Oncidium heteranthum Poepp. & Endl. 1836 SECTION Heterantha
Photo by © Alexander Reynolds and the Field Museum Website
Photos by © Americo Docha Neto
Drawing by Willibald Koniger
to
Common Name The Differently Flowered Oncidium [refers to the normal and sterile flowers of this species]
Flower Size .72" [1.8 cm]
Found from Antioquia department of Colombia, Falcon state of Venezuela, Surinam, northern Brazil, Napo, El Oro and Morona Santiago Ecuador, Junin, Amazonas and Huanuco departments of Peru and Cochabamba department of Bolivia at elevations of 200 to 2900 meters as a miniature to medium sized, warm to cold growing epiphyte with closely spaced, somewhat grooved, narrowly ovate, laterally compressed, ancipitous pseudobulbs partially enveloped by a few, basal, short, leaf-bearing sheaths and carrying 1 to 3 apical, lanceolate, acute, shortly conduplicate below into the base leaves that blooms in the summer and fall on a basal, 30 to 47" [75 to 120 cm] long, paniculate, slender, erect to arching to drooping, many flowered inflorescence arising on a mature pseudobulb and carrying both lipless, sterile and normal lipped flowers.
Synonyms Heteranthocidium heteranthum (Poepp. & Endl.) Szlach., Mytnik & Romowicz 2006; Oncidium zonatum Cogn 1893
References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1856; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922; The Orchids of Panama L.O. Williams & P Allen 1946; AOS Bulletin Vol 30 No 5 1961; Venezuelan Orchids illustrated Vol 2 Dunsterville & Garay 1961 drawing fide; AOS Bulletin Vol 36 #9 1967; Flora de Venezuela Volumen XV Part 5 Foldats 1970 drawing good; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 drawing fide; Icones Planetarum Tropicarum plate 566 Dodson 1982 drawing fide; The Orchids of Surinam Werkhoven 1986 photo ok; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0128 Dodson & Bennett 1989 drawing fide; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; Native Colombian Orchids Vol 3 COS 1991 photo not = O adelaidae; The Manual Of Cultivated Orchid Species Bechtel, Cribb & Launert 1992; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo good; Native Colombian Orchids Vol 6 COS 1998 errata = O adelaidae; Icones Orchidacearum Peruviarum Plate 142 Bennett & Christenson 1993 Drawing fide; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997 photo good; Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 drawing fide; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Native Ecuadorian Orchids Vol 4 Dodson 2003 drawing fide; Orquideologia Vol. 23 No 2 2004; Boletim CAOB Vol 55 2004; Oncidium Vol 2 Koniger 2005 drawing/photo fide; Orchid Species Culture: Oncidium, Bakers 2006; Mille et Une Mini Orchideees Roguenant 2009 photo good;
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