subalpine, alpine, medium site
Rings indistinct, vessels in groups, vessel diameter <20 µm, vessels with simple perforations and small round pits, fibers absent or living fibers, parenchyma pervasive, vascular bundles rayless, very large rays (extrusions from the pith) between the bundles, ray cells exclusively square and upright.
Simple construction of the phloem
For explanations please see the Feature Characteristics.
© 2005 WSL - F. Schweingruber, W. Landolt, last update 18.11.2010