Betula pendula Roth

Betulaceae


Morphology

P 3-10 m

Ecology

boreal forest

Chorology

eurosibirean

Xylem

Distinct rings, diffuse porous, vessels 30-70 ┬Ám in diameter, vessels in radial multiples ray-vessel pits with very small apertures, scalariform perforations with >10 bars, fibers thin to thick walled, fibers with small pits, with tension wood, parenchyma apotracheal-diffuse, rays homocellular, rays 1-3-seriate with prostrate cells.

Xylem-Code

See annex

Phloem

Uniserate layers of sieve-tubes an parenchyma cells, tangential bands of sclereids in cortext and phloem, with crystal druses. Dense phellem with regularly arranged rectangular cells.

Explanations

For explanations please see the Feature Characteristics.

Cross section
   
Tangential section
 
Bark
    

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