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Morphology

tree 4 m

Ecology

arid zones, salt tolerant

Chorology

Africa, middle East

Xylem

Distinct rings, ring porous, vessels solitary and in groups, simple perforations, intervessel pits round, fibers thin to thick-walled, paratracheal and marginal parenchyma, ray width >10 cells, homocellular with procumbent cells. Storied parenchyma and fibers and vessels, with few prismatic crystals in rays.

Xylem-Code

See annex

Phloem

Sieve cells between parenchyma cells. They are compressed in older rings. Half-moon-like groups of sclerenchyma, arranged in tangential direction in the phloem. Rays sclerotisised with annual? gaps. Crystals absent. Phellogen gets active after two years.

Explanations

For explanations please see the Feature Characteristics.

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

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