Tanaecium dichotomum(Jacq.) Kaehler & L.G.Lohmann

WFO wfo-1000034770 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Tanaecium dichotomum, photographed by Nolan Exe
fig. a Nolan Exe, CC BY 4.0 / 2019-11-26 / obs. 59354362
Tanaecium dichotomum, photographed by Hugo Hulsberg
fig. b Hugo Hulsberg, CC0 1.0 / obs. 175046358
Tanaecium dichotomum, photographed by Hugo Hulsberg
fig. c Hugo Hulsberg, CC0 1.0 / obs. 167305556
Tanaecium dichotomum, photographed by Hugo Hulsberg
fig. d Hugo Hulsberg, CC0 1.0 / obs. 167306231
Tanaecium dichotomum, photographed by Patricio Cowper Coles
fig. e Patricio Cowper Coles, CC BY 4.0 / obs. 123073398
Tanaecium dichotomum, photographed by Thomaz Ricardo Favreto Sinani
fig. f Thomaz Ricardo Favreto Sinani, CC BY 4.0 / obs. 117051225
Tanaecium dichotomum, photographed by Neptalí Ramírez Marcial
fig. g Neptalí Ramírez Marcial, CC BY 4.0 / obs. 25294938
Tanaecium dichotomum, photographed by Fede y Vani
fig. h Fede y Vani, CC0 1.0 / obs. 170738626

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 22 botanical countries

Regions where Tanaecium dichotomum is native: Mexico Gulf, Mexico Southeast, Mexico Southwest, Argentina Northeast, Argentina Northwest, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Nicaragua, Panamá, Paraguay, Peru, Venezuela Mexico GulfMexico SoutheastMexico SouthwestArgentina NortheastArgentina NorthwestBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralColombiaCosta RicaEcuadorFrench GuianaGuyanaNicaraguaPanamáParaguayPeruVenezuela
Native distribution of Tanaecium dichotomum, 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
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Belize BLZ
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Colombia CLM
Costa Rica COS
Ecuador ECU
French Guiana FRG
Guyana GUY
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Venezuela VEN
Mexico Gulf MXG NORTHERN AMERICA
Mexico Southeast MXT
Mexico Southwest MXS

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 45 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.

  • Adenocalymma friesianum Kraenzl.
  • Arrabidaea acuminata (J.R.Johnst.) Urb.
  • Arrabidaea barquisimetensis Pittier
  • Arrabidaea corallina (Jacq.) Sandwith
  • Arrabidaea guaricensis Pittier
  • Arrabidaea lenticellosa Pittier
  • Arrabidaea obliqua (Kunth) Bureau
  • Arrabidaea obliqua var. hirsuta (DC.) Dugand
  • Arrabidaea obovata DC.
  • Arrabidaea ovalifolia Pittier
  • Arrabidaea praecox Hassl.
  • Arrabidaea rhodantha Bureau & K.Schum.
  • Arrabidaea rhodantha f. glabrescens Sprague
  • Arrabidaea rhodantha f. mollis Hassl.
  • Arrabidaea rhodantha f. puberula Hassl.
  • Arrabidaea rhodantha f. subglabra Hassl.
  • Arrabidaea rhodantha var. elliptica Sprague
  • Arrabidaea rhodantha var. genuina Hassl.
  • Arrabidaea rhodantha var. induta Hassl.
  • Arrabidaea rhodantha var. oxyphylla Sprague & Sandwith
  • Arrabidaea rhodantha var. praecox (Hassl.) Hassl.
  • Arrabidaea rhodantha var. typica Sprague
  • Arrabidaea rotundata (DC.) Bureau ex K.Schum.
  • Arrabidaea sickiana J.C.Gomes

and 21 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.