Oncidium biorbiculare [Balam & Cetzal] in ed. SECTION Cebolletae Photo by © W. Cetzal-Ix and Harvard Papers in Botany Vol 21 #2 Cetzal-Ix Carnevalli and Romero-Gonzalez 2016 Synopsis of the Trichocentrum Clade

EARLY

Common Name The Two Circled Oncidium

Flower Size

Found in San Luis Potosi, Queretaro, Vera Cruz, Tamaulipas state of Mexico in tropical deciduous forests at elevations of 300 to 1400 meters as a small to medium sized, hot to cool growing epiphyte with subspherical to broadly ovoid, green pseudobulbs enveloped completely by 3 imbricate, eventually deciduous sheaths and carrying a single, apical, terete, thickly fleshy-coriaceous, dark green with purple stained leaf that blooms in the early spring on a single, basal, 5.2 to 47.6" [13 to 119 cm] long overall, peduncle and rachis green-purple, peduncle more or less erect, terete, with 6 to 12 bracted internodes, oblanceolate, acuminate, tubular bracts subrtending the branches, racemose to 1 to 15 bhranched panicle, each branch 3 to 18 flowered, 3 to 53 flowered inflorescence with narrowly elliptic, acuminate floral bracts and carrying rsupinate flowers.

Synonyms *Cohniella biorbicularis Balam & Cetzal 2010; Trichocentrum biorbiculare (Balam & Cetzal) R.Jiménez & Solano 2011

References W3 Tropicos, Kew Monocot list , IPNI ; J. Torrey Bot. Soc. 137: 198 Cetzal & Carnevali 2010 as Cohniella biorbicularis drawing fide; Harvard Papers in Botany Vol 21 #2 Cetzal-Ix Carnevalli and Romero-Gonzalez 2016 Synopsis of the Trichocentrum Clade as Cohniella biorbicularis photo fide;

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