Scleromitrion diffusum(Willd.) R.J.Wang

WFO wfo-0001341321 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 5 observations

This species has been photographed under an open licence only 5 times, 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.

Scleromitrion diffusum, photographed by Agnes Trekker
fig. a Agnes Trekker, CC0 1.0 / 2021-10-31 / obs. 166587115
Scleromitrion diffusum, photographed by Agnes Trekker
fig. b Agnes Trekker, CC0 1.0 / obs. 160098004
Scleromitrion diffusum, photographed by Ong Jyh Seng
fig. c Ong Jyh Seng, CC BY-SA 4.0 / obs. 89551893
Scleromitrion diffusum, photographed by Cheng-Tao Lin
fig. d Cheng-Tao Lin, CC BY 4.0 / obs. 24342078
Scleromitrion diffusum, photographed by Agnes Trekker
fig. e Agnes Trekker, CC0 1.0 / obs. 160097594
Scleromitrion diffusum, photographed by Ong Jyh Seng
fig. f Ong Jyh Seng, CC BY-SA 4.0 / obs. 89551908
Scleromitrion diffusum, photographed by Cheng-Tao Lin
fig. g Cheng-Tao Lin, CC BY 4.0 / obs. 24342087
Scleromitrion diffusum, photographed by Samuel Lee
fig. h Samuel Lee, CC BY 4.0 / obs. 156855970

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 25 botanical countries

Regions where Scleromitrion diffusum is native: China South-Central, China Southeast, Hainan, Japan, Korea, Nansei-shoto, Taiwan, Andaman Is., Assam, Bangladesh, Borneo, Cambodia, East Himalaya, India, Jawa, Lesser Sunda Is., Malaya, Myanmar, Nepal, Nicobar Is., Philippines, Sri Lanka, Sumatera, Thailand, Vietnam China South-CentralChina SoutheastHainanJapanTaiwanAssamBangladeshBorneoCambodiaEast HimalayaIndiaJawaLesser Sunda Is.MalayaMyanmarNepalPhilippinesSri LankaSumateraThailandVietnam KoreaNansei-shotoAndaman Is.Nicobar Is.
Native distribution of Scleromitrion diffusum, 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
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
Japan JAP
Korea KOR
Nansei-shoto NNS
Taiwan TAI

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 15 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.

  • Hedyotis brachypoda R.Br. ex Wall.
  • Hedyotis diffusa Willd.
  • Hedyotis diffusa var. extensa (Hook.f.) R.Dutta
  • Hedyotis diffusa var. longipes Nakai
  • Hedyotis extensa R.Br. ex Wall.
  • Hedyotis polygonoides Wall.
  • Hedyotis radicans Bartl. ex DC.
  • Hedyotis ramosissima Kurz
  • Oldenlandia angustifolia var. pedicellata Miq.
  • Oldenlandia corymbosa var. uniflora (Benth.) Masam.
  • Oldenlandia diffusa (Willd.) Roxb.
  • Oldenlandia diffusa var. extensa Hook.f.
  • Oldenlandia diffusa var. polygonoides Hook.f.
  • Oldenlandia herbacea var. uniflora Benth.
  • Oldenlandia pauciflora Roxb. ex Wight & Arn.

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.