Cercocarpus betuloidesNutt.

Birchleaf Mountain Mahogany

WFO wfo-0001014585 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Cercocarpus betuloides, photographed by Cricket Raspet
fig. a Cricket Raspet, CC BY 4.0 / 2022-04-17 / obs. 188939431

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 = 322 observations

Flowering observations of Cercocarpus betuloides by month
MonthObservations
Jan2
Feb22
Mar94
Apr143
May52
Jun3
Jul1
Aug4
Sep0
Oct1
Nov0
Dec0

Peak flowering in Apr, from 322 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 22 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.

  • Cercocarpus alnifolius Rydb.
  • Cercocarpus betulaefolius var. blancheae C.K.Schneid.
  • Cercocarpus betulifolius C.K.Schneid.
  • Cercocarpus betulifolius f. glabrescens C.K.Schneid.
  • Cercocarpus betulifolius var. minor C.K.Schneid.
  • Cercocarpus betulifolius var. typicus C.K.Schneid.
  • Cercocarpus betuloides subsp. blancheae (C.K.Schneid.) Thorne
  • Cercocarpus betuloides subsp. macrourus (Rydb.) A.E.Murray
  • Cercocarpus betuloides subsp. traskiae (Eastw.) A.E.Murray
  • Cercocarpus betuloides var. alnifolius (Rydb.) Dunkle
  • Cercocarpus betuloides var. macrourus (Rydb.) Jeps.
  • Cercocarpus betuloides var. multiflorus Jeps.
  • Cercocarpus douglasii Rydb.
  • Cercocarpus macrourus Rydb.
  • Cercocarpus montanus subsp. blancheae (C.K.Schneid.) Thorne
  • Cercocarpus montanus var. blancheae (C.K.Schneid.) F.L.Martin
  • Cercocarpus montanus var. glaber (S.Watson) F.L.Martin
  • Cercocarpus montanus var. macrourus (Rydb.) F.L.Martin
  • Cercocarpus montanus var. traskiae (Eastw.) F.L.Martin
  • Cercocarpus parvifolius var. betuloides (Nutt.) Sarg.
  • Cercocarpus parvifolius var. glaber S.Watson
  • Cercocarpus traskiae Eastw.

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.