Pleurothallis eumecocaulon Schltr.1923 SUBGENUS Ancipitia SECTION Ancipitia Luer 1986
Photo by © Daniel Jimenez.
Photos by © Walter Schug
Plant and Flowers in situ Costa Rica
Photo by © Wilfried Löderbusch
TYPE Drawing by © Oakes Ames
to 
Common Name The Long Stemmed Pleurothallis [refers to the length of the ramicaul]
Flower Size .28" [7 mm]
Found in Alajuela and Guanacaste provinces of Costa Rica and Boca del Toros and Cocle provinces of Panama in moist forests at elevations of 800 to 1700 meters as a small sized, warm to cool growing, caespitose epiphyte or terrestrial with erect, slender, laterally compressed above the middle ramicaul, that has a tubular bract below the middle and 2 to 3 basal sheaths, a coriaceous, erect, narrowly ovate, acute leaf with its base cuneate to rounded, shallowly cordate and sessile. It blooms on 1 to 3, arising through a reclining spathe at the base of the leaf, erect, .8 to 1" [2 to 2.5 cm] long, in a fascile of successively single, few flowered inflorescence with much shorter than the pedicel floral bracts.
Distinguished by the successive, long-pedicellate, white flowers sometimes marked with purple. The narrow seplas are usually about .28" [7 mm]. The petals are subulate and cellular-glandular. The ovate lip, minutely fringed on the margins, is thickened with a low, round callus below the middle and a low purple callus above the midddle. Closely related to P harpago but it has smaller flowers and with ciliated petals and a ciliate lip with a prominent, incurved, hook-like lip. Luer 1989
Synonyms Ancipitia eumecocaulon (Schltr.) Luer 2004
References W3 Tropicos, Kew Monocot list , IPNI ;
* Repert. Sp. Nov. Regni. Veg. Beih. 19: 187. Costa Rica Schlechter 1923;
The Orchids of Panama L.O. Williams & P Allen 1946;
Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;
Icones Pleurothallidinarum Vol VI Systematics of Pleurothallis subgen Ancipita, Scopula and Trisetella Luer 1989 drawing fide;
Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003;
Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera and Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 as Ancipitia eumecocaulon;
Orchids of Costa Rica Vol 5 Morales 2009 photo fide; Mille et Une Mini Orchideees Roguenant 2009 photo fide;
AOS Bulletin Vol 81 #11 2012 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide
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