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Morphology

C, 50-80cm

Ecology

tropical

Chorology

Philipines

Xylem

Rings absent, vessels solitary, vessel diameter 50-100 mµ, simple perforations, intervessel pits round, fibers thick walled, with distinct small round pits, parenchyma in uniseriate tangential bands, rays uni-and biseriate with quadrangular and upright cells,

Xylem-Code

See annex

Phloem

Under the epidermis are thin walled parenchymatic cells (assimilating tissue). Below is a belt with central vascular bundles (phloem in the center), embedded in slightly sclerotised cells. An endodermis delimits the cortex from the cork zone consisting square, pitless prismatic (shoe box like) cells. This zone arise from the pericycle zone, which consists mainly of spirally thickened, very long, unlignified cells. The phloem consist on radial grouped sieve cells and parenchyma and spiral cells.

Explanations

For explanations please see the Feature Characteristics.

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

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