Dendrobium bracteosum var. roseum

Dendrobium bracteosum

Dendrobium bracteosum var. roseum                                                                                                                           photo C. Solimbergo
taxonomy        described by Reichenbach, Heinrich Gustav
  published in      The Gardeners' Chronicle & Agricultural Gazette  2 : 809    1886
var. roseum described by Sander, Henry Frederich Conrad
  published in  Sander's Orchid Guide  68    1901
  family Orchidaceae
  subfamily Epidendroideae
  tribe Malaxideae
  subtribe Dendrobiinae
  genus Dendrobium Swartz 1799
  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 rainforest, on mangrove trees, often along rivers or the coast of Papua (Noord River, Maluku Islands)
Rossel Island, New Ireland, Port Praslin, Punam, Sepik River, Aitape), Irian Jaya
  altitude  0 - 881  (1200) m  (0 - 2907 (3960) ft)
  habitat climate informations from Ambunti (East Sepik, Papua)
    Köppen climate classification : Af, humid tropical climate of the rainforest
    (no winter season, more abundant rainfall)
    the weather station data (temperatures are calculated for an altitude of 450 m / 1485 ft) :
    Dendrobium bracteosum a gr uk
  photoperiod in Ambunti this orchid bloom with a photoperiod, that varies during the year, from 12 h 16 m' to 11 h 44 m'
  life form epiphyte
  brightness    partial shade
inflorescence    length 1 cm (0.4"), from the upper nodes
  nr flowers 6 - 8, fragrants
  size single flower  2 L 2 cm  (1" L 1") - inflorescence  4 L 5 cm  (1.6" L 2")
  duration inflorescence120 - 150 days
  time to bloom from birth, ≈ 60 days  
CITES appendix II

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