Pleurothallis hartwegii Lindley 1842 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Macrophyllae-Racemosae [Lindl] Luer 1986

Drawing by Carl Luer and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Common Name Hartweg's Pleurothallis [German Orchid Collector in Mexico 1800's]

Flower Size .4" [1 cm]

Found in Cauca department of Colombia and Loja and Zamora-Chinchipe provinces of Ecuador at elevations around 2200 to 2400 meters as a medium to large sized, cold growing, caespitose epiphyte with erect, stout ramicauls with a close tubular sheath below the middle and 2 to 3 others at the base and carrying a single, apical, erect, coriaceous, narrowly obovate, acute, narrowly cuneate below into the sessile base leaf that blooms in the fall on a dense fascile, arising through a fugaceous spathe at the base of the leaf, .4" [1 cm] long including the .2" [5 mm] long peduncle, 1 to loosely 2 flowered inflorescence with an inflated, as long as the pedicel floral bract.

"Characterized by the stout ramicaul carrying a long, narrowly obovate leaf blooming on a dense fascile of remnants of old inflorescence at the base of the leaf. Short 1 to 2 flowered racemes appear sporadically. The flowers are similar to those of P archidonae but the lip is concave with a minutely denticulate margin and a shortly acuminate, incurved lip." Luer 1999

Synonyms Humboltia geniculata (Lindl.) Kuntze 1891; Humboltia hartwegii (Lindl.) Kuntze 1891; Pleurothallis geniculata Lindl. 1859

References W3 Tropicos, Kew Monocot list , IPNI ;

Flora de Venezuela Foldats Volumen XV Part 2 1970;

Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999

Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999drawing fide;

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