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Morphology

C 5-20 cm

Ecology

subalpine and alpine

Chorology

Alpine

Xylem

Distinct rings, diffuse-porous, vessels in radial to slightly diagonal groups, simple perforations, ray-vessel pits large, round, vessels surrounded by vasicentric tracheids, fibers thin-walled, with small pits, parenchyma apotracheal, in aggregates and terminal, rays uniseriate, homocellular with upright cells.

Xylem-Code

See annex

Phloem

With a few isolated fibers in groups, fibers unlignified and do not show up in polarized light, phellem cells in regular radial rows, with a few slime ducts.

Explanations

For explanations please see the Feature Characteristics.

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

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