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Ball shaped [ Botany ]

Dictionary of botanic terminology - index of names

Synonym: Globose, Spherical, Globular, Rounded, Ball-like
     
  Globose means having a rounded form resembling that of a sphere or ball.  
     
A ball-shaped or nearly globular part or organ of a plant
(For examples pollen granules, fruits, or seeds)



◄Left: Shapes based on the sphere and ellipsoids, distinguished by the ratio of a:b.

  1. Globose or spherical
  2. Subglobose or prolate spheroidal
  3. Broadly ellipsoidal (sub-prolate) to ellipsoidal (prolate)
  4. Oval (per-prolate)
  5. Fusiform
     
 Ball shaped  [ Morphology ]
Synonym:
Spherical habit, Globose habit
The globose habit (or ball-shaped) is one of the most common vegetative features or habit  frequently observed in cacti and succulents characterized by spherical stems.

 

Two globose cacti: Echinocactus grusonii and Epithelantha micromeris

 


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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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