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Orchid Species: Oncidium acrobotryum

Kew currently accepted name is Grandiphyllum auricula

Oncidium acrobotryum is an orchid species identified by Klotzsch in 1855. Culture information and photos for this orchid are commonly detailed under the currently accepted name of Grandiphyllum auricula.
Genus
Oncidium (Onc.)
Grex
acrobotryum
Parents
Species
Author
Klotzsch
Year
1855
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ORIGIN: This miniature to small sized, cool to warm growing, lithophytic or epiphytic, cold to cool growing species is found in Rio de Janeiro, Espirito Santo, Sao Paulo and Minas Gerais, Brazil on moss covered tree trunks in primary forests near streams in areas with hot dry days and cool nights with frequent dews at elevations around 1000 meters.

DESCRIPTION: This miniature to small sized, cool to warm growing, lithophytic or epiphytic, cold to cool growing species is found in Rio de Janeiro, Espirito Santo, Sao Paulo and Minas Gerais, Brazil on moss covered tree trunks in primary forests near streams in areas with hot dry days and cool nights with frequent dews at elevations around 1000 meters with elliptic to somewhat round, light green, laterally compressed, ancipitous, pseudobulb partially enveloped basally by a few dry, leafless sheaths and carrying a single, apical, elliptic, acute, stiff, leathery, very fleshy, keeled below, shortly conduplicate below into the base leaf that blooms in the fall on a basal, erect to arching, 5 to 12 [12.5 to 30 cm] long, to 40 flowered inflorescence with basal branches and partially open flowers. This plant has a decided mule ear look but differs in having conspicuous pseudobulbs.

FLOWER SIZE: About 1/8 inch [5 to 6 mm] -- information provided by Jay Pfahl, author of the Internet Orchid Species Encyclopedia (IOSPE).
Other Names
Genus Name Genus Grex Name Year Author
Add+ Oncidium Onc harrisonianum 1833 Lindl.
Add+ Aurinocidium Aurinocidium harrisonianum 2006 (Lindl.) Romowicz & Szlach.
Add+ Oncidium Onc auricula 1957 (Vell.) Pabst
Add+ Epidendrum Epi auricula 1831 Vell.
Add+ Oncidium Onc harrisoniae 1834 G.Lodd. ex Drapiez
Add+ Grandiphyllum Gdp auricula 2006 (Vell.) Docha Neto
Add+ Oncidium Onc pallidum 1840 Lindl.
Add+ Oncidium Onc pantherinum 1842 Hoffmanns.
Add+ Oncidium Onc pentaspilum 1844 Hoffmanns.
Add+ Oncidium Onc ramiferum 1855 Klotzsch
Most awarded/recent cultivars: Onc. harrisonianum 'Second Chance' (2 awards in 1998) Onc. harrisonianum 'Arborview' (1996) Onc. harrisonianum 'Elven Gold' (1994) Onc. harrisonianum 'Evergreen' (1983)
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