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Transverse section through the aerial root of an epiphytic orchid
	- Large (181 Kb) - Scroll down to information With labels Legend: 1 velamen 3 vascular cylinder 2 cortex
English name: Orchid Scientific name: Oncidium sp. Familia: Orchidaceae Classis: Monocotyledonas Phylum: Angiospermae Regnum: Plantae
The thick cell walls of the velamen also give mechanical protection for the cortex. The velamen also plays a role in water absorption.

last modified: 5 Jun 2014