Delphinium nudicauleTorr. & A.Gray

Red larkspur

WFO wfo-0000640449 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Delphinium nudicaule, photographed by Cricket Raspet
fig. a Cricket Raspet, CC BY 4.0 / 2022-05-08 / obs. 196111104
Delphinium nudicaule, photographed by Lori Brandt Dudzik
fig. b Lori Brandt Dudzik, CC BY-SA 4.0 / obs. 191936650
Delphinium nudicaule, photographed by Arvel Hernandez
fig. c Arvel Hernandez, CC BY 4.0 / obs. 188661205
Delphinium nudicaule, photographed by Drew Meyer
fig. d Drew Meyer, CC0 1.0 / obs. 202106551
Delphinium nudicaule, photographed by Cricket Raspet
fig. e Cricket Raspet, CC BY 4.0 / obs. 190811310
Delphinium nudicaule, photographed by Arvel Hernandez
fig. f Arvel Hernandez, CC BY 4.0 / obs. 188682455
Delphinium nudicaule, photographed by Arvel Hernandez
fig. g Arvel Hernandez, CC BY 4.0 / obs. 188681861
Delphinium nudicaule, photographed by Brook
fig. h Brook, CC BY 4.0 / obs. 187882126

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 = 1,620 observations

Peak flowering in Apr, from 1,620 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 6 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.

  • Delphinastrum nudicaule (Torr. & A.Gray) Nieuwl.
  • Delphinium decorum var. nudicaule (Torr. & A.Gray) Huth
  • Delphinium nudicaule f. elatius (W.Thomps.) Ewan
  • Delphinium nudicaule var. elatium J.W.Thomps.
  • Delphinium nudicaule var. foliosum Torr.
  • Delphinium sarcophyllum Hook. & Arn.

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.