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Morphology

c 20-40 cm

Ecology

hyperarid zone

Chorology

Sahara

Xylem

Distinct rings, semi-ring porous, diffuse porous, vessels solitary, simple perforation, vessel diameter 20 - 50µm, fibers thin-to thick-walled, apotracheal parenchyma, rays width one to 3 prostrate cells.

Xylem-Code

See annex

Phloem

Bark with a belt of thick-walled sclereids.

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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