Asclepias tuberosa L.

Asclepiadaceae


Morphology

Hemicryptphyte

Ecology

hill zone

Chorology

North America

Xylem

Rings indistinct, diffuse porous, vessels solitary, simple perforations, thin-walled fibers, apotracheal and paratracheal parenchyma, uniseriate rays and rays with up to 10 cells with upright cells. Crystal druses in parenchyma. Small groups of sieve cells in parenchyma

Xylem-Code

See annex

Phloem

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

Remarks

Michigan,USA, Pickney Park Oldfield

Explanations

For explanations please see the Feature Characteristics.

Cross section
     
Tangential section
 
Bark
  

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