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Orchid Species: Oncidium bicallosum

Kew currently accepted name is Trichocentrum bicallosum

Oncidium bicallosum is an orchid species identified by Lindl. in G.Bentham in 1842. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Trichocentrum bicallosum.
Genus
Oncidium (Onc.)
Grex
bicallosum
(traditional Sander nomenclature)
Parents
Species
Author
Lindl. in G.Bentham
Year
1842
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ORIGIN: Found from Mexico to Panama in humid forests at elevations of 1500 to 2200 meters.

DESCRIPTION: Large sized, cool to cold growing, mule eared epiphyte with small pseudobulbs completely enveloped by several thin, dry sheaths and carrying a single [an occasional 2], apical, erect, rigid, very fleshy, leathery, oblong-elliptic, acute, keeled dorsally, v shaped in cross-section leaf that blooms in the fall and winter on a basal, 8 to 26+ [20 to 65+ cm] long, pendulous, few to many flowered inflorescence with thin, dry, to 1 [2.5 cm] long bracts along the entire length and carrying large, fragrant flowers.

FLOWER SIZE: 2 inches [5 cm]long by 1.6 inches [4 cm] wide -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Trichocentrum Trt bicallosum 2001 (Lindl.) M.W.Chase & N.H.Williams
Add+ Lophiaris Lop bicallosa 1993 (Lindl.) Braem
Most awarded/recent cultivars: Trt. bicallosum 'Gerda' (2 awards in 2015) Onc. bicallosum 'Metchosin' (1986) Onc. bicallosum 'Robert Dix' (1982) Onc. bicallosum 'Vicli' (1974) Onc. bicallosum 'Vivian View' (1973)
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