Thunia marshalliana

Thunia marshalliana

Thunia marshalliana                                                                                                                                                        photo C. Solimbergo
   
taxonomy described by Reichenbach, Friedrich Richard Rudolf
  published in       Linnaea  41 : 65    1877
     
  family Orchidaceae
  subfamily Epidendroideae
  tribe Arethuseae
  subtribe Coelogyninae
  genus Thunia  Reichenbach f. 1852
     
  chromosomes  2n = 36, 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 India (Manipur), Burma (Moulmein), Thailandia, Cina (Yunnan)
  altitude  1000 - 2000 m (3300 - 6600 ft)
  habitat climate informations from Wenshan (Yunnan, China)
    Köppen climate classification : Cfa, humid subtropical climate in all seasons, with very hot summers
    the weather station data (temperatures are calculated for an altitude of 1500 m / 4950 ft) :
    Thunia marshalliana b gr uk
  photoperiod in Wenshan this orchid bloom with a photoperiod, that varies during the year, from 13 h 33 m' to 10 h 27 m'
  life form epiphyte or geophyte
  brigthness     partial shade
     
inflorescence     length 12 - 14 cm (4.8" - 5.6"), apical  
  nr flowers 4 - 6, fragrants
  size single flower 3 L 4 cm (1.2" L 1.6") - inflorescence 15 L 10 cm (6" L 4")
  duration inflorescence20 days
  time to bloom from birth, ≈ 15 days
     
CITES appendix II

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