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Morphology

H, 10-20cm

Ecology

subalpine, alpine, dry site

Chorology

subalpine, alpine, dry site

Xylem

Distinct rings, semi-ring porous, vessels solitary and in small clusters, vessel diameter <25-30mµ, scalariform perforations with 1-3 bars, vessel frequency 200-500 mm2, scalariform vessel-pitting, fibers with smallround pits (fiber tracheids), parenchyma mostly paratracheal or pervasive, rays very large and confluent to the vessel/bire strips, the vessel/fibere tissue remains as small radial strips. Crystal druses in the rays, absent in the vessel/fiber strips.

Xylem-Code

See annex

Phloem

Uniform phloem and cortex. Circle of cells with dark substances. Phloem, cortex and pith with many crystal druses.

Explanations

For explanations please see the Feature Characteristics.

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

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