Mountain and subalpine, medium site
Western North America
Indistinct rings, semi-ring porous, vessels solitary and in small groups, vessel diameter 20 ¿ 50µm, vessel frequency 100-200 mm2, vessel frequency 200-500 mm2, simple perforations, gash-like vessel- pits thin walled fibers in local, tangential small bands , pervasive parenchyma, rays mostly uniseriate, with a few with 3-4 cells, rays with exclusively upright cells.
Uniform phloem and cortex, with few glassy silica bodies.
For explanations please see the Feature Characteristics.
© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010