Morphology

shrub, 1-2m

Ecology

hill zone

Chorology

N-American

Xylem

Distinct rings, semi-ring porous, vessels in diagonal patterns, simple perforations, fine spiral thickenings, earlywood vessel diameter 30 - 50µm, fibers mostly thick-walled, with few fiber tracheids, parenchyma absent or not to recognize, ray width 4-10 cell, all ray cells prostrate, ray height >1mm, crystals absent.

Xylem-Code

See annex

Phloem

Tangential layers of collapsed sieve cells, few groups of sclerenchymatic cells in rays, annual? tangential cracks, crystals absent

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