Taxon  Report   8171 
Tsuga mertensiana  (Bong.) Carriere
Black hemlock,  Hemlock spruce, Mountain hemlock, Patton spruce, Sierra hemlock, Western hemlock
Tsuga mertensiana
© 2002 Monty Rickard
Click on a photo to see it bigger.
Tsuga mertensiana
© 2007 Dr. Mark S. Brunell
Tsuga mertensiana
© 2005 Dr. Mark S. Brunell
Tsuga mertensiana, a gymnosperm, is a tree that is native to California and is also found elsewhere in North America and beyond.

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Tsuga mertensiana
© 2007 Neal Kramer
Family: PINACEAE  
Genus: Tsuga
Subalpine Forest
Habitat: slopes
Wetlands: Occurs usually in non wetlands, occasionally in wetlands
Name Status:
Accepted by TJM2 + PLANTS + JM93
Alternate Names:
(according to)

ICPN: Tsuga crassifolia
More information about  Tsuga mertensiana
Nursery / seed vendor availability from CNPLX
This plant is available commercially.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Feb 20, 2018).

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