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Rainy season  Climatology ]

Dictionary of botanic terminology - index of names

Synonym: Humid season, Wet season, Monsoon season
     
  One of the two seasons in tropical climates, an annually recurring period of one or more months during which no precipitations  are common; the opposite of dry season.  

The rainy season  (also called monsoon season, humid season or wet season), is a term commonly used when describing the weather in the tropics. The year is split into the dry season and the wet season . As the name implies, nearly all the rainfall in a year occurs during the wet season. Typically, days start off hot and sunny, with humidity building during the day and culminating in large thunderstorms and torrential rain in the afternoon or evening. This promotes plant growth.

 


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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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