Oncidium varicosum Lindl. & Paxton 1837 SECTION Synsepala Photo courtesy of © Lourens Grobler

Plant and Flowers in situ Bahia Brazil Photo by © Sidney Marçal

Part shadeWarm to Cool SummerFall

Common Name The Veined Oncidium

Flower Size seldom more than 1 1/2" [to more than 3.75 cm]

Found in Brazil, Bolivia and Paraguay at elevations of 800 to 1100 meters as an epiphytic, medium sized, cool to warm growing orchid with ovoid, elongate, slightly compressed and rugose, 4" [10 cm] psuedobulbs that have 2 to 3 apical, lanceolate, coriaceous yet flexible, curved 8" [20 cm] leaves. The basal panicle is stiff, usually pendant, branched, lax and 2 to 5' [60 to 150 cm] long and carrying many non-fragrant, variable sized flowers that arise in the fall and winter.

Synonyms Ampliglossum varicosum (Lindl.) Campacci 2006; Coppensia varicosa (Lindl.) Campacci 2006; Oncidium euxanthinum Rchb. f. 1869; Oncidium geranense Barb. Rodr. 1881; Oncidium lunaeanum auct. 1850; Oncidium rodgersii hort. ex Bateman 1868; Oncidium varicosum var. charlesworthii auct. 1892; Oncidium varicosum var. concolor Cogn. 1897; Oncidium varicosum var. lindenii auct. 1899; Oncidium varicosum var. rogersii (Bateman) Rchb.f. 1870; Oncidium varicosum var. southorangense Grey 1895; Oncidium varicosum var. vexillarium Kraenzl. 1922

References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 32 No 10 1963; Orchid Digest Vol 44 No 2 1980; AOS Bulletin Vol 54 No 6 1985 photo; AOS Bulletin Vol 56 No 11 1987 photo; AOS Bulletin No 63 No 9 1994 photo; Australian Orchid Review Vol 66 No 2 2001 photo; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 2 Koniger 2005; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Orquideas Da Chapada Diamantina Brito & Cribb 2005; AOS Bulletin Vol 76 No 8 2007 Photo as Coppensia varicosa

Oncidium varicosum Lindl. & Paxton var. rogersii 1837 Photo courtesy of © Lourens Grobler

Another Flower Photo courtesy of Mauro Rosim

to and

Flower Size 2" [5 cm]

Found in Brazil as a cool to hot growing epiphyte that blooms on a stiff, usually pendant, profusely branched, lax and 2 to 5' [60 to 150 cm] long inflorescence occuring in the fall and winter.

References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 47 No 6 1978 photo; AOS Bulletin Vol 64 No 4 1995 Photo;

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