Euphorbia calyptra Cosson et DR.

Euphorbiaceae


Morphology

Z, 30-50 cm

Ecology

hyperarid zone

Chorology

Sahara

Xylem

Indistinct rings, vessel in tangential and radial multiples, simple perforations, vessel diameter 30-70 ┬Ám, scalariform intervessel pits, fibers thin-to thick-walled, rare paratracheal parenchyma, round and scalariform vessel-ray pits, mostly homocellular rays with upright cells, rarely heterocellular with a few prostrate cells.

Xylem-Code

See annex

Phloem

Indistinct ray dilatations, with radial sclerenchymatic groups with lactifers.

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