Pleurothallis subtilis C.Schweinf. 1951 SUBGENUS Pleurothallis SECTION Macrophyllae-Fasciculatae Lindl 1859

Photo by Gerardo Torres and his Flickr Orchid Photo Website

Leaf and Flower

Photo by Alex Mora Mendez


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

Common Name The Delicate Pleurothallis

Flower Size .2" [5 mm]

Found in western Venezuela and eastern Colombia in dense forests at elevations around 1300 to 2650 meters as a mini-miniature to small sized, warm to cold growing epiphyte with a slender, erect ramicaul with a close, tubular sheath below the middle and 2 others at the base and carrying a single, apical, erect, coriaceous, narrowly linear with revolute sides, acute, sessile and shortly cordate below leaf that blooms in the winter, spring and summer on a fascile of successive single flowered inflorescence arising through a spathe.

P subtilis and P calamifolia are very similar vegetatively and differ only in the flowers with P calamifolia having thick petals, especially at the obtuse apex and the lip is proportionally larger, non-verrucose and concave at the end unlike P sutilis which has thin, acute petals and the lip is verrucose and not concave but sharply deflexed apically.

Synonyms Acronia subtilis (C.Schweinf.) Luer 2005; Zosterophyllanthos subtilis (C.Schweinf.) Szlach. & Marg. 2001

References W3 Tropicos, Kew Monocot list , IPNI ; AOS Bulletin Vol 36 #9 1967; Flora de Venezuela Volumen 15 Parte 2 Foldats 1970 drawing fide; Venezuelan Orchids Illustrated Vol 4 Dunsterville & Garay 1972 drawing fide; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing fiide; Icones Pleurothallidinarum Vol 3 Luer 1986; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing fide; Orquideas Nativas del Tachira Cesar Fernandez 2003 photo fide; Icones Pleurothallidinarum Vol 27 Luer 2005 drawing fide as Acronia subtilis; Phytotaxa 308 (1): 080088 Zambrano, Solano and Wilson 2017 photo fide