An Anatomical Method for Differentiating Woods of Western and Mountain Hemlock A Research Note
Keywords:
Anatomy, western hemlock, mountain hemlock, wood identificationAbstract
The presence of styloid crystals in ghost cells or tracheary cells marginal to the rays in the last-formed latewood of mountain hemlock [Tsuga mertensiana (Bong.) Carr.] has proved to be a means of separating the wood of this species from that of western hemlock [T. heterophylla (Raf.) Sang.].References
Bannan, M. W. 1934. Origin and cellular characteristics of xylem rays in gymnosperms. Bot. Gaz. 96(2):260-281.nTaylor, R. J. 1972. The relationship and origin of Tsuga heterophylla and Tsuga mertensiana based on phytochemical and morphological interpretations. Am. J. Bot. 59(2): 149-157.nWestern Wood Products Association. 1979. Standard grading rules for western lumber. WWPA, Portland, OR, 216 pp.n
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