Pleurothallis macra Lindl. 1859 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciclatae Lindl. 1859
Photo by Eric Hunt
Drawing by © Carl Luer and The Swiss Orchid Foundation at the Jany Renz Herbaria Website
MOSTLY 
Common Name The Large Pleurothallis
Flower Size 1/2" [1.25 cm]
Found in Pichinche, Cotopaxi and Tungurahua provinces of Ecuador and Peru at elevations of 1000 to 3400 meters as a miniature to small sized, cool to cold growing, caespitose epiphyte or terrestrial on steep slopes in very wet, montane cloud forest with a short rhizome giving rise to an elongate ramicaul enveloped basally by a tubular sheath and another below the middle and carrying a single, apical, narrow, lanceolate, erect, gradually conduplicate below leaf that blooms mostly in the spring on a fasciculate, arising from a spathe at the base of the leaf, short, pendant, successively few flowered inflorescence with a thin, tubular, much shorter than the pedicel floral bract.
This species is characterized by having the flowers hang from slender pedicels beyond the shallowly cordate base, the dorsal sepal is large and suborbicular and is much wider than the synsepal, the petals are narrowly falcate and the lip is ovate and obtuse.
Synonyms Acronia macra [Lindl.] Luer 2005; Humboldtia filifera (Lindl.) Kuntze 1891; Humboldtia macra ( Lindl. ) Kuntze 1891; Pleurothallis filifera Lindl. 1859; Zosterophyllanthos macer ( Lindl. ) Szlach. & Margonska 2001
References W3 Tropicos, Kew Monocot list , IPNI ;
*Fol. Orchid. 9: 10 Lindley 1859;
Selbyana 1: 252 Luer 1975 drawing fide;
Icones Planetarum Tropicarum plate 243 Dodson 1980 drawing fide;
Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;
Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia macra
Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia macra drawing fide ;
Orchid Species of Peru Zelenko & Bermudez 2009 photo fide
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