Asclepias suvberticillata (Grey) Vail

Asclepiadaceae


Morphology

Hemicryptophyte 30cm

Ecology

mountane

Chorology

North America

Xylem

Rings distinct, semi-ring porous, vessels solitary or in groups, simple perforations, thin-walled fibers, apotracheal and paratracheal parenchyma, uniseriate and biseriate rays with upright cells. Druses in pith. Few groups of sieve cells at the beginning of secondary xylem.

Xylem-Code

See annex

Phloem

With groups of sclereids, With crystal druses in cortex and phloem.

Remarks

In sagebrush steppe, Grand Junction Colorado, USA

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