Cyrtochilum auropurpureum (Rchb.f.) Dalström 2001 Photo by © Jay Pfahl.

New TYPE Drawing Drawing by © Dunsterville and Garay Vol 5 196698+.

Common Name The Yellow/Purple Cyrtochilum

Flower Size 2.2" [5.5 cm]

Found in Colombia and Venezuela in upper level cloud forests at elevations of 2500 to 3500 meters as a medium sized, cold growing epiphyte or terrestrial orchid with ovate, tapering apically, laterally compressed, ancipitous, longitudinally ridged and grooved with age pseudobulbs partially enveloped basally by 2 to 3 pairs of distichous, imbricating, conduplicate, leaf bearing sheaths and carrying 2 to 3 apical, erect to slightly spreading, narrowly lanceolate, acute, dark green, narrowing below into a conduplicate, long, petiolate base leaves that blooms in the spring on basal, erect, to 59" [150 cm] long, peduncle to 39" [100 cm] long, pyramidically paniculate, to 20" [50 cm] long, many [to 150] flowered inflorescence arising from the leaf axils of a mature pseudobulb and carries several, slightly fractiflex, widely spread branches with 5 to 8, nonfragrant flowers.

CAUTION!! Pers comm Stig Dalström: I have split “auropurpureum” into four species: auropurpureum (the type, see Venezuelan Orchids), compactum (from Peru), orientale (from Ecuador) and triphyllum (from Ecuador and Peru).

Synonyms *Odontoglossum auropurpureum Rchb.f. 1850; Odontoglossum floribundum Schltr. 1924; Odontoglossum koehleri Schltr. 1921; Oncidium auropurpureum (Rchb.f.) Beer 1854

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as Odontoglossum auropurpureum; Die Orchideen der Sudamerikanischen Kordillerenstaaten IV Peru Schlechter 1921 as Odontoglossum koehleri; Beitrage Zur Orchideenkunde Von Colombia 27:107 Schlechter 1924 as O floribundum; Orchids of Peru Vol 4 Schweinfurth 1961 as Odontoglossum aureopurpureum; Flora de Venezuela Foldats Volumen XV Part 5 1970 as Odontoglossum auropurpureum drawing fide; Venezuelan Orchids Vol 5 Dunsterville & Garay 1972 as Odontoglossum auropurpureum drawing fide; Orchids of Venezuela; An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 as Odontoglossum auropurpureum drawing fide; Icones Planetarum Tropicarum plate 955 Dodson 1984 as Odontoglossum koehleri drawing fide; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997 drawing ok; Rudolf Schlechter Die Orchideen Lieferung 33-6 1997 as ODontoglossum auropurpureum; Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 as Odontoglossum auropurpureum drawing fide; *Lindleyana Vol 16 No 2 2001; Native Ecuadorian Orchids Vol 3 Dodson 2002 as Odontoglossum aureopurpureum drawing/photos fide; Machu Picchu Orchids Christenson 2003 as Odontoglossum koehleri photo hmm; Orchid Species Culture: Oncidium/Odontoglossum Alliance Bakers 2006; Libro Rojo de Plantas De Colombia Vol 6 Primera Parte Saenz 2007 as Odontoglossum aureopurpureum;Genera Orchidacearum Vol 5 Epidendroideaea Part 2 Pridgeon, Chase, Cribb & Rasmusen 2009 drawing fide; Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010 drawing fide; Orchids of the Department of Valle de Cauca Colombia Vol 4 Kolanowska and Szlachetko 2016 as Odontoglossum aureopurpureum drawing ok;

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