Clematis pitcheriTorr. & A.Gray

Pitcher's leatherflower

WFO wfo-0000610508 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Clematis pitcheri, photographed by Ryan Sorrells
fig. a Ryan Sorrells, CC BY 4.0 / 2022-06-04 / obs. 203407321
Clematis pitcheri, photographed by Annika Lindqvist
fig. b Annika Lindqvist, CC BY 4.0 / obs. 205592692
Clematis pitcheri, photographed by Ryan Sorrells
fig. c Ryan Sorrells, CC BY 4.0 / obs. 160745395
Clematis pitcheri, photographed by Cazody
fig. d Cazody, CC0 1.0 / obs. 167731830
Clematis pitcheri, photographed by Catherine C. Galley
fig. e Catherine C. Galley, CC BY 4.0 / obs. 156530339
Clematis pitcheri, photographed by saltyhiker
fig. f saltyhiker, CC BY 4.0 / obs. 157246381
Clematis pitcheri, photographed by Catherine C. Galley
fig. g Catherine C. Galley, CC BY 4.0 / obs. 153599502
Clematis pitcheri, photographed by saltyhiker
fig. h saltyhiker, CC BY 4.0 / obs. 144764037

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 = 712 observations

Peak flowering in May, from 712 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 21 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.

  • Clematis coloradoensis Buckley
  • Clematis cordata subsp. pitcheri (Torr. & A.Gray) Voss
  • Clematis dictyota Greene
  • Clematis filifera Benth.
  • Clematis filifera var. incisa Hemsl.
  • Clematis pitcheri Sarg. ex Lavall.
  • Clematis pitcheri f. lasiostylis A.Gray
  • Clematis pitcheri f. leiostylis A.Gray
  • Clematis pitcheri var. coloradoensis (Buckley) Lavallée
  • Clematis pitcheri var. filifera (Benth.) R.O.Erickson
  • Clematis pitcheri var. filifera (Benth.) B.L.Rob.
  • Clematis sargentii Lavallée
  • Clematis simsii subsp. filifera (Benth.) Kuntze
  • Clematis simsii subsp. pitcheri (Torr. & A.Gray) Kuntze
  • Clematis simsii var. sargentii (Lavallée) K.C.Davis
  • Clematis viorna var. pitcheri (Torr. & A.Gray) J.James
  • Clematis viorna var. sargentii (Lavallée) Kuntze
  • Coriflora pitcheri (Torr. & A.Gray) W.A.Weber
  • Viorna dictyota A.Heller
  • Viorna filifera (Benth.) Wooton & Standl.
  • Viorna pitcheri (Torr. & A.Gray) Britton

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.