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Morphology

N , 100-300cm

Ecology

arid desert

Chorology

W-North America

Xylem

Distinct annual rings, diffuse-porous, thick-walled vessels solitary in short radial multipels, vessel diameter 80–160mµ, simple perforations, fibers with small pits, fibers thin to thick-walled, parenchyma paratracheal and in uniseriate terminal layers, rays uniseriate, homogeneous with prostrate cells, with a few prismatic crystals in rays.

Xylem-Code

See annex

Phloem

Groups of sieve tubes and parenchyma in tangential layers, tangentially arranged bands of thick-walled sclerenchyma. With prismatic crystals.

Explanations

For explanations please see the Feature Characteristics.

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

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