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Needle flavonoids and population differentiation in the Abies section Nobilis Engelm
(1985)
The Abies section Nobilis Engelm. consists of two high-elevation
tree species that grow in the mountains of Washington, Oregon and
California. The two varieties of A.magnifica A.Murray grow south of
A.procera Rehd. One ...
Morphological variation in subalpine fir and its relationship to balsam fir in western Canada and the United States
(1988)
To help clarify the taxonomy of the two closely related North American firs
subalpine fir {Abies lasiocarpa (Hook.) Nutt.) and balsam fir {Abies balsamea
(L.) Mill.) in western Canada and the United States, 10 populations ...