Pleurothallis luctuosa Rchb. f. 1876 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Acroniae SERIES Acroniae Luer 1988

Photo by Daniel Jimenez

Another Flower

Photo by Dale and Deni Borders

to

Common Name The Sorrowful Pleurothallis [refers to the news of Endres' death]

Flower Size 1/2" [1.25 cm]

Found in Nicaragua, Costa Rica and Panama in very wet montane forests at elevations of 300 to 1150 meters as a miniature, hot to cool growing epiphyte with slender, erect, ramicauls enveloped basally by 2 to 3 basal, tubular sheaths and another below the middle carrying a single, apical, erect, coriaceous, narrowly elliptical-ovate, acute leaf that is narrowly cuneate and sessile basally that blooms in the spring on an erect to arching, loose, distichous, simultaneoulsy few to several flowered, 2 2/5" to 3 1/5" [6 to 8 cm] long, racemose inflorescence arising from a spathe and having thin, tubular floral bracts.

CAUTION If the provenance of your orchid is Colombia or Ecuador then procede to P tenuisepala as the South American species has been separated from this entity.

Synonyms Acronia luctuosa (Rchb.f.) Luer 2005; Humboldtia luctuosa (Rchb. f.) Kuntze 1891; Humboltia luctuosa (Rchb. f.) Kuntze 1891;

References W3 Tropicos, Kew Monocot list , IPNI ; Lankester's Epidendra Website CR; Xenia Orchidaceae Vol 3 Reichenbach 1878 drawing fide; *Linnaea 41: 48. 1877; Revis. Gen. Pl. 2: 667. 1891 as Humboldtia luctosa; Repert. Sp. Nov. Regni. Veg. Beih. 19: 107. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 190. Costa Rica Schlechter 1923; Repert. Sp. Nov. Regni. Veg. Beih. 19: 287. Costa Rica Schlechter 1923; Icones Planetarum Tropicarum plate 242 Dodson 1980 drawing not = P tenuisepala?; Icones Planetarum Tropicarum plate 1115 Dodson 1984 drawing fide; Systematics of Pleurothallis Vol 3 Luer 1986; Icones Pleurothallidinarum Vol XVII Systematics of Pleurothallis Section Abortivae, Truncatae, Subsection Acroniae, Subgenera Dracontia and Uncifera Luer 1998 drawing = P tenuisepala; Native Colombian Orchids Vol 6 COS 1998 photo not = P tenuisepala; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Pleurothallidinarum Vol XXVII Luer 2005 as Acronia luctosa; Orchids of Costa Rica Vol 5 Morales 2009 photo fide; Vanishing Beauty, Native Costa Rican Orchids Vol 2 Lacaena to Pteroglossa Pupulin 2020 photo fide

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