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Orchid Species: Oncidium diadema

Kew currently accepted name is Cyrtochilum serratum

Oncidium diadema is an orchid species identified by Linden in 1866. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Cyrtochilum serratum.
Genus
Oncidium (Onc.)
Grex
diadema
Parents
Species
Author
Linden
Year
1866
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ORIGIN: Found in western Ecuador and Peru in montane cloud forests at elevations of 1300 to 3300 meters.

DESCRIPTION: Large sized, cold to cool growing epiphyte or terrestrial on steep cliff faces with oblong-ovoid, compressed pseudobulbs carrying 2, apical, narrowly linear-oblanceolate, acute leaves that blooms in the winter on an axillary, arcuate, 5 to 9' [150 to 270 cm] long, flexuous, racemose to paniculate, branches relatively short, fractiflex, 3 to 6 flowered each branch, many flowered inflorescence arising from the leaf sheath on a mature pseudobulb and has ovate-oblong, strongly concave, more or less blunt tipped floral bracts carrying wide-spreading flowers.

FLOWER SIZE: 3 inches [7.5 cm] long -- 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 serratum 1917 (Lindl.) Kraenzl.
Add+ Oncidium Onc serratum 1841 Lindl.
Most awarded/recent cultivars: Cyr. serratum 'Willstätt' (2018) Cyr. serratum 'Botanica' (2013) Onc. serratum 'Malvern' (1971)
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