Cyrtochilum aureum (Lindl.) Senghas 1997 Photo courtesy of Lourens Grobler.

All yellow Version Photo courtesy of Marius Wasbauer

To

Common Name The Golden Cyrtochilum

Flower Size 1 1/2" [3.75 cm]

A Bolivian, Ecuadorian and Peruvian, miniature to medium sized, cool to cold growing terrestrial or lithophytic species and occasional epiphyte in cloud forests or on exposed clay slopes with brush and grass that is found at 2000 to 4700 meters in elevation with ellipsoid, oval in cross-section pseudobulb 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 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 occuring in the spring.

Synonyms Cyrtochilum mystacinum Lindl. 1838; Odontoglossum aureum (Lindl.) Garay 1970; Odontoglossum cochleatum (Lindl.) Rchb. f. 1886; Odontoglossum crocatum Linden & Rchb. f. 1867; Odontoglossum hemichrysum Rchb. f. & Warsz. 1854; Odontoglossum mystacinum (Lindl.) Lindl. 1852; Odontoglossum rigidum Lindley 1844 ; *Oncidium aureum Lindl. 1838; Oncidium aureum var. stenochilum Lindl. 1855; Oncidium bicolor Lindl. 1843; Oncidium cochleatum Lindl. 1838; Oncidium festatum Rchb. f. & Warsz. 1863; Oncidium hemichrysum (Rchb. f. & Warsz.) Rchb. f. 1863; Oncidium mystacinum (Lindl.) Beer 1854; Oncidium rigidum (Lindl.) Beer 1854;

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; Encyclopedia of Cultivated Orchids Hawkes 1965 as Oncidium aureum; Fieldiana Biology, Vol 33, 1st Supple. to the Orchids of Peru Schweinfurth 1970 as O cochleatum; 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; Lindleyana Vol 16 No 2 2001; Lindleyana Vol 16 No 2 2001 as C fractiflexum; AOS Bulletin Vol 70 No 8 2001 photo; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Native Ecuadorian Orchids Vol 3 Dodson 2002 photo fide; AOS Bulletin Vol 73 No 3 2004; AOS Bulletin Vol 74 No 12 2005 drawing; Oncidium vol 2 Koniger 2005; AOS Bulletin Vol 75 No 3 2006 drawing; Orchid Species Culture: Oncidium, Bakers 2006; Orchid Species of Peru Zelenko Bermudez 2009 photo fide; Orquideas del Peru Freuler 2010 photo fide; Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010 drawing fide

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