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Orchid Species: Oncidium plagianthum

Kew currently accepted name is Cyrtochilum xanthodon

Oncidium plagianthum is an orchid species identified by Rchb.f. in 1873. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Cyrtochilum xanthodon.
Genus
Oncidium (Onc.)
Grex
plagianthum
Parents
Species
Author
Rchb.f.
Year
1873
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ORIGIN: Found in Colombia to southern Ecuador and northern Peru at elevations of 1500-2500.

DESCRIPTION: Large sized, cool to cold growing terrestrial orchid with conical, slightly compressed pseudobulbs enveloped basally by several pairs of densely imbricate, leaf-bearing sheaths and carrying an apical, oblanceolate, acute, conduplicate below into an elongate, petiole-like base leaves. The axillary inflorescence occurring in the summer is up to 80 to 106 [200 to 270 cm] long, paniculate, 3 to 5 flowers on each, widely spaced, fractiflex branch, many [200] flowered inflorescence and can also have lower secondary branches.

FLOWER SIZE: 1 inch [2.5] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Cyrtochilum Cyr xanthodon 1917 (Rchb.f.) Kraenzl.
Add+ Oncidium Onc xanthodon 1868 Rchb.f.
Add+ Cyrtochilum Cyr cinereobrunneum 2001 D.E.Benn. & Christenson
Add+ Cyrtochilum Cyr phylloglossum 1917 (Rchb.f.) Kraenzl.
Add+ Cyrtochilum Cyr plagianthum 1917 (Rchb.f.) Kraenzl.
Add+ Cyrtochilum Cyr plurituberculatum 2001 D.E.Benn. & Christenson
Add+ Oncidium Onc phylloglossum 1881 Rchb.f.
Most awarded/recent cultivars: Onc. xanthodon 'Rustic Canyon' (1999)
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