Paph. callosum 'Show Stopper' photo by Glen Barfield

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Orchid Species: Paphiopedilum callosum

(This name is currently accepted by Kew.)

Paphiopedilum callosum is an orchid species identified by (Rchb.f.) Stein in 1892.
Genus
Paphiopedilum (Paph.)
Grex
callosum
(name currently accepted by Kew)
Parents
Species
Author
(Rchb.f.) Stein
Year
1892
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ORIGIN: Found in Thailand, Cambodia, Vietnam and Laos in primary, closed, evergreen seasonal, broad leafed 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.

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], purple pubescent, erect, to 8 to 14 [20 to 40 cm] long, 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.

FLOWER SIZE: About 4 inches [to 10 cm] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Cypripedium Cyp callosum 1886 Rchb.f.
Add+ Paphiopedilum Paph sublaeve 1979 (Rchb.f.) Fowlie
Add+ Cordula Cordula callosa 1912 (Rchb.f.) Rolfe
Add+ Cypripedium Cyp crossii 1865 C.Morren
Add+ Cypripedium Cyp schmidtianum 1901 Kraenzl.
Add+ Paphiopedilum Paph birkii
Add+ Paphiopedilum Paph callosum sanderae
Add+ Paphiopedilum Paph crossii 2000 (C.Morren) Braem & Senghas
Add+ Paphiopedilum Paph potentianum 1995 O.Gruss & Roeth
Add+ Paphiopedilum Paph thailandense
Most awarded/recent cultivars: Paph. callosum var. warnerianum 'Natural World' (2018) Paph. callosum h.f. vinicolor 'Alex' (2016) Paph. callosum h.f. album 'Anja' (2013) Paph. thailandense h.f. album 'Fountain Springs' (1995) Paph. thailandense 'Linda' (1991) Paph. callosum h.v. sanderae 'Blumen Insel' (1989) Paph. thailandense 'Sunrise' (1980)
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