Penstemon cobaeaNutt.

cobaea beardtongue

WFO wfo-0001136586 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Penstemon cobaea, photographed by Thomas Koffel
fig. a Thomas Koffel, CC BY 4.0 / 2022-06-03 / obs. 204545722
Penstemon cobaea, photographed by Thomas Koffel
fig. b Thomas Koffel, CC BY 4.0 / obs. 204294244
Penstemon cobaea, photographed by Michelle W. （鍾偉瑋）
fig. c Michelle W. （鍾偉瑋）, CC BY 4.0 / obs. 197106030
Penstemon cobaea, photographed by Reid Hardin
fig. d Reid Hardin, CC BY 4.0 / obs. 194108341
Penstemon cobaea, photographed by saltyhiker
fig. e saltyhiker, CC BY 4.0 / obs. 195601706
Penstemon cobaea, photographed by Cleveland Powell
fig. f Cleveland Powell, CC BY 4.0 / obs. 192006755
Penstemon cobaea, photographed by saltyhiker
fig. g saltyhiker, CC BY 4.0 / obs. 190194348
Penstemon cobaea, photographed by Thomas Koffel
fig. h Thomas Koffel, CC BY 4.0 / obs. 139388833

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 = 433 observations

Peak flowering in Apr, from 433 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.

  • Penstemon cobaea subsp. purpureus (Pennell) Pennell
  • Penstemon cobaea subsp. typicus Pennell
  • Penstemon grandiflorus F.Dietr.
  • Penstemon hansonii A.Nelson

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.