Pleurothallis undulata Poepp. & Endl. 1836 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859 Photo by S Manning and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Drawing Original Drawing by Padre Pedro Ortiz Conserved at the Herbario de la Universidad Javeriana, Bogota Colombia

Common Name The Undulate Pleurothallis [refer to the margins of the dried leaf]

Flower Size .6" [1.5cm]

Found in Peru in dense forests at elevations around 600 to 1900 meters as a miniature to small sized, warm to cool growing epiphyte or terrestrial on steep embankments with slender, erect ramicauls enveloped by a close, tubular sheath below the middle and 2 others at the base and carrying a single, apical, spreading, horizontal, thickly coriaceous, cordate-ovate, acute, deeply cordate and sessile base leaf that blooms at most any time of the year on a fascile of successive, single flowered inflorescence arising through a spathe and has tubular floral bracts.

Synonyms Acronia undulata (Poepp. & Endl.) Luer 2005; Humboldtia undulata [Poepp. & Endl.] Kuntze 1891; Pleurothallis junininensis Schlechter 1921; Zosterophyllanthos undulatus [Poepp. & Endl.] Szlach. & Marg. 2001

References W3 Tropicos, Kew Monocot list , IPNI ; Bonplandia Rchb.f 1854; Die Orchideen der Sudamerikanischen Kordillerenstaaten IV Peru Schlechter 1921 as P juninensis; Orchids of Peru Vol 2 Schweinfurth 1959; Flora de Venezuela Volumen 15 Parte 2 Foldats 1970; Venezuelan Orchids Illustrated Vol 4 Dunsterville & Garay 1972 not = P coriacardia; Venezuelan Orchids Illustrated Vol 6 Dunsterville & Garay 1976 as P cardiantha drawing ok; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 not = P coriacardia; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 as P cardiantha drawing ok; Icones Planetarum Tropicarum Plate 266 Dodson 1980 drawing ok; Icones Pleurothallidinarum Vol 3 Luer 1986; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing ok; Icones Pleurothallidinarum Vol 27 Luer 2005 drawing ok as Acronia undulata;