora, photographed by Oleg Kosterin
fig. e Oleg Kosterin, CC BY 4.0 / obs. 66483281
Chassalia curviflora, photographed by Dinesh Valke
fig. f Dinesh Valke, CC BY-SA 4.0 / obs. 200444339
Chassalia curviflora, photographed by Oleg Kosterin
fig. g Oleg Kosterin, CC BY 4.0 / obs. 109438930
Chassalia curviflora, photographed by Shaan Aroeste
fig. h Shaan Aroeste, CC BY 4.0 / obs. 193158685

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.

Native range 23 botanical countries

Regions where Chassalia curviflora is native: China South-Central, China Southeast, Hainan, Tibet, Andaman Is., Assam, Bangladesh, Borneo, Cambodia, East Himalaya, India, Jawa, Laos, Lesser Sunda Is., Malaya, Myanmar, Nepal, Nicobar Is., Philippines, Sri Lanka, Sumatera, Thailand, Vietnam China South-CentralChina SoutheastHainanTibetAssamBangladeshBorneoCambodiaEast HimalayaIndiaJawaLaosLesser Sunda Is.MalayaMyanmarNepalPhilippinesSri LankaSumateraThailandVietnam Andaman Is.Nicobar Is.
Native distribution of Chassalia curviflora, 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. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Andaman Is. AND ASIA-TROPICAL
Assam ASS
Bangladesh BAN
Borneo BOR
Cambodia CBD
East Himalaya EHM
India IND
Jawa JAW
Laos LAO
Lesser Sunda Is. LSI
Malaya MLY
Myanmar MYA
Nepal NEP
Nicobar Is. NCB
Philippines PHI
Sri Lanka SRL
Sumatera SUM
Thailand THA
Vietnam VIE
China South-Central CHC ASIA-TEMPERATE
China Southeast CHS
Hainan CHH
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.

Where it actually grows measured, from 296 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 15.4 °C 21.7 °C 24.8 °C
Warmest month, mean daily high 28.4 °C 30.9 °C 35.7 °C
Annual rainfall 1,887 mm 2,881 mm 4,043 mm
Rainfall in the driest quarter 28 mm 139 mm 548 mm

It is not found anywhere that gets close to freezing. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 296 research-grade observations of Chassalia curviflora that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 30 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.

  • Chassalia ambigua (Wight & Arn.) Alston
  • Chassalia chartacea Craib
  • Chassalia curviflora var. ellipsoidea Hook.f.
  • Chassalia curviflora var. linearis King & Gamble
  • Chassalia curviflora var. longifolia Hook.f.
  • Chassalia curviflora var. lurida (Blume) Hochr.
  • Chassalia curviflora var. megacoma (Miq.) Hochr.
  • Chassalia curviflora var. ophioxyloides (Wall.) Deb & B.Krishna
  • Chassalia longifolia (Hook.f.) K.M.Wong
  • Chassalia lurida (Blume) Miq.
  • Chassalia lurida var. angustifolia Miq.
  • Chassalia lurida var. megacoma Miq.
  • Chassalia obscurinervia Elmer
  • Chassalia ophioxyloides (Wall.) Craib
  • Chassalia sanguiana Miq.
  • Chassalia staintonii (H.Hara) Deb & Mondal
  • Chassalia virgata Talbot
  • Ophiorrhiza staintonii H.Hara
  • Psychotria ambigua Wight & Arn.
  • Psychotria curviflora Wall.
  • Psychotria gendarussifolia Blume
  • Psychotria longifolia Dalzell
  • Psychotria lurida Blume
  • Psychotria ophioxyloides Wall.

and 6 more.

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.