Collection

(1) Collection [ Taxonomy ]
Abbreviation: colln.

Dictionary of botanic terminology - index of names


	The collection is the act or process of collecting or of gathering scientific samples (for example plants specimens) to be seen, studied, classified, nominated or kept together

(2) Collection


	Also applied to the act of collecting wild plants for traditional uses (like medicinal plants or wild fruit) or for resale (like wholesale of rare and valuable plants coveted by collectors)

The act of collecting rare plants and animals in excess is called over-collection, it may be a serious threat to wild plants and habitats.

(3) Collection


	A collection is any group of items held by collector, museums and institution that has one or more properties in common. For example a collection of plants, stamps, paintings etc. Which are collected, showed or studied for their interest, value, or beauty.

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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