Pleurothallis cogniauxiana Schltr. 1907 SUBGENUS Acianthera [Scheidw.] Luer 1986

Photo by Ricardo Marin Thiele and his Flickr Orchid Photo Webpage

Another Inflorescence

Photo by Daniel Jimenez G. in Costa Rica

TYPE Drawing of P congruens

TYPE Drawing of P congruens by Carl Luer

TYPE Drawing

TYPE Drawing by Carl Luer

Common Name Cogniaux's Pleurothallis [Belgian Botanist 1800's to early 1900's]

Flower Size .2" [5 mm]

Found in Nicaragua, Costa Rica and Panama at elevations of 1000 to 2000 meters as a miniature to just medium sized, warm to cool growing, shortly repent epiphyte with erect, slender ramicauls naked or with 1 to 2, basal sheaths with 2 to 3, narrow, but prominent wings and carrying a single, apical, fleshy, elliptic-lanceolate to ovate-lanceolate, acuminate, cordate below into the base leaf that blooms in the winter through summer on 1 to 2, arising through a spathe, to 2" [5 cm] long, shorter than the leaf, distichous, racemose, few to 8 flowered inflorescence with as long as to slightly longer than the ovary floral bracts.

"The ramicaul is compressed, but varies from narrowly to broadly winged. The leaf is sessile but varies from broadly ovate and deeply cordate at the base to narrowly oblong and cuneate at the base. The raceme is a short, crowded, distichous raceme. The flowers are spotted and vary in minor details but there is no correlation with the vegetative varieties." Luer 2004

Synonyms Acianthera cogniauxiana (Schltr.) Pridgeon & M.W.Chase 2001; Acianthera congruens (Luer) Pridgeon & M.W.Chase 2001; Pleurothallis congruens Luer 1978

References W3 Tropicos, Kew Monocot list , IPNI ;

* Repert. Spec. Nov. Regni Veg 3(42-43): 246 Schltr. 1907;

The Orchids of Panama L.O. Williams & P Allen 1946;

Selbyana 2(4): 391. Luer 1978 as P congruens drawing fide;

Icones Planetarum Tropicarum Plate 218 Dodson 1980 as P congruens drawing good;

Icones Planetarum Tropicarum Plate 1092 Hamer 1984 drawing fide;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986 as P congruens;

Icones Planetarum Tropicarum Plate 1379 Atwood 1989 drawing good;

AOS Bulletin Vol 63 # 1 1994 photo fide;

Lindleyana Vol 16 No 4:243 Pridgeon & M.W.Chase2001 as Acianthera cogniauxiana;

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

Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003 drawing fide;

Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera aand 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 aand Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 Drawing fide;

Vanishing Beauty, Native Costa Rican Orchids Vol 1 Pupulin 2005 as Acianthera cogniauxiana photo fide;

Orchids of Costa Rica Vol 1 Morales 2009 photo fide;

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

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