N , 100-300cm
Distinct annual rings, ring porous, vessels in the latewood in radial groups, earlywood vessel diameter 100 – 150 mm, latewood vessel diameter 40-60 mm, vessel frequency 100-200 mm2, simple perforations, with helical thickenings. With vascular tracheids, fibers thin-to thick-walled, with tension wood, with small pits, paratracheal scanty parenchyma, ray width 1-2 cells, rays heterocellular with 1-3 upright marginal cells, with oil ducts in rays.
With small groups of sieve tubes, sclerenchyma in groups and thick tangential bands, with prismatic crystals and oil ducts.
For explanations please see the Feature Characteristics Volume 1.
© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010