Populus tremuloidesMichx.

quaking aspen

WFO wfo-0000928260 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Populus tremuloides, photographed by Barry Cottam
fig. a Barry Cottam, CC BY 4.0 / 2022-06-06 / obs. 203980630
Populus tremuloides, photographed by Stan Rullman
fig. b Stan Rullman, CC BY 4.0 / obs. 205882672
Populus tremuloides, photographed by Mary Krieger
fig. c Mary Krieger, CC BY 4.0 / obs. 205024857
Populus tremuloides, photographed by Jack Forrester
fig. d Jack Forrester, CC BY 4.0 / obs. 205852190
Populus tremuloides, photographed by Jack Forrester
fig. e Jack Forrester, CC BY 4.0 / obs. 205851441
Populus tremuloides, photographed by Lynn Harper
fig. f Lynn Harper, CC0 1.0 / obs. 205876850
Populus tremuloides, photographed by Jack Forrester
fig. g Jack Forrester, CC BY 4.0 / obs. 205830903
Populus tremuloides, photographed by Matt Pelikan
fig. h Matt Pelikan, CC BY 4.0 / obs. 203934962

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 = 443 observations

Peak flowering in Apr, from 443 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 12 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.

  • Populus aurea Tidestr.
  • Populus benzoifera Tausch
  • Populus pendula hort. ex Tausch
  • Populus pendula hort. ex Tausch
  • Populus polygonifolia F.G.Bernard
  • Populus tremula subsp. tremuloides (Michx.) Á.Löve & D.Löve
  • Populus tremuloides f. tremuloides
  • Populus tremuloides var. aurea (Tidestr.) Daniels
  • Populus tremuloides var. magnifica Vict.
  • Populus tremuloides var. tremuloides
  • Populus vancouveriana Trel. ex Tidestr.
  • Tremula trepida Raf.

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.