Rhynchostylis gigantea

Rhynchostylis gigantea 01

Rhynchostylis gigantea 1                                                                                                                                                photo C. Solimbergo

Rhynchostylis gigantea 02

Rhynchostylis gigantea 2                                                                                                                                                 photo C. Solimbergo

Rhynchostylis gigantea pink

 Rhynchostylis gigantea forma pink spot                                                                                                                     photo C. Solimbergo

Rhynchostylis gigantea orange

Rhynchostylis gigantea forma orange                                                                                                                           photo C. Solimbergo
taxonomy described by (Lindley)  Ridley, Henry Nicholas
  published in        Journal of the Linneaen Society , Botany  32 : 356    1896
  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 deciduous or semi-deciduous forests in India, Burma, Thailand, Laos, Cambodia, Viet Nam (Dak Lak,
    Quang Binh, Tay Ninh), China (Hainan), Malaysia (Borneo, Sabah, Malaya, Kudat, Malaya Peninsula,
    Balambangan Islads), The Philippines
  altitude 13 - 850 m  (43 - 2800 ft)
  habitat climate informations from Buon Me Thout (Dak Lak, Viet Nam)
    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 450 m / 1500 ft) :
    Rhynchostylis gigantea 1 b gr uk 
  photoperiod in Buon Me Thout this orchid bloom with a photoperiod, that varies during the year, from 12 h 50 m' to 11 h 10 m'
  life form epiphyte
  brightness    partial shade
inflorescence     length 28 - 30 cm  (11.2" - 12"), axillary
  nr flowers 30 - 37
  size single flower  2 L 2.6 cm  (0.8" L 1.04") - inflorescence  19 L 8 cm  (7.6" L 3.2")
  duration inflorescence  ≈ days
  time to bloom from birth, ≈ 90 days 
CITES appendix II

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