Pleurothallis madisonii Luer 1979 SUBGENUS Acianthera SECTION Brachystachyae Lindl. 1859

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

Common Name or Meaning Madison's Pleurothallis [American discoverer of species]

Flower Size .2" [5 mm]

Found in Valle de Cauca department of Colombia and Carchi province of Ecuador in wet forests at elevations around 1600 to 2100 meters as a small to medium sized, cool to cold growing epiphyte with slender, ascending to erect, terete below, slightly compressed above ramicauls witha tubular sheaths in the lower quarter 1 to 2 others at the base and carrying a single, apical, erect, coriaceous, elliptical, obtuse, shortly acuminate, rounded and decurrent to the ramicaul base leaf that blooms in the fall on a congested, distichous, 2" [5 cm] long including the .2 to .4" [.5 to 1 cm] long peduncle, simultaneously several flowered inflorescence arising through a spathe at the apex of the ramicaul and has an infundibular floral bract.

Synonyms Acianthera madisonii (Luer) Pridgeon & M.W.Chase 2001

References W3 Tropicos, Kew Monocot list , IPNI ; Icones Pleurothallidinarum Vol III Luer 1986; Icones Pleurothallidinarum Vol XXVI Luer 2004 drawing fide; Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 as Acianthera madisonii photo fide; Orquideas de Farallones de Cali Galindo-Tarazona, Haelterman, Zuluaga Trochez and Sebastian Moreno 2020 as Acianthera madisonii photo fide