Catasetum costatum Rchb.f. 1887 SUBGENUS Catasetum SECTION Isoceras Ulisses Ferreira

Photo by Ulisses Ferreira and his Facebook Page


Drawing by Dunsterville & Garay and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Part sun WarmCool

Common Name The Ribbed Catasetum

Flower Size 1" [2.5 cm]

Found in the Amazonas state of Venezuela and Brazil at elevations of 1000 to 1300 meters as a small to medium sized, cool growing epiphyte with fusiform, lightly compressed pseudobulbs carrying dark green, lightly plicate, rather stiff, carinate, broadly lanceolate leaves that blooms on a lateral, basal, horizontally arching peduncle, terete, rachis subpendent, pinkish green, 10" [25 cm] long overall, 10 to 15 flowered inflorescence

Similar in most all respects and many consider it conspecific to C macrocarpum but differs mostly in the divaricate anntenae


References W3 Tropicos, Kew Monocot list , IPNI ; Flora Brasilica Vol XII VI Hoehne 1942; Venezuelan Orchids Illustrated Vol 1 Dunsterville & Garay 1976 drawing fide; Orchids of Venezuela [An illustrated field guide] Vol. 1 Dunsterville and Garay 1979 drawing fide; Die Orchideen lieferung 26 Schlechter/Brieger 1992; A World of Catasetum Holst 1999; Orchids of Venezuela [An illustrated field guide] Vol. 1 Ramiro and Carnevali 2000 drawing fide; Orchids, A Colombian Treasure Vol 1 Ortiz & Uribe 2014 photo fide