Senna sulfurea(DC. ex Collad.) H.S.Irwin & Barneby

smooth senna

WFO wfo-0000183557 Accepted WFO 2026-06 8 photographs CC0 / CC BY

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.

Senna sulfurea, photographed by Siddarth Machado
fig. a Siddarth Machado, CC BY 4.0 / 2020-08-21 / obs. 91772738
Senna sulfurea, photographed by Omar Haroon
fig. b Omar Haroon, CC0 1.0 / obs. 85240436
Senna sulfurea, photographed by Siddarth Machado
fig. c Siddarth Machado, CC BY 4.0 / obs. 91772667
Senna sulfurea, photographed by Siddarth Machado
fig. d Siddarth Machado, CC BY 4.0 / obs. 91772672
Senna sulfurea, photographed by Swarochi Tathagath
fig. e Swarochi Tathagath, CC BY 4.0 / obs. 103330758
Senna sulfurea, photographed by Swarochi Tathagath
fig. f Swarochi Tathagath, CC BY 4.0 / obs. 103234192
Senna sulfurea, photographed by Swarochi Tathagath
fig. g Swarochi Tathagath, CC BY 4.0 / obs. 103235390
Senna sulfurea, photographed by Swarochi Tathagath
fig. h Swarochi Tathagath, CC BY 4.0 / obs. 103330768

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 14 botanical countries

Regions where Senna sulfurea is native: Assam, Bangladesh, Cambodia, East Himalaya, India, Laos, Myanmar, Sri Lanka, Thailand, Vietnam, West Himalaya, Northern Territory, Queensland, Western Australia AssamBangladeshCambodiaEast HimalayaIndiaLaosMyanmarSri LankaThailandVietnamWest HimalayaNorthern TerritoryQueenslandWestern Australia
Native distribution of Senna sulfurea, 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
Bangladesh BAN
Cambodia CBD
East Himalaya EHM
India IND
Laos LAO
Myanmar MYA
Sri Lanka SRL
Thailand THA
Vietnam VIE
West Himalaya WHM
Northern Territory NTA AUSTRALASIA
Queensland QLD
Western Australia WAU

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.

  • Cassia arborescens Vahl
  • Cassia enneaphylla K.D.Koenig ex Wight & Arn.
  • Cassia glauca Lam.
  • Cassia petropolitana Glaz.
  • Cassia sieberi C.Presl
  • Cassia sulfurea DC. ex Collad.
  • Cassia surattensis subsp. glauca (Lam.) K.Larsen & S.S.Larsen
  • Psilorhegma glauca (Lam.) O.Deg. & I.Deg.
  • Robinia javanica Burm.f.
  • Senna arborescens Roxb.
  • Senna surattensis subsp. glauca (Lam.) X.Y.Zhu
  • Senna surattensis subsp. sulfurea (DC. ex Collad.) Randell
  • Wellia tagera Rheede

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.