Helianthemum croceum (Desf. Pers.

Cistaceae


Morphology

Z, 5-20 cm

Ecology

subalpine and alpine

Chorology

SW-European

Xylem

Distinct rings, diffuse to semi-ring-porous, vessels solitary vessel diameter 20-30┬Ám vessel frequency 200-300 mm2, simple perforations, fibers thick-walled, with large pits, parenchyma apotracheal and scanty paratracheal, rays uni-seriate, homocellular with square or upright cells.

Xylem-Code

See annex

Phloem

Sclerenchyma cells in irregular groups in tangential layers,. With crystal druses.

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