Thuja plicataDonn ex D.Don

western redcedar

WFO wfo-0000407856 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Thuja plicata, photographed by Jens-Christian Svenning
fig. a Jens-Christian Svenning, CC BY 4.0 / 2022-06-06 / obs. 204033317

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.

Also published as 20 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.

  • Libocedrus craigiana H.Low ex Gordon
  • Libocedrus gigantea H.Low ex Gordon
  • Thuja asplenifolia Carrière
  • Thuja californica K.Koch
  • Thuja douglasii Nutt. ex Parl.
  • Thuja flabellata Beissn.
  • Thuja gigantea Nutt.
  • Thuja gigantea var. atrovirens Gordon
  • Thuja gigantea var. pendula Beissn.
  • Thuja lobbiana Gordon
  • Thuja lobbii Gordon
  • Thuja lycopodioides Beissn.
  • Thuja menziesii Douglas ex Endl.
  • Thuja menziesii var. fastigiata Carrière
  • Thuja occidentalis var. plicata (Donn ex D.Don) Loudon ex Hoopes
  • Thuja plicata f. atrovirens (Gordon) O.L.Lipa
  • Thuja plicata f. fastigiata (Carrière) C.K.Schneid.
  • Thuja plicata f. pendula (Beissn.) Rehder
  • Thuja plicatilis Beissn.
  • Thuja wareana Lodd. ex Loudon

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.