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Morphology

N , 100-300cm

Ecology

arid desert

Chorology

W-North America

Xylem

Distinct rings, semi-ring to ring porous, vessels solitary, simple perforation, vessel diameter 40-70 µm, fibers with large pits, fibers thin-to thick-walled, parenchyma apotracheal, rays uni and biseriate, heterocellular with prostrate cells and heterocellular with 1 row of upright cells.

Xylem-Code

See annex

Phloem

With tangential arranged groups of sieve tubes and collapsed rows of sieve tubes, with prismatic crystals, multilayered periderm with regular arranged cells.

Explanations

For explanations please see the Feature Characteristics.

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

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