Tsuga mertensiana ssp. mertensiana var. jeffreyi

Pinaceae Tsuga mertensiana ssp. mertensiana var. jeffreyi (A.Henry) C.K.Schneid.

Etymology
Tsuga refers to the Japanese name for this tree.
mertensiana refers to the plant collector K. H. Mertens.
jeffreyi refers to the plant collector J. Jeffrey.

Colloquial Name
Jeffrey’s mountain hemlock

Subordinate Taxa
There exist 3 subordinate taxa for Tsuga mertensiana:

Distribution

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TDWG Codes
7, 71, BRC

Habitat
The natural habitats for Tsuga mertensiana ssp. mertensiana var. jeffreyi are temperate forests. The natural elevation is unknown. There are no conifers associated with Tsuga mertensiana ssp. mertensiana var. jeffreyi that are known of.

USDA Hardiness zone – 4
Tsuga mertensiana ssp. mertensiana var. jeffreyi is hardy to USDA Zone 4 (Bannister & Neuner, 2001), meaning its frost tolerance lies somewhere in the range of -34.4C (-30F) to 28.9C (-20F).

Species Continuity
The population trend for Tsuga mertensiana ssp. mertensiana var. jeffreyi is unknown. There are no known threats for Tsuga mertensiana ssp. mertensiana var. jeffreyi.

IUCN Category – DD
According to the IUCN Red List, Tsuga mertensiana ssp. mertensiana var. jeffreyi has been assigned the status of DD(Data Defficient). This means that according to the Red List criteria, not enough data has been obtained about its abundance and/or distribution.

Superordinate Taxa
The nearest superordinate taxon for Tsuga mertensiana is Tsuga. The coordinate taxa for Tsuga mertensiana are therefore:

Tsuga mertensiana ssp. mertensiana var. jeffreyi is further placed under Abietoideae. Tsuga mertensiana ssp. mertensiana var. jeffreyi is also placed under Pinaceae.