Cyrtochilum macranthum [Lindley] Kraenzel 1917 SECTION Eucyrtochilum Kranzlin

Lip Detail Photo by Danny Lentz, plant grown by Atlanta Botanical Garden

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Common Name The Large Flowered Cyrtochilum

Flower Size to more than 4", largest in genus [to more than 10 cm]

A cool to cold growing, large sized, caespitose epiphyte from Colombia, Peru and Ecuador that is found in montane cloud forests at elevations up to 3000 meters with ovoid to conical, slightly compressed pseudobulbs enveloped basally by 3 to 4 imbricating sheaths and carrying 2 apical, linear-oblong to oblanceolate, acute leaves and blooms on an axillary, stout, woody, to about 12' [360 cm] long, ascending to arcuate, long, paniculate, each branch 2 to 5 flowered, inflorescence arising on a mature pseudobulb through the axil of the basal sheath with up to 5, showy, long-lasting flowers to each branch and occuring in the fall through spring.

Synonyms Cyrtochilum carrutherianum F.Lehm. & Kraenzl. 1922; Cyrtochilum hastiferum (Rchb.f. & Warsz.) Kraenzl. 1917; Oncidium hastiferum hort. 1875; *Oncidium macranthum Lindley 1833

References W3 Tropicos Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; Bonplandia Rchb.f 1854 as Oncidium hastiferum; Bonplandia Rchb.f 1856 as Oncidium macranthum; Otia Botanica Hamburgensia Rchb.f 1878 as Oncidium macranthum; *Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1917 drawing hmm; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1917 as C hastiferum; AOS Bulletin Vol 26 No 7 1957 photo as Oncidium macranthum; AOS Bulletin Vol 27 No 7 1958 drawing as Oncidium macranthum; AOS Bulletin Vol 27 No 9 1958 photo as Oncidium macranthum; AOS Bulletin Vol 30 No 2 1961 photo as Oncidium macranthum; AOS Bulletin Vol 31 No 7 1962 photo as Oncidium macranthum; Encyclopedia of Cultivated Orchids Hawkes 1965 as Oncidium macranthum; Orchid Digest Vol 38 no 5 1974 as Oncidium macranthum photo fide; Orquideologia Vol 14 No 1 1979 photo as Oncidium macranthum; AOS Bulletin Vol 51 No 5 1982 photo as Oncidium macranthum; Icones Planetarum Tropicarum plate 478 Dodson 1982 as Oncidium macranthum drawing fide; AOS Bulletin Vol 64 No 12 1995 photo as Oncidium macranthum; Icones Orchidacearum Peruviarum Plate 337 Bennett & Christenson 1995 as Oncidium macranthum drawing fide; AOS Bulletin Vol 67 No 1 1998 photo; Australian Orchid Review Vol 66 No 2 2001 photo as Oncidium macranthum; AOS Bulletin Vol 70 No 8 2001 photo; Lindleyana Vol 16 No 2 2001; The Pictoral Encyclopedia of Oncidium Zelenko 2002; Native Ecuadorian Orchids Vol 4 Dodson 2003 as Oncidium macranthum drawing/photo fide; AOS Bulletin Vol 73 No 3 2004; AOS Bulletin Vol 73 No 5 2004 photo; Orchid Species Culture: Oncidium, Bakers 2006; AOS Bulletin Vol 76 No 1 2007 photo; Orchid Digest Vol 71 No 1 2007 photo; AOS Bulletin Vol 77 No 8 2008 photo; AOS Bulletin Vol 77 No 11 2008 photo; 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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