Plate 1 figs. a–h · 6 observations
This species has been photographed under an open licence only 6 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.
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 15 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Andaman Is. | AND | ASIA-TROPICAL |
| Assam | ASS | |
| Bangladesh | BAN | |
| Borneo | BOR | |
| Cambodia | CBD | |
| India | IND | |
| Laccadive Is. | LDV | |
| Laos | LAO | |
| Malaya | MLY | |
| Myanmar | MYA | |
| Nicobar Is. | NCB | |
| Sri Lanka | SRL | |
| Sumatera | SUM | |
| Thailand | THA | |
| Vietnam | VIE |
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 32 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.
- Asclepias asthmatica L.f.
- Asclepias prolifera Rottler ex Ainslie
- Asclepias tunicata Hook.f.
- Asclepias vomitoria J.Koenig ex Hook.f.
- Cynanchum flavum Thunb. ex Hook.f.
- Cynanchum indicum Burm.f.
- Cynanchum ipecacuanha Willd.
- Cynanchum mucronatum Andrews
- Cynanchum tomentosum Lam.
- Cynanchum undatum Andrews
- Cynanchum viridiflorum Sims
- Cynanchum vomitorium Lam.
- Diplolepis vomitoria Lindl.
- Gonolobus mucronatus Sweet
- Hoya planiflora Wall. ex Hook.f.
- Marsdenia vomitoria Moon
- Sonninia vomitoria (Lindl.) Kostel.
- Tylophora asthmatica (L.f.) Wight & Arn.
- Tylophora asthmatica var. glabra Decne.
- Tylophora coilolepis Schltr.
- Tylophora flava Trimen
- Tylophora flavescens Ridl.
- Tylophora indica (Burm.f.) Merr.
- Tylophora indica var. glabra (Decne.) H.Huber
and 8 more.
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
- Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
- 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.