Odontoglossum armatum Rchb. f. 1877 Photo courtesy of © Lourens Grobler

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Common Name The Armed Odontoglossum

Flower Size 2" [5 cm]

Found in cold, wet, montane, cloud forests of Colombia, Ecuador and Peru as a small sized, cool to cold growing epiphyte at an elevation of 2300 to 3500 meters with a rhizome enveloped by imbricating, scarious bracts with ovoid-pyriform, compressed, ancipitous pseudobulbs enveloped by imbricating pairs of bracts with the uppermost leaf-bearing, a single, apical, linear-oblanceolate, acute, thin, attenuate to a strongly conduplicate petiole where it blooms in the summer on an axillary, 6 1/4" [16 cm] long, erect to arcuate, 4 to 6 flowered, racemose or paniculate inflorescence with 1 to 2 tubular, green bracts arising on a newly maturing psuedobulb that is longer than the leaves occuring in the fall.

Synonyms Odontoglossum portmannii var. cohrsiae Bockemühl 1988

References W3 Tropicos, Kew Monocot list IPNI ; Icones Planetarum Tropicarum plate 944 Dodson 1984; Icones Orchidacearum Peruviarum Plate 126 Bennett & Christenson 1993; Native Colombian Orchids Vol 6 COS 1998; Native Ecuadorian Orchids Vol 3 Dodson 2002; Orchid Species Culture: Oncidium, Bakers 2006

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