Sigmatostalix amazonica Schltr. 1925
Photo by © Ron Parsons
Photo by Maarten Sepp
to 
and EARLY
Common Name The Amazon Sigmatostalix
Flower Size 5/8"" [1.5 cm]
Found from French Guiana, Surinam, Venezuela, Colombia? Brazil, Bolivia?, and Peru in the lower reaches of wet montane forests as a small sized, hot to warm growing epiphyte at elevations of 100 to 1000 meters with an elliptic or obovate, lightly oblique, strongly compressed, ancipitous, yellow green pseudobulb with several pairs of basal distichous, imbricating sheath with the uppermost leaf bearing, and a single, apical, broadly lanceolate, acute, shortly conduplicate at the base leaf with a carinate midvein that blooms on an axillary, 4" [10 cm] long, arching , racemose panicles with ovate, acuminate, concave bracts all arising on a newly matured pseudobulb with the 8 to 10 branches, successively [20 or more] flowered and longer than the leaves all occuring in the winter and early spring.
Synonyms Oncidium amazonicum [Schlechter} Chase & NH Wms. 2008
References W3 Tropicos, Kew Monocot list , IPNI ; Venezuelan Orchids Vol 5 Dunsterville & Garay 1975 drawing fide; Orchidaceae Brasilenses Band 2 Pabst & Dungs 1977 drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing fide; Icones Planetarum Tropicarum Plate 586 Dodson 1982 drawing fide; AOS Bulletin Vol 53 No 1 1984 photo fide; The Orchids of Surinam Werkhoven 1986 photo ok; Orchids Travel By Air A Pictoral Safari Mulder, Mulder-Roelfsema and Schuiteman 1990 photo fide; Icones Orchidacearum Peruviarum Plate 183 Bennett & Christenson 1993 drawing fide; Native Colombian Orchids Vol 4 COS 1992 photo fide; Rudolf Schlechter Die Orchideen Band 1C lieferung 33 - 36 2057 - 2308 Brieger 1997 drawing good; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing fide; Flora of the Venezuelan Guayana Vol 7 Steyermark, Berry, Yatskievych and Holst 2003; Native Ecuadorian Orchids Vol 5 Dodson 2004 drawing/photo fide; Orquideologia Vol. 23 No 1 2004 photo good; Orchid Species Culture Oncidium/Odontoglossum Alliance Bakers 2006; AOS Bulletin Vol 77 No 12 2008 as Oncidium amazonicum; AOS Bulletin Vol 78 #4 2009 as Oncidium amazonicum photo fide; Orchid Species Of Peru Zelenko & Bermudez 2009 photo fide
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