Rhynchostylis gigantea var rubrum

Rhynchostylis gigantea rubrum

Rhynchostylis gigantea var. rubrum                                                                                                                            photo  C. Solimbergo
taxonomy described by       (Lindley) Ridley, Henry Nicholas
  published in Journal of the Linnean Society , Botany  32 : 356    1896
var. rubrum   color variation
  described by Sagarik, Rapee
  family Orchidaceae
  subfamily Epidendroideae
  tribe Vandeae
  subtribe Aeridinae
  genus Rhynchostylis  Blume 1825
  chromosomes  2n = 38 
  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 western Thailand (Prachin Buri)
  altitude 0 - 500 m ? (1650 ft ?)
  habitat climate informations from Kabin Buri (Prachin Buri, Thailand) 
    Köppen climate classification : Aw, tropical savanna climate (with a dry season and a rainy season)
    the weather station data (temperatures are calculated for an altitude of 250 m / 825 ft) :
    Rhynchostylis gigantea rubrum b gr uk
  photoperiod in Kabin Buri this orchid bloom with a photoperiod, that varies during the year, from 12 h 54 m' to 11 h 06 m'
  life form epiphyte
  brightness    partial shade
inflorescence     length 10 - 12 cm  (4" - 4.8"), axillary
  nr flowers 12 - 14
  size single flower  2.5 L 3,5 cm  (1" L 1.4") - inflorescence  16 L 8 cm  (6.4" L 3.2")
  duration inflorescence30 - 40 days
  time to bloom from birth, ≈ 60 - 70 days
CITES appendix II


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