Cyrtochilum exasperatum (Linden & Rchb.f.) Kraenzl. 1917 SECTION Cimicifera Lindley

Photos by K. Senghas © and Swiss Orchid Foundation at the Jany Renz Herbaria

Common Name The Smooth Cyrtochilum

Flower Size .6" [1.5 cm]

Found in Colombia in very wet montane forests at elevations around 1400 meters as a small to medium sized, cool growing epiphyte with an elongate, creeping rhizome giving rise to small pseudobulbs enveloped completely by distichous, leaf bearing sheaths and carrying ligulate, thin, acute, basally clasping leaves that blooms in the fall on an erect then descending, to 4'2" [125 cm] long overall, peduncle to 22" [55 cm] long, paniculate, to 28" [70 cm] long, many branched, to 4" [10 cm] long, some branches branching again,each with 1 to 3 flowers, many flowered inflorescence

Synonyms *Oncidium exasperatum Linden & Rchb.f.1869; Trigonochilum exasperatum (Linden & Rchb.f.) Königer & Schildh. 1994

References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 drawing good; Icones Planetarum Tropicarum plate 473 Dodson 1982 as Oncidium exasperatum not = C flexuosum; The Pictoral Encyclopedia of Oncidium Zelenko 2002 drawing fide; Native Ecuadorian Orchids Vol IV Dodson 2003 as Oncidium exasperatum not = C flexuosum; Orchid Species Culture: Orquideologia Vol. 23 No 2 2004 as Oncidium exasperatum; AOS Bulletin Vol 74 No 12 2005 drawing fide; AOS Bulletin Vol 75 # 3 2006 drawing fide; Oncidium/Odontoglossum alliance Bakers 2006; Orquideologia Vol 25 #2 2008; Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010 excluded; Orchids, A Colombian Treasure Vol 1 Ortiz & Uribe 2014 drawing/photo fide