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Morphology

Ch 10-90 cm

Ecology

subalpine and alpine

Chorology

Eurosibirean/N.-American

Xylem

Distinct rings, semi-ring-porous, vessels uniseriate and in groups mostly simple, rarely scalairform perforations with 5-8 bars, with fine helical thickenings, intervessel pits round, vessel diameter 15-40 µm, vessel frequency 200 - 300 mm2, fibers with large pits, fibers thin-to thick-walled, parenchyma not to recognize, rays 1-3 seriate, heterocellular with prostrate and a few with upright cells.,

Xylem-Code

See annex

Phloem

Uniform structure.

Explanations

For explanations please see the Feature Characteristics.

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

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