Halophyte

Halophyte [ Botany - Ecology ]

Dictionary of botanic terminology - index of names


	A plant adapted to grow in salty environments, it can tolerate an abnormal amount of salt in its growing mediai and in the water .

An halophyte is a plant that accumulates a high concentration of salt in its tissues. Some halophytes are almost succulent (e.g. Salicornia europaea). Halophytes are plants that stay alive in water with more than 0.5% NaCl. A small amount of halophytes evolved convergently in numerous, related families. Xerohalophytes are the desert species of halophytes. (Compare with Mesophytes, Hydrophytes , Xerophytes and Xerohalophytes).

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Holdfast roots [ Botany ]
Dictionary of botanic terminology - index of names

Some species of climbing plants develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place.

Climbing plants, like the poison ivy (Toxicodendron radicans), Boston ivy (Parthenocissus tricuspidata), and trumpet creeper (Campsis radicans), develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the Holdfast roots die at the end of the first season, but in some species they are perennial. In the tropics some of the large climbing plants have hold-fast roots by which they attach themselves, and long, cord-like roots that extend downward through the air and may lengthen and branch for several years until they strike the soil and become absorbent roots.

Major references and further lectures:
1) E. N. Transeau “General Botany” Discovery Publishing House, 1994