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Morphology

shrub, 1-2m

Ecology

hill and mountain zone, medium site

Chorology

Western North America

Xylem

Distinct rings, semi-ring porous, vessels solitary, simple perforations, spiral thickenings, earlywood vessel diameter 20 - 30µm, fibers thin to thick-walled, parenchyma absent or not to recognize, ray width 2-3 cell, all ray cells prostrate, ray height >1mm, crystals absent.

Xylem-Code

See annex

Phloem

Tangential layers of collapsed sieve cells, tangential groups of sclerenchymatic cells, annual? tangential cracks, crystals absent.

Explanations

For explanations please see the Feature Characteristics.

© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010

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