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Morphology

shrub, - 1 m

Ecology

hill zone, dry site

Chorology

SW-N-American

Xylem

Distinct rings, diffuse and semi-ring porous, vessels in oblique, radial patterns, simple perforations, spiral thickenings, earlywood vessel diameter 15 - 30µm, fibers thin to thick-walled, parenchyma absent or not to recognize, ray width 2-3 cell, ray cells mostly square, , ray height >1mm. Prismatic crystals in rays

Xylem-Code

See annex

Phloem

Tangential layers of collapsed sieve cells, tangential groups of sclerenchymatic cells, annual? tangential cracks, tangential rows of prismatic crystals, prismatic crystals also in rays.

Explanations

For explanations please see the Feature Characteristics.

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

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