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Paphiopedilum callosum (Rchb.f.) Stein

Description:  Blooming in the spring and early summer, this medium sized, hot to cool growing, terrestrial or lithophytic orchid has 3 to 5, narrowly elliptic, oblong-elliptic or obovate, mottled dark green with pale green, acute and equally 2 or 3 lobed apically leaves and a single flowered [occasionally 2],  terminal inflorescence with ovate to elliptic, acute to subacute floral bracts that are 1/3 the length of the ovaries and carrying 1 to rarely 2, showy flowers and is found in Thailand, Cambodia, Vietnam and Laos in primary, closed, evergreen seasonal, broadleafed lowland forests, mixed and coniferous woods and primary highland cloud forests in soils rich in silicates or on granite and sandstone at altitudes of 300 to 2000 meters that grows with even water and fertilizer, plus humid, very shady conditions, year round. This species is closely related and similar to the Paphiopedilum barbatum, the flower is smaller and darker, This species is quite variable and a number of varieties have been described.
Picture
Photorights: Cedric Jancloes
  • Size:  Leaves: 3-5, 10-20 cm long, 3-5 cm wide, above mottled pale and dark green, below sometimes purple-suffused, basal margins ciliate, Inflorescence: 1- (rarely 2-) flowered, 12-25 cm long, purple, purple-pubescent,Bloom: 8-11 cm across, petals held at ~45�  
  • Collector/Witnesses:  Cedric Jancloes, Viboth Ly, Sok vichea (2016)
  • Year Collected:  2011
  • Growing Media:  pot
  • Flowering Period:  February - may
  • Color:  white sepals with green veins at base and purple, at tip,  dark purple warts with black hair on petals, pouch purplish brown.
  • Water:  2 time daily
  • Light:  shade
  • Temperature:  7 – 32 °C
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