Rhynchostylis retusa

 Rhynchostylis retusa

Rhynchostylis retusa                                                                                                                                                       photo  C. Solimbergo
   
taxonomy described by (Linnaeus) von Blume, Carl Ludwig
  published in        Bijdragen tot de Flora van Nederlansch Indië  7 : 286    1825
     
  family Orchidaceae
  subfamily Epidendroideae
  tribe  Vandeae
  subtribe Aeridinae
  genus Rhynchostylis  Blume 1825
     
  metabolism CAM pathway, stomata of the leaves are open at night.
    (K.Silvera, L.S. Santiago, J.C. Cushman, K. Winter - International Symposium on Plant Biology, August 2013)
    it is useful give the soluble mineal nutriens, on the roots.
     
native of origins forests in Bangladesh, India (Nadugani, Darjeeling, Kalimpong, Andamane Is.), Sri Lanka,
    Nepal, Burma, Laos, Thailand, Cambodia, Viet Nam (Ninh Thuan, Tay Ninh), China (Guizhou, Yunnan),
    Indonesia (Java, Sumatra), Malaysia (Borneo), The Philippines
  altitude  13 - 1400 m (43 - 4620 ft)
  habitat climate informations from Kandy (Central Province, Sri Lanka)
    Köppen climate classification : Af, humid tropical climate of the rainforest
    (without a winter season, more and abundant rainfall)
    the weather station data (temperatures are calculated for an altitude of 700 m / 2310 ft) :
    Rhynchostylis retusa b gr uk
  photoperiod in Kandy this orchid bloom with a photoperiod, that varies during the year, from 12 h 29 m' to 11 h 31 m'
  life form epiphyte
  brightness    partial shade
     
inflorescence     length 35 - 40 cm (14" - 16"), axillary
  nr flowers 90 - 100, fragrants
  size single flower  2.5 L 2.5 cm  (1" L 1") - inflorescence  29 L 6 cm  (11.6" L 2.4")
  duration inflorescence20 - 30 days
  time to bloom from birth, ≈ 60 days
     
CITES appendix II

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