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Morphology

H, 15-30 cm

Ecology

Hill zone, steppe

Chorology

Rocky Mountains

Xylem

Distinct rings, semi-ring porous, vessels solitary and in groups, vessels small (20-30 microns) vessels thick walled (2 microns), paratracheal parenchyma, parenchyma thin walled between fibers, thick walled intra-annual fibre bands, rayless, crystals absent.

Xylem-Code

See annex

Phloem

Uniform anatomy, groups of sieve cells and parenchyma in radial rows, without crystals.

Remarks

Cross section:
Tangential section:
Radial section:
Bark:

Cottonwood- Pass, Colorado, USA

Explanations

For explanations please see the Feature Characteristics.

Cross section
   
Tangential section
 

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

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