Pleurothallis crescentilabia Ames 1923 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Macrophyllae-Racemosae [Lindl] Luer 1986

Photo courtesy of Daniel Jimenez G. in Costa Rica

Common Name The Half-Moon Lip Pleurothallis

Flower Size .4" [2 cm]

Found in Costa Rica and Panama at elevations of 800 to 1600 meters as a miniature sized, warm to cool growing epiphyte with a stout, erect ramicaul enveloped basally by 2 to 3 sheaths and one close tubular sheath in the middle carrying a single, apical, erect, coriaceous, ovate, acute, abruptly narrrowing below into the channeled petiolate base leaf that blooms in the winter on a fascile of several at the leaf base, 1 to 2 loosely flowered, .2" [5mm] long, racemose inflorescence arising through a large, fugacious spathe with infundibular floral bracts.

"Characterized by the large, ovate, petiolate base leaf carrying a shortly pedunculate fascile of large flowers held at the base of the petioale. The dorsal sepal and concave synsepal gape and from within a pair of narrow, red petals protrudes. The lip is horseshoe shaped with the basal lobes surrounding the column." Luer 1999

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Sched. Orch. 4: 20. 1923; Icones Pleurothallidinarum XVIII Systematics of Pleurothallis Luer 1999 drawing fide; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Orchids of Costa Rica Vol 5 Morales 2009 photo fide; AOS Bulletin Vol 85 #10 2016 drawing fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide

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