Coalescence

Coalescence [ Botany - Morphology] Adjective: Coalescent

Dictionary of botanic terminology - index of names


	*The union of diverse organs or parts into one body or form or group; the growing together of parts.*

To coalesce
Transitive and intransitive verb: (past and past participle coalesced, present participle coalescing, 3rd person present singular coalesces)

To merge or cause things or parts to merge into a single body or group

From Latin verb "coalescere " "grow up together"

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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