Paphiopedilum micranthum

Paphiopedilum micranthum 

Paphiopedilum micranthum                                                                                                                                          photo C. Solimbergo
     
taxonomy described by Tang, T. (Chin)  &  Wang, Fa Tsuan
  published in      Acta Phytotaxonomica Sinica  1 ( 1 ) : 56 - 57    1951
     
  family Orchidaceae
  subfamily Cypripedioideae
  tribe --
  subtribe --
  genus Paphiopedilum  Pfitzer 1886
  section  Parvisepalum  (Karasawa & Saito)  Cribb 1987 
     
  chromosomes   2n = 26
  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 cloud forests in Viet Nam (Cao Bang, Ha Giang, Tuyen Quang), China (Guangxi, Huanjiang, Mulong, 
    Hongdong, Yunnan, Guizhou)
  altitude 514 - 1600 m  (1700 - 5280 ft)
  habitat climate informations from Wenshan (Ma Li Po Valley, 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 1000 m / 3300 ft) :
    Paphiopedilum micranthum b gr uk
  photoperiod  in Wenshan this orchid blooms with a photoperiod, which varies during the year, from 13 h 33 m' to 10 h 27 m'
  lifwe form geophyte , on limestone or rocks moss covered
    bloom induction, lowering temperatures in winther
  brightness    low
     
inflorescence     length 20 - 27 cm (8" - 10.8"), from the base of the leaves
  nr flowers 1
  size single flower 9 L 8 cm (3.6" L 3.2")
  duration single flower, ≈ 30 days     
  time to bloom from birth, ≈ 150 - 200 days
     
CITES appendix  I

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