Paphiopedilum callosum

Paph. callosum

Scientific Classification
Kingdom: Plantae
Division: Magnoliophyta
Class: Liliopsida
Order: Asparagales
Subfamily: Cypripedioideae
Tribe: Cypripedioideae
SubTribe: Paphiopedilinae
Genus: Paphiopedilum
Species: Paph. callosum
Binomial name
Paphiopedilum callosum
(Rchb. f.) Pfitzer 1895

Paphiopedilum callosum is a species of Paphiopedilum found in Asia.


Plant blooms in the spring with a single 10 cm wide flower.


Plants are found growing on the cloud forest floor in leaf litter and rocks in the Loei province of Cambodia, Laos, Vietnam, and Thailand at elevations of 340 to 1000 meters. The area is subjected to heavy rains from spring to fall. Winter is humid with heavy mist during the evening.


Plant should be grown in areas with moderately bright light and intermediate temperatures. Pot in a well drain mix such as medium fir bark and perlite. Water regularly about every four to five days. To induce blooming reduce watering in the spring and winter.


Paphiopedilum callosum sublaeve Paphiopedilum callosum var. sublaeve Sepals and petals are green, lip is pink


Common Names: The Callus Paphiopedilum


  1. Cordula callosa Rolfe 1912
  2. Cypripedium barbatum var. warnerianum T.Moore 1878
  3. *Cypripedium callosum Rchb.f 1886
  4. Cypripedium callosum var. sublaeve Rchb.f. 1888
  5. Cypripedium crossii E. Morren 1865
  6. Cypripedium schmidtianum Kraenzl. 1901
  7. Paphiopedilum amabile sensu Guillam 1937
  8. Paphiopedilum callosum subsp. sublaeve (Rchb.f.) Fowlie 1972
  9. Paphiopedilum callosum var angustipetalum Guillam. 1924
  10. Paphiopedilum callosum var. potentianum (O.Gruss & Roeth) P.J.Cribb 1998
  11. Paphiopedilum callosum var schmidtianum [Kraenzl] Pfitzer 1903
  12. Paphiopedilum callosum var. sublaeve (Rchb.f.) P.J.Cribb 1987
  13. Paphiopedilum callosum var. viniferum (Koop. & N.Haseg.) Cavestro 2001
  14. Paphiopedilum callosum var. warnerianum (T.Moore) ined
  15. Paphiopedilum crossii [Morren] Braem & Senghas 2000
  16. Paphiopedilum crossii f. viniferum (Koop. & N.Haseg.) Braem & Chiron 2003
  17. Paphiopedilum crossii var. potentianum (O.Gruss & Roeth) Braem & Senghas 2000
  18. Paphiopedilum crossii var. sublaeve (Rchb.f.) Braem & Senghas 2000
  19. Paphiopedilum potentianum O.Gruss & Roeth 1995
  20. Paphiopedilum sublaeve (Rchb.f.) Fowlie 1979
  21. Paphiopedilum viniferum Koop. & N.Haseg. 2000