Consensus documents on the biology of trees

SAFETY ASSESSMENT OFTRANSGENIC ORGANISMS OECD CONSENSUS DOCUMENTS VOLUME 3 OECD 2010 

No subspecies or varieties are recognized for western white pine. Nonetheless, populations in the Sierra Nevada, Klamath and Warner mountains in the southern portion of its range have been observed to differ substantially from those farther north (Steinhoff et ah, 1983). 

Along the west coast of North America the species grows on Vancouver Island, on the adjacent mainland, southward through Washington and Oregon, and in the Cascade Mountains (Critchfield and Little, 1966). It is also found in the Siskiyou Mountains of southern Oregon and northern California, in the Sierra Nevada of California, and near Lake Tahoe, Nevada. 

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