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Morphology

Z, parasite

Ecology

desert, dry site

Chorology

Southern North- America

Xylem

Indistinct rings (polarized light), diffuse porous, vessels in long radial rows, simple perforation, vessel perforation opposite and gash-like, vessel diameter in earlywood 30µm, fiber pits minutely bordered, fibers thick-walled, apotracheal parenchyma, ray width 1-8, often confluent to fiber tissue, all ray cells upright. with prismatic crystals.

Xylem-Code

See annex

Phloem

With sieve cell groups outside of vessel/fiber strips. Old sieve cells not collapsed, groups of sclereids in cortex. Prismatic crystals present.

Explanations

For explanations please see the Feature Characteristics.

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

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