Dendrobium violaceum subsp cyperifolium

Dendrobium violaceum 

Dendrobium violaceum subsp cyperifolium                                                                                                                photo C. Solimbergo
taxonomy      described by Kraenzlin, Friedrich Wilhelm Ludwig
  published in    Das Pflanzenreich  108    1910
subsp cyperifolium     described by (Schlechter)  Reeve, Thomas M.  &  Woods, Patrich James Blythe
  published in  Notes from the Royal Botanic Garden, Edimbirgh  46 : 236    1989
  family Orchidaceae
  subfamily Epidendroideae
  tribe Malaxideae
  subtribe Dendrobiinae
  genus  Dendrobium Swartz 1799
  chromosomes   2n = 38 

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 orizontal branches of primary forests, Papua (Sepik, Enga, Finisterre Range, West Nassau Mountains,
    Nepesip, Nondugl, Erl River, Korombi, Mt. Aigeget), Indonesia (Irian Jaya, Milne Bay, Mt. Jaya,
    Mt. Castensz, Cyclop Mountains, Wissel Lake)
  altitude 750 - 2300 m  (2475 - 7590 ft)

climate informations from Laiagam (Enga, 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 1500 m / 4950 ft) :
    Dendrobium violaceum a gr uk
  photoperiod in Laiagam this orchid bloom with a photoperiod, that varies during the year, from 12 h 21 m' to 11 h 39 m'
  life form epiphyte or litophyte
  brightness    partial shade
inflorescence     length 1 cm (0.4"), from the upper nodes

nr flowers

1 - 2
  size single flower  3.5 L 1.5 cm  (1.4" L 0.6")
  durata inflorescence60 days
  time to bloom from birth, ≈ 50 days  
CITES appendix II


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