Adenocaulon bicolorHook.

American trailplant

WFO wfo-0000096216 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Adenocaulon bicolor, photographed by joergmlpts
fig. a joergmlpts, CC BY 4.0 / 2022-05-13 / obs. 197343953
Adenocaulon bicolor, photographed by Gavin Slater
fig. b Gavin Slater, CC BY 4.0 / obs. 196710296
Adenocaulon bicolor, photographed by Braden J. Judson
fig. c Braden J. Judson, CC0 1.0 / obs. 198915152
Adenocaulon bicolor, photographed by giantcicada
fig. d giantcicada, CC BY 4.0 / obs. 197025096
Adenocaulon bicolor, photographed by Drew Meyer
fig. e Drew Meyer, CC0 1.0 / obs. 202597826
Adenocaulon bicolor, photographed by giantcicada
fig. f giantcicada, CC BY 4.0 / obs. 200744435
Adenocaulon bicolor, photographed by joergmlpts
fig. g joergmlpts, CC BY 4.0 / obs. 194853881
Adenocaulon bicolor, photographed by Braden J. Judson
fig. h Braden J. Judson, CC0 1.0 / obs. 196889252

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.

Flowering n = 345 observations

Peak flowering in Jul, from 345 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 3 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.

  • Adenocaulon bicolor var. bicolor
  • Adenocaulon bicolor var. integrifolium (Nutt.) Torr. & A.Gray
  • Adenocaulon integrifolium Nutt.

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.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.