Paphiopedilum concolor

 Paphiopedilum concolor

Paphiopedilum concolor                                                                                                                                                  photo C. Solimbergo
     
taxonomy       desribed by      (Bateman)  Pfitzer, Ernst Hugo Heinrich
  published in Die Natürlichen Pflanzenfamilien  2 ( 6 ) : 84    1888
     
  family Orchidaceae                                   
  subfamily Cypripedioideae
  tribe --
  subtribe --
  genus Paphiopedilum  Pfitzer
  subgenus Brachypetalum  (Pfitzer ex Haller) Karasawa & Saito 1982
     
  chromosones 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 forests next to the sea in Burma (Moulmayne), Thailandia (Ban Pu, Sai Yok, Pu Wieng), Laos, Cambogia,
    Viet Nam (Bac Kan,Hoa Binh, Quang Binh, Son La), Cina (Guanxi, Guizhou, Yunnan)
  altitude 200 - 700 m  (660 - 2310 ft)
  habitat
climate informations from Guilin (Guangxi, 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 450 m / 1500 ft) :
    Paphiopedilum concolor b gr uk
  photoperiod 
in Guilin this orchid blooms with a photoperiod, which varies during the year, from 13 h 40 m' to 10 h 20 m'
  life form geophyte or litophyte, on limestone rocks, covered with debris of leaves and moss
   
to bloom induction, need a rest in december or january, lowering temperatures to 6 c° (43 f°)   (Lance A. Birk)
  brightness         partial shade 
     
inflorescence    length 2 cm (0.8"), apical
  nr. flowers 1, fragrant
  size single flower  5,5 L 5 cm (2.2" L 2")
  duration single flower ~ 14 days
  time to bloom from birth, ~ 80 days
     
CITES appendix I

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