| Home | E-mail | Cactuspedia | Mail Sale Catalogue | Links | Information | Search  |

 
 
 
Flower bud  [ Botany ]

Dictionary of botanic terminology - index of names

     
  An unopened bloom surrounded by its immature perianth segments before it begins to enlarge.  
     

After a flower is apparent, but before it emerges, it is called a flower bud, typically it is a swollen protuberance or outgrowth usually in the axil of a leaf or at the tip of a stem or branch.

It is a rudimentary or undeveloped flower containing flower primordia (Meristematic tissue that gives rise to all the parts of the flower) and is generally enclosed in protective overlapping scales or bracts.
Once formed, it may remain for some time in a dormant condition, or it may open immediately giving rise to one or more flower.
 

When a  bud contains simultaneously flower, leaf, and stem primordia; that will give rise to branch with leaves and flower(s) is called a Mixed bud.

In bud = having new buds that have not yet opened
     

 


Advertising



 

 

1


 
 
 
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
     

 

 

 

| Home | E-mail | Cactuspedia | Mail Sale Catalogue | Links | Information | Search  |