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Morphology

c 20-40 cm

Ecology

hyperarid zone

Chorology

Sahara

Xylem

Only one ring, vessels solitary, in tangential rows, simple perforation, vessel diameter 20 - 50µm, fibers thin-to thick-walled, apotracheal parenchyma, rays width 2-3 upright cells.

Xylem-Code

See annex

Phloem

Distinct ray dilatations, radial groups of sclereids in cortex. Many crystal druses present.

Explanations

For explanations please see the Feature Characteristics.

Cross section
   
Tangential section
 
Radial section
 
Bark
 

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

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