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Corrugated   [ Botany ]
Synonym: Crumpled

Dictionary of botanic terminology - index of names

Adjective: Corrugate or corrugated
Noun: Corrugation
Transitive and intransitive verb:  [ past and past participle corrugated, present participle corrugating, 3rd person present singular corrugates ]
 
     
  Shaped into wrinkles or folds, or alternate ridges and grooves.  
     
Used in botany to describe the shape or appearance of some surfaces and thin laminar structures irregularly folded in all directions, wrinkled (e.g. petals, leaf lamina, etc..)
Also describe the loose wrinkles along a margin, not flat, but on a smaller idea than undulated would imply.

For example imbricate petals are described as crumpled (corrugate) when puckered irregularly in the bud.
 
     

 


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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
   

 

 

 

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