Trigonidium riopalenquense Dodson 1977 Photo by © Alejandro Calderon Gonzales

and

Common Name The Rio Palenque Trigonidium

Flower Size .8" [2 cm]

Found in Nicaragua, Costa Rica, Colombia and Ecuador in wet lowland forests at elevations of 50 to 1000 meters as a small sized, hot growing epiphyte with elliptic, slightly flattened, slightly ridged pseudobulbs carrying 2, apical, narrowly linear, acute, becoming conduplicate below into the clasping base leaves that blooms in the summer through fall on numerous, basal, 8" [20 cm] long, single flowered inflorescence

References W3 Tropicos, Kew Monocot list , IPNI ; Icones Planetarum Tropicarum Plate 347 Dodson 1980 drawing ok; Orchids from The Coast Of Ecuador Arosemana, Jurado, Estrada and Konanz 1988 photo fide; Icones Planetarum Tropicarum Plate 1399 Atwood 1989 drawing ok; Fieldiana Biology, Flora Costa Ricensis Family # 39 Orchidaceae, subtribes Maxillariinae and Oncidiinae Atwood & Mora 1997; Native Ecuadorian Orchids Vol 5 Dodson 2004 photo ok;

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