Pleurothallis aechme Luer 1976 SUBGENUS Acianthera SECTION Sicariae SUBSECTION Sicariae Luer 1986 Photo by http://succulent.cool.ne.jp
Another Angle Photos courtesy of Patricia Harding.

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Common Name The Lance Head Pleurothallis
Flower Size .2" [5 mm]
Found in Pataza Ecuador at elevations of 1000 to 1160 meters as a small sized, warm growing, caespitose epiphyte with sharply winged, laterally compressed, sulcate from the middle, erect, ramicauls enveloped by 2 to 3, thin, tubular sheaths and carrying a single, apical, erect, coriaceous, narrowly ovate, acute, acuminate, decurrent onto the ramicaul, cuneate below in to the sessile base leaf that blooms in the spring and fall on fascile , .2 to .24" [5 to 6 mm] long, successive flowered inflorescence arising at the apex of the ramicaul through a spathe
CAUTION I cannot be sure of either of the 2 orchids pictured above as I need a better closeup of the lip and petals to be sure.
Synonyms Acianthera aechme (Luer) Pridgeon & M.W. Chase 2001
References W3 Tropicos, Kew Monocot list , IPNI ; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986; Lindleyana Vol 16 No 4 2001 as Acianthera aechme; Icones Pleurothallidinarum Vol XXVI Luer 2004 drawing hmm
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