Cyrtochilum aureum (Lindl.) Senghas 1997 SECTION Aurieum
Photos in situ Loja 2800 meters by © Jay Pfahl
Photo by © Marius Wasbauer
Photo by © Lourens Grobler.
Common Name The Golden Cyrtochilum
Flower Size 1 1/2" [3.75 cm]
Found in Ecuador, Peru and Bolivia in cloud forests or on exposed clay slopes with brush and grass that is found at 2000 to 4700 meters in elevation as a miniature to medium sized cold growing terrestrial or lithophytic species and occasional epiphyte occuring with ellipsoid, oval in cross-section pseudobulbs subtended by several pairs of distichous, imbricating, articulated, evanescent, foliaceous bracts with linear-oblanceolate, attenuate to the caniculate petiole, acute, carinate mid-veined leaves narrowing below into the conduplicate, petiolate base that blooms in the spring on a basal, erect to arcuate, fractiflex, 2' [60 cm] long, congested, racemose or paniculate, several [5 to 7] flowered inflorescence arising on a mature pseudobulb through the axil of the leaf sheath.
The Orchids of the Aureum group; C mystacinum has many short fingers at the base of the lip and C rigidum has none. C aureum is bicolored and has a crown of elongate fingers at the base of the lip and C cochleatum has 3 shorter fingers at the base of the lip.
Synonyms Odontoglossum aureum (Lindl.) Garay 1970; Odontoglossum aureum var. stenochilum (Lindl.) Garay 1970; Odontoglossum bicolor Lindley 1845; Odontoglossum festatum Rchb.f. 1854; Odontoglossum hemichrysum Rchb. f. & Warsz. 1854; *Oncidium aureum Lindl. 1838; Oncidium aureum var. stenochilum Lindl. 1855; Oncidium bicolor (Lindl.) Beer 1854; Oncidium bicolor Lindl. 1863; Oncidium dichromum Rolfe 1895; Oncidium dichroneura Rolfe 1895; Oncidium festatum Rchb. f. & Warsz. 1863; Oncidium hemichrysum (Rchb. f. & Warsz.) Rchb. f. 1863; Siederella aurea (Lindl.) Szlach., Mytnik, Górniak & Romowicz 2006
References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854 as Odontoglossum hemichrysum; Bonplandia Rchb.f 1854 as Odontoglossum festatum; Xenia Orchidaceae Vol 3 Reichenbach 1878 as Odontoglossum rigidum; Die Orchideen Schlechter 1915 as Oncidium aureum; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 as Oncidium aureum; Orchids of Peru Vol 4 Schweinfurth 1961 as Oncidium aureum; Encyclopedia of Cultivated Orchids Hawkes 1965 as Oncidium aureum; Orchid Digest Vol 46 No 3 1982 photo fide as Odontoglossum mystacinum; Icones Planetarum Tropicarum Plate 561 Vasquez & Dodson 1982 as Odontoglossum aureum drawing fide; Icones Planetarum Tropicarum Plate 965 Dodson 1984 as Odontoglossum rigidum drawing fide; Icones Planetarum Tropicarum Series II Orchids of Peru Plate 0113 Dodson & Bennett 1989 as Odontoglossum aureum drawing fide; Icones Orchidacearum Peruviarum Plate 134 Bennett & Christenson 1993 as Odontoglossum mystacinum drawing fide; *Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 photo hmm; Lindleyana Vol 16 No 2 2001; Lindleyana Vol 16 No 2 2001 as C fractiflexum; AOS Bulletin Vol 70 No 8 2001 photo fide; The Pictoral Encyclopedia of Oncidium Zelenko 2002 drawing fide; Native Ecuadorian Orchids Vol 3 Dodson 2002 as Odontoglossum aureum photo fide; AOS Bulletin Vol 73 No 3 2004; AOS Bulletin Vol 74 No 12 2005 drawing fide; Oncidium Vol 2 Koniger 2005 drawing/photo fide; AOS Bulletin Vol 75 No 3 2006 drawing fide; Orchid Species Culture: Oncidium/Odontoglossum alliance Bakers 2006; Orchid Species of Peru Zelenko Bermudez 2009 middle photo fide; Orquideas del Peru Freuler 2010 photo fide; Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010 drawing fide; Orchids[AOS] Vol 82, Pg 114 Dalstrom 2013 photos fide; Orquideas de Zamora Chinchipe Tomo 1 Epidendroideae I Jimenenz 2014 photo fide; Orchid Digest Vol 79 #3 2015 photo fide; Orchid Digest Vol 81 #2 2017 photo fide;
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