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Morphology

T, 1 - 4 cm

Ecology

alpine, medium site

Chorology

Arctic- Alpine

Xylem

Only on ring, vessels solitary ,often in transversal section not to recognize,, vessel diameter <20 µm, parenchyma no to recognize, rayless. No phloem in pith.

Xylem-Code

See annex

Phloem

Tangential layers of sieve cells.

Remarks

Furka Pass, Valais, Switzerland, 2500m

Explanations

For explanations please see the Feature Characteristics.

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

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