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Morphology

H, 10-20cm

Ecology

subalpine

Chorology

Rocky mountains

Xylem

Secondary growth absent. Single vascular closed bundles arranged around the pith. Vessels in groups, vessel diameter <20 µm, perforations simple, intervessel pits round to mostly slit-like or scalariform, fibers absent, parenchyma pervasive, rays absent inside vascular bundles, between them very large rays with thin-walled, unlignified cell walls.

Xylem-Code

See annex

Phloem

Mostly uniform, sometimes with a few smaller sieve-cells

Explanations

For explanations please see the Feature Characteristics.

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

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