Pleurothallis antennifera Lindl. 1859 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Antenniferae Luer 1998 TYPE for the SUBSECTION

Photo by © Alexander Reynolds and INVENTORY OF THE VASCULAR PLANTS OF MAQUIPUCUNA, ECUADOR.

Full shade Cold spring summer

Common Name The Antenna Bearing Pleurothallis [refers to the erect petals]

Flower Size .2" [5 mm]

Found in Colombia, Ecuador, Peru and Bolivia at elevations of 2400 to 3350 meters as a small to medium sized, cold growing epiphyte with slender, occasionally proliferating, ascending to erect ramciauls enveloped by a tubular sheath above the middle, another below the middle and another at the base and carrying a single, apical, erect, coriaceous, elliptical-ovate, acute, broadly cuneate below into the sessile base leaf that blooms in the spring and summer on 1 to 2, erect, strict, subcongested, secund, 2.8 to 11.2" [7 to 28 cm] long, simultaneously many flowered, racemose inflorescence arising through a spathe and has oblique, acute floral bracts.

This species is easily recognized by the usually repent rhizome, the long erect ramicauls with a sheath above the middle and another below the middle, and 1 to 2, densely flowerwed racemes of yellow to green flowers with very narrow petals that are as long as the sepals and protrude from either side. The lip is three-lobed and has incurved lateral lobes that vary in length and width.

Synonyms Humboldtia antennifera (Lindl.) Kuntze 1891; Humboldtia cyclochila (Lindl.) Kuntze 1891; Humboldtia incurva (Lindl.) Kuntze 1891; Pleurothallis cyclochila Lindl. 1859; Pleurothallis incurva Lindl.1859

References W3 Tropicos, Kew Monocot list , IPNI ;Orquideas de Farallones de Cali Galindo-Tarazona, Haelterman, Zuluaga Trochez and Sebastian Moreno 2020 photo fide Orchids of Peru Vol 2 Schweinfurth 1959; Flora de Venezuela Volumen 15 Parte 2 Foldats 1970 as P incurva; Orchidaceae Brasilensis Band 1 Pabst & Dungs 1975 drawing hmm; Venezuelan Orchids Illustrated Vol 6 Dunsterville & Garay 1976 drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing fide; Systematics of Pleurothallis Vol 3 Luer 1986; Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-Racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999 drawing fide; Orchids of Bolivia Vol 1 Pleurothallidinae Vasquez & Ibisch 2000 drawing fide; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing fide; Orchids of Bolivia Vol 1 Ibisch & Vasquez 2000 drawing good; Orquideas Nativas del Tachira Cesar Fernandez 2003 photo fide; Orchid Species of Peru Zelenko & Bermudez 2009 photo fide;

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