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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Hydathode
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1992-09-02
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A specialized pore, or less commonly, a hair,
through which water is secreted by
hydrostatic pressure from the interior of a
plant leaf onto the surface. Hydathodes are
found on many different plants and are
usually situated around the leaf margin at
vein endings. Each pore is surrounded by two
crescent-shaped cells and resembles an open
stoma, but the size of the opening cannot be
varied as in a stoma. The process of water
secretion through hydathodes is known as
guttation.