hill and mountain zone, medium site
Secondary growth absent. Single vascular closed bundles arranged around the pith. Vessels in groups, vessel diameter 15¿50 µm, perforations simple, intervessel pits round to mostly slit-like or scalariform, fibers absent, parenchyma pervasive, rays absent inside vascular bundles, between them very large rays with thin-walled, unlignified cell walls.
Mostly uniform, sometimes with a few smaller sieve-cells
For explanations please see the Feature Characteristics Volume 1.
© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010