Cyrtochilum aureum (Lindl.) Senghas 1997 SECTION Aurieum Photo by © Lourens Grobler.

All yellow Version Photo by © Marius Wasbauer

Part sun ColdSpring

Common Name The Golden Cyrtochilum

Flower Size 1 1/2" [3.75 cm]

A Bolivian and Peruvian, miniature to medium sized, cold growing terrestrial or lithophytic species and occasional epiphyte occuring 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 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 Dendrobium bicolor (Ruiz & Pav.) Pers. 1807; Odontoglossum aureum (Lindl.) Garay 1970; Odontoglossum hemichrysum Rchb. f. & Warsz. 1854; *Oncidium aureum Lindl. 1838; Oncidium aureum var. stenochilum Lindl. 1855; Oncidium bicolor Lindl. 1843; 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 Lieferung 33-6 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; 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; Oncidium vol 2 Koniger 2005; AOS Bulletin Vol 75 No 3 2006 drawing; 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;

--------------------------------------------------------------------------------------------------------------------------