Cyrtochilum nigratum (Lindl. & Paxton) Kraenzl. 1922

SECTION Cimicifera Lindley

Photo courtesy of Botanická zahrada a arboretum Mendelova zemedelská a lesnická univerzita v Brne, Brno, Czech


Common Name The Blackish Cyrtochilum [refers to the dark purple spots on the sepal and petals]

Flower Size 1" [2.5 cm]

Found in Colombia and Venezuela, Guyana and south to Brazil in cloud forests or shrublands at elevations of 1500 to 2200 meters as a medium sized, cool to cold growing occasional terrestrial in thin soils in scrub, lithophyte on top of mesas and epiphyte low on trees in dwarf forests with pear-shaped, pale brown to yellow green, strongly laterally compressed, ancipitous, longitudinally grooved pseudobulbs partially enveloped basally by several pairs of imbricating, distichous, leaf-bearing sheaths and carrying 2 to 3, narrowly elliptic, stiff, acute, mostly keeled dorsally, shortly conduplicate below into the base leaves and blooms in the spring and summer on an erect, then pendant, to more than 79" [200 cm] long, lightly or strongly paniculate, each to 24" [60 cm] long branch carrying 5 to 15 flowers, many flowered inflorescence that arises on a newly matured pseudobulb and carries slightly fragrant, showy flowers.

Synonyms Oncidium nigratum Lindl. & Paxton 1850; Oncidium uaipanense Schnee 1952

References W3 Tropicos, Kew Monocot list , IPNI ; *Das Pflanzenreich Odontoglossum/Oncidium Kranzlin 1922 drawing hmm; Venezuelan Orchids Vol 3 Dunsterville & Garay 1965 as Oncidium nigratum drawing fide; Flora de Venezuela Volumen XV Part 5 Foldats 1970 as Oncidium nigratum drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 2 Dunsterville & Garay 1979 as Oncidium nigratum drawing fide; Orchids of Venezuela [An illustrated field guide] Vol. 2 Ramiro and Carnevali 2000 as Oncidium nigratum drawing fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003 as Oncidium nigratum drawing ok; Oncidium Vol 2 Koniger 2004 as Oncidium nigratum; Orquideologia Vol. 23 No 2 2004; Orchid Species Culture: Oncidium/Odontoglossum alliance Bakers 2006; Orquideas de Roirama Luz & Franco 2012 photo fide;