Tsuga mertensiana(Bong.) Carrière

mountain hemlock

WFO wfo-0000456459 Accepted WFO 2026-06 7 photographs CC0 / CC BY

Plate 1 figs. a–g

Tsuga mertensiana, photographed by Matt Muir
fig. a Matt Muir, CC BY 4.0 / 2022-05-30 / obs. 204140672
Tsuga mertensiana, photographed by Alexander Wentworth
fig. b Alexander Wentworth, CC BY 4.0 / obs. 194548522
Tsuga mertensiana, photographed by Todd Huang
fig. c Todd Huang, CC BY 4.0 / obs. 180742316
Tsuga mertensiana, photographed by Zac Peterson
fig. d Zac Peterson, CC BY 4.0 / obs. 178657002
Tsuga mertensiana, photographed by er-birds
fig. e er-birds, CC BY 4.0 / obs. 166373180
Tsuga mertensiana, photographed by Henrik Kibak
fig. f Henrik Kibak, CC BY 4.0 / obs. 169183950
Tsuga mertensiana, photographed by Henrik Kibak
fig. g Henrik Kibak, CC BY 4.0 / obs. 164847883

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 31 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.

  • Abies hookeriana A.Murray bis
  • Abies mertensiana (Bong.) Lindl. & Gordon
  • Abies pattoniana J.Jeffrey ex Balf.
  • Abies pattonii Jeffrey ex Gordon
  • Abies taxifolia J.Jeffrey ex Gordon
  • Abies williamsonii Newb.
  • Hesperopeuce mertensiana (Bong.) Rydb.
  • Hesperopeuce pattoniana (J.Jeffrey ex Balf.) Lemmon
  • Picea californica Carrière
  • Picea hookeriana (A.Murray bis) Bertrand
  • Picea mertensiana Gordon
  • Pinus hookeriana (A.Murray bis) W.R.McNab
  • Pinus mertensiana Bong.
  • Pinus pattoniana (J.Jeffrey ex Balf.) Parl.
  • Tsuga crassifolia Flous
  • Tsuga hookeriana (A.Murray bis) Carrière
  • Tsuga mertensiana f. argentea (Beissn.) Rehder
  • Tsuga mertensiana subsp. crassifolia (Flous) Silba
  • Tsuga mertensiana var. macrophylla Beissn.
  • Tsuga pattoniana (J.Jeffrey ex Balf.) Engelm.
  • Tsuga pattoniana f. argentea Beissn.
  • Tsuga pattoniana var. hookeriana (A.Murray bis) Lemmon
  • Tsuga pattoniana var. typica A.Henry
  • Tsuga pattonii Coville

and 7 more.

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.