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Morphology

N 80-150

Ecology

hill and mountain

Chorology

W-North America

Xylem

Distinct rings, diffuse-porous, vessels solitary, perforations scalariform with 6-10 bars, intervessel pits scalariform, ray-vessel pits with enlarged horizontal apertures, with helical thickenings, vessel diameter 15-30 µm, vessel frequency 400 - 700 mm2, fibers with large pits, fibers thin-walled, with septate fibers, parenchyma not to recognize, rays uniseriate, homocellular with upright cells and 3-8 seriate homocellular with prostrate and upright cells, sometimes with sheet cells,

Xylem-Code

See annex

Phloem

With radial groups of sieve-tubes.

Explanations

For explanations please see the Feature Characteristics.

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

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