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Rib structures in cells of the velamen
Legend:
1 velamen
2 wall thickening
English name: Orchid
Scientific name: Oncidium sp.
Familia: Orchidaceae
Classis: Monocotyledonas
Phylum: Angiospermae
Regnum: Plantae
The velamen is the multilayered epidermis of the aerial root of orchids. The thickened walls restrains desiccation.
