BETULACEAE Alnus latissima

 

Transverse view 40X

This photo shows: growth rings distinct, notice how the growth ring dips where it crosses an aggregate ray; diffuse porous, vessels mostly solitary with doublets, 90 to more than 100 per sq. mm., m.t.d. 45-50 mc.; rays of two distinct sizes, exclusively solitary and aggregate.

Tangential view 100X

This photo shows solitary and aggregate rays.

Copyright© 2000-2002 by Ed Strauss. All  rights reserved.