Cyrtocymura scorpioides(Lam.) H.Rob.

WFO wfo-0000089321 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Cyrtocymura scorpioides, photographed by Skjold Søndergaard
fig. a Skjold Søndergaard, CC BY 4.0 / 2021-09-16 / obs. 158287868

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 24 botanical countries

Regions where Cyrtocymura scorpioides is native: Mexico Southeast, Argentina Northeast, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Ecuador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Nicaragua, Paraguay, Peru, Suriname, Trinidad-Tobago, Uruguay, Venezuela, Venezuelan Antilles Mexico SoutheastArgentina NortheastBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralColombiaEcuadorFrench GuianaGuatemalaGuyanaHaitiHondurasNicaraguaParaguayPeruSurinameTrinidad-TobagoUruguayVenezuela Venezuelan Antilles
Native distribution of Cyrtocymura scorpioides, 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
Argentina Northeast AGE SOUTHERN AMERICA
Belize BLZ
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Colombia CLM
Ecuador ECU
French Guiana FRG
Guatemala GUA
Guyana GUY
Haiti HAI
Honduras HON
Nicaragua NIC
Paraguay PAR
Peru PER
Suriname SUR
Trinidad-Tobago TRT
Uruguay URU
Venezuela VEN
Venezuelan Antilles VNA
Mexico Southeast MXT NORTHERN AMERICA

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.

Flowering 57 in flower of 62 examined

Proportion of examined Cyrtocymura scorpioides in flower, by month
Month In flower Examined Share 95% interval
Jan 9 9 100% 70% to 100%
Feb 2 2 too few examined
Mar 1 1 too few examined
Apr 3 5 60% 23% to 88%
May 2 2 too few examined
Jun 0 1 too few examined
Jul 1 1 too few examined
Aug 5 5 100% 57% to 100%
Sep 17 17 100% 82% to 100%
Oct 11 11 100% 74% to 100%
Nov 5 7 71% 36% to 92%
Dec 1 1 too few examined

Peak flowering in Jan. Each bar is the share of Cyrtocymura scorpioides observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 57 of 62 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 6 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 28 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.

  • Cacalia scorpioides Lam.
  • Cacalia scorpioides Kuntze
  • Cacalia scorpioides var. glabriuscula Kuntze
  • Cacalia scorpioides var. scorpioides
  • Cacalia scorpioides var. subrepanda (Pers.) Kuntze
  • Cacalia scorpioides var. subtomentosa Kuntze
  • Cacalia scorpioides var. tomentosa Kuntze
  • Cacalia tournefortioides (Kunth) Kuntze
  • Chrysocoma repanda Vell.
  • Conyza scorpioides Lam.
  • Lepidaploa scorpioides (Lam.) Cass.
  • Staehelina solidaginoides Willd. ex Less.
  • Vernonia arborescens var. corrientensis Hieron.
  • Vernonia centriflora Link & Otto
  • Vernonia flavescens Less.
  • Vernonia longeracemosa Mart. ex DC.
  • Vernonia saepiepium Ekman
  • Vernonia scorpioides (Lam.) Cass.
  • Vernonia scorpioides (Lam.) Pers.
  • Vernonia scorpioides var. centriflora (Link & Otto) DC.
  • Vernonia scorpioides var. longeracemosa DC.
  • Vernonia scorpioides var. longifolia DC.
  • Vernonia scorpioides var. scorpioides
  • Vernonia scorpioides var. subrepanda (Pers.) DC.

and 4 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.