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Paphiopedilum callosum (Reichenbach fil.) Stein
in Stein's Orchideenbuch: 457 (1892).
Basionym :
Cypripedium callosum Reichenbach fil. in The Gardeners' Chronicle, 2nd series, 26: 326 (1886).
Synonyms :
Cypripedium crossii Morren in La Belgique Horticole, 15: 226, t. 17 (1865); and in La Belgique Horticole, 33: 96-98 [97-98], t. 7 (1883).
Cypripedium barbatum var. warnerianum T. Moore in Warner, Select Orchidaceous Plants, 3rd series, t. 11 (1877-1891 [probably 1880]).
Cypripedium barbatum var. warneri hort. in Journal of Horticulture and Practical Gardening, 4: 115 (1882).
Cypripedium barbatum var. crossii hort. ex Kent in Veitch, A Manual of Orchidaceous Plants, 4: 12 (1889).
Paphiopedilum reflexum hort. ex Stein in Stein's Orchideenbuch: 482 (1892).
Paphiopedilum regnieri hort. ex Stein in Stein's Orchideenbuch: 457 (1892).
Cypripedium schmidtianum Kränzlin in Botanisk Tidsskrift, 24: 13 (1901).
Paphiopedilum callosum var. schmidtianum (Kränzlin) Pfitzer in A. Engler, Das Pflanzenreich, IV. 50. Orchidaceae-Pleonandrae (Heft 12): 93 (1903).
Cordula callosa (Reichenbach fil.) Rolfe in The Orchid Review, 20(1): 2 (1912).
Paphiopedilum callosum var. angustipetalum Guillaumin in Bulletin de la Société Botanique de France, 4th series, 24: 551 (1924).
Paphiopedilum thailandense Fowlie in Orchid Digest, 43: 220 (1979), nomen nudum.
Paphiopedilum crossii (Morren) Braem & Senghas in Sida, 19(2): 249-255 (2000).
Paphiopedilum birkii Fowlie , nomen nudum.

Type(s) :

Varieties & Forms :
Paphiopedilum callosum var. potentianum
Paphiopedilum callosum var. sublaeve (Reichenbach fil.) P.J. Cribb
Paphiopedilum callosum f. viniferum
Paphiopedilum callosum f. viridiflorum

Other names that can be found:
var. giganteum - A large-flowered plant.
var. grandiflorum - A large-flowered plant.
var. rossianum - A large-flowered plant.
var. superbum - A large-flowered plant.

Description
Plant :
Leaves :
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Flower :

Habitat :

Distribution : Among other countries it can be found in Laos.

Flowering Season :

Chromosomes :

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