Alpine, dry initial site
Distinct rings, semi-ring porous, vessels in radial multiples, vestured pits, tangential bands with thick walled fibers, paratracheal parenchyma, thin walled parenchyma between vessels, ray width >10 cells, often confluent to fiber tissue.
Indistinct tangential layers of collapsed sieve cells, radial rows of parenchyma cells, distinct ray dilatations.
For explanations please see the Feature Characteristics.
© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010