back to the start page   |   back to the list                              


Morphology

P 5-10 m

Ecology

hill and mountain

Chorology

N-America

Xylem

Indistinct annual rings, vessels in radial groups and diagonal patterns, earlywood vessel diameter 60 – 80 mm, latewood vessel diameter 40-60 mm, vessel frequency 70-150 mm2, simple perforations. With vascular tracheids, fibers thin-to thick-walled, fibers with small pits, scanty and terminal paratracheal parenchyma, ray width 1-(2) cells, rays heterocellular with 1-3 upright marginal cells, with prismatic crystals in ray cells, with large oil ducts in rays.

Xylem-Code

See annex

Phloem

Tangential layers of parenchyma and sieve-tubes, with crystal druses and oil ducts.

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

                              back to the start page   |   back to the list