Oncidium parviflorum L.O. Williams 1942 SECTION Excavata

Flower Differences


Plant differences Photos by Daniel Jimenez

FAINTFragrancePart shadeHot to Warm LATEWinter to EARLY Spring

Common Name The Small Flowered Oncidium

Flower Size 5/8" [1.5 cm]

Found in Costa Rica and Panama at elevations of 200 to 1000 meters as a hot to warm growing epiphyte with elliptic to ovoid, laterally compressed, longitudinally grooved and ridged, ancipitous, brown spotted pseudobulbs partially enveloped basally by several, imbricate, leaf-bearing sheaths and carrying two apical, oblong-lanceolate, thin, conduplicate and narrowing below into the base leaf that blooms in the late winter and early spring on a axillary, slender, arching, paniculate, many flowered inflorescence that arises on a matured pseudobulb with many alternate branches with a decided bottle-brush look and carrying a few to several, long-lasting, faintly fragrant flowers on each branch.

This species is very similar to O dichromaticum but differs in having a yellow calus, non-erect dorsal sepal and a non lobed lip on the flower and the pseudobulbs have 4 thin leaves, two bracteous short pseudo-leaves at the bottom of the bulb and TWO large leaves on top while O dichromaticum has 5 short -permanent- leaves, two bracteous pseudo-leaves at the bottom of the bulb and THREE very characteristic leaves on top, and this plant always shows a small interruption at the top of the bulb.

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Amer. Orchid Soc. Bull. 11(1): 33, t. 1. 1942; The Orchids of Panama L.O. Williams & P Allen 1946 drawing good; AOS Bulletin Vol 27 No 6 1958; Encyclopedia of Cultivated Orchids Hawkes 1965; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Orchid Species Culture: Oncidium, Bakers 2006; Oncidium Vol 2 Koniger 2005