Pleurothallis decurrens Poepp. & Endl. 1836 SUBGENUS Acianthera SECTION Sicariae SUBSECTION Sicariae Luer 1986

Plant and Inflorescence

Photo by © Duane McDowell

Drawing

Drawing by Carl Luer

Drawing

Drawing by Lipsiae, Sumptibus Friderici Hofmeister and The Swiss Orchid Foundation at the Jany Renz Herbaria

to

Common Name The Downward Running Pleurothallis

Flower Size .8" [2 cm] tall

Found in Antioquia and Cundinamarca departments of Colombia, Napo, Loja and Zamora-Chinchipe provinces of Ecuador and Huanuco, Muña, Junin, Pasco and Amazonas departments of Peru in wet montane forests at elevations of 1150 to 2800 meters as a to small sized, cool to cold growing, repent epiphyte with elongate, slender, terete, stiff ramicauls enveloped basally by 2 tubular, scarious sheaths, with a single, apical, elliptic, subamplexicaul, acuminate, coriaceous, dark green leaf that blooms in the winter on a laying laxly, arising from a small spathe, fascile of short [to 3 cm], racemose, few [2 to 4] flowered inflorescence with shorter than the ovary floral bracts.

"Characterized by large, leathery leaves that are deeply decurrent on a terete, sulcate ramical. The raceme emerges about the middle of the blade and, although short it reaches nearly the apex. The sepals are fleshy, the petals are bicallous near the middle and long-acuminate above the middle and the lip is bicallous above the middle with a tall, thick, midline callus at the base." Luer 2004

Synonyms Acianthera decurrens (Poepp. & Endl.) Pridgeon & M.W. Chase 2001; Humboldtia decurrens (Poepp. & Endl.) Kuntze 1891; Humboltia decurrens (Poepp. & Endl.) Kuntze 1891

References W3 Tropicos, Kew Monocot list , IPNI ;

* Nov. Gen. Sp. Pl. 1: 48 Poepp. & Endl. 1836;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

Icones Orchidacearum Peruviarum Plate 744 Bennett & Christenson 2001 drawing no petals not denticulate;

Lindleyana Vol 16 No 4:243 Pridgeon & M.W. Chase 2001 as Acianthera decurrens;

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

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 Drawing fide;

Orchid Species of Peru Zelenko Bermudez 2009 as Acianthera decurrens photo fide;

Anales Jard. Bot. Madrid 75(1)e069: 13 2018 A taxonomic synopsis of Acianthera (Orchidaceae: Pleurothallidinae) in Peru, including two new species Damian, Chiron and Mitidieri 2018 as Acianthera decurrans;

Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 as Acianthera decurrans photo fide

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