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Morphology

Z, parasite, on 20-30 cm

Ecology

desert, dry site

Chorology

SW.North America

Xylem

Distinct rings (polarized light), diffuse porous, vessels in long radial rows, simple perforation, gash-like and scalariform vessel pitting, vessel diameter in earlywood 30µm, fiber pits minutely bordered, fibers very thick-walled, apotracheal and paratracheal parenchyma, most parenchyma cells with nuclei, ray width 1-8, all ray cells upright, often confluent to axial parenchyma, thick-walled ray cells, crystals prismatic and in druses.

Xylem-Code

See annex

Phloem

With sieve cell groups above the vessel/fiber strips. Old sieve cells not collapsed, groups of sclereids in cortex. Prismatic crystals and crystal cruses present.

Explanations

For explanations please see the Feature Characteristics.

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

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