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Curtis, Lersten, and Nowak 2002 rev. 2015
wood with mature vessel and simple perforation plate.
stem with two large cortical parenchyma cells, primary pit fields, and metaxylem with lateral perforation plate.
Xylem vessel element and fibers.
xylem vessel elements.
maceration: two xylem vessel elements (SEM).
(willow) vessel element.
(oak) xylem with vessel elements and fibers.
vessel element, focus higher.
vessel element, focus lower.
maceration: xylem vessel element with two perforation pates at one end (SEM).