Rudbeckia amplexicaulisVahl

clasping coneflower

WFO wfo-0000072191 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Rudbeckia amplexicaulis, photographed by saltyhiker
fig. a saltyhiker, CC BY 4.0 / 2022-05-14 / obs. 197772471
Rudbeckia amplexicaulis, photographed by saltyhiker
fig. b saltyhiker, CC BY 4.0 / obs. 196254931
Rudbeckia amplexicaulis, photographed by mefisher
fig. c mefisher, CC0 1.0 / obs. 205014993
Rudbeckia amplexicaulis, photographed by saltyhiker
fig. d saltyhiker, CC BY 4.0 / obs. 196254321
Rudbeckia amplexicaulis, photographed by Mike Tilley
fig. e Mike Tilley, CC BY 4.0 / obs. 197593619
Rudbeckia amplexicaulis, photographed by Meghan Cassidy
fig. f Meghan Cassidy, CC BY-SA 4.0 / obs. 195104407
Rudbeckia amplexicaulis, photographed by Rich Sommer
fig. g Rich Sommer, CC BY 4.0 / obs. 192661749
Rudbeckia amplexicaulis, photographed by Martha Richeson
fig. h Martha Richeson, CC0 1.0 / obs. 191862437

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.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 1,439 observations

Peak flowering in May, from 1,439 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 4 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.

  • Dracopis amplexicaulis (Vahl) Cass.
  • Dracopis amplexicaulis (Vahl) Less.
  • Rudbeckia perfoliata Cav.
  • Rudbeckia spathulata 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.