Cyrtochilum umbonatum (Rchb.f.) Kraenzl. 1917 SECTION Cimicifera Lindley
From Stig Dalstrom's Archives
Specimen by © and Swiss Orchid Foundation at the Jany Renz Herbaria
Common Name The Bulging Cyrtochilum
Flower Size .2" [.6 cm]
Found in Napo province of Ecuador in scrub cloud forests at elevations of 2400 to 3000 meters as a medium to large sized, cold growing epiphyte or terrestrial with 12" between each pseudobulb enveloped completely by imbricate, distichous sheaths with the uppermost being leaf-bearing and carrying linear-lanceolate, acute, becoming conduplicate below into the petiolate base leaves that blooms in the spring on a very long, paniculate, many branched, fractiflex, 4" [10 cm] long, well spaced branches, many flowered inflorescence with widely spaced flowers.
This species, C murinum, C porrigens and C diodon are all very similar and may all be in one variable species complex but I have kept them separate for now.
Synonyms *Oncidium umbonatum Rchb.f. 1876; Trigonochilum umbonatum (Rchb.f.) Königer & Schildh. 1994
References W3 Tropicos, Kew Monocot list , IPNI ; Das Pflanzanreich Regni Vegetabilis Conspectus Odontoglossum/Oncidium Kranzlin 1922 drawing fide; Icones Planetarum Tropicarum Plate 561 Dodson 1989 drawing fide; Native Ecuadorian Orchids Vol IV Dodson 2003 as Oncidium umbonatum not = C fractiflexum; Orchid Species Culture: Oncidium/Odontoglossum alliance Bakers 2006; Flora of Ecuador No 87 225[3] Orchidaceae Dodson & Luer 2010 drawing fide; Orchids, A Colombian Treasure Vol 1 Ortiz & Uribe 2014 photo ok
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