Pleurothallis villosa Knowles & Westc.1838 SUBGENUS Specklinia SECTION Effusae Lindl. 1842 Photo by Luis Mincitar and his Flickr Orchid Photo Website


Common Name The Hairy Pleurothallis

Flower Size 3/8" [1 cm]

Found in Mexico, Guatemala, El Salvador, Honduras and Costa Rica as a mini-miniature sized, epiphyte at elevations of 1500 to 2500 meters with erect, slender, slightly compressed above ramicauls enveloped by a tubualr sheath below the middle and 2 to 3, shorter sheaths above the base and carrying a single apical, erect, coriaceous, elliptical, subacute to obtuse, cuneate below into the sessile base leaf that blooms in the summer on a apical,lax, distichous, subflexuous, 2 to 3.6" [5 to 9 cm] long, successively single, few flowered inflorescence that holds the successive opening, single flowers just above the leaves. Cool temperatures, shade, and high humidity as well as mounting on tree fern, and good air movement assure a happy plant.

This species has often been confused with P ornata which has white appendages on the sepal margins, but this is the species that Knowles & Westcott described as a plant 4" high, a flexuous scape and at each bend bearing a wooly and purple spotted flower. No mention of appendages or lamellae which most modern references show as P villosa [schiedei] but are actually P ornata. Rchb.f in his description of P villosa [schiedei] states that it is a wooly flower which would eliminate it as a candidate for what we now know as P ornata which Rchb.f described as having short ramicauls and with conspicuous, unique, clavate appendages on the sepal margins.

Synonyms Effusiella villosa (Knowles & Westc.) Luer 2007; Humboldtia schiedei (Rchb.f.) Kuntze 1891; Humboltia schiedei (Rchb. f.) Kuntze 1891; Humboldtia villosa (Knowles & Westc.) Kuntze 1891; Humboltia villosa (Knowles & Westc.) Kuntze 1891; Pleurothallis hirsuta Ames 1908; Pleurothallis schiedei Rchb. f. 1849; Specklinia villosa (Knowles & Westc.) Luer 2004; Stelis villosa (Knowles & Westc.) Pridgeon & M.W.Chase 2001

References W3 Tropicos, Kew Monocot list , IPNI ; Symbolae Antillanae Vol VI Orchidaceae Urban 1909; Repert. Sp. Nov. Regni. Veg. Beih. 19: 197. Costa Rica Schlechter 1923; AOS Bulletin Vol 30 No 5 1961; AOS Bulletin Vol 31 No 7 1962 as P schiedei photo good; Las Orquedias De El Salvador Vol 2 Hamer 1974 as P schiedei drawing/photo not = P ornata; Miniature Orchids Northen 1980 photo not = P ornata; Las Orquideas de El Salvador Vol 3 Hamer 1981 as P schiedei drawing not = P ornata; AOS Bulletin Vol 53 No 6 1984 photo as P schiedei; Flora Novo-Galaciana Vol 16 Orchidaceae Mc Vaugh 1985 as P schiedei not =P ornata; An Introdution to the Orchids of Mexico Wiard 1987 as P scheidei photo not = P ornata; Systematics of Pleurothallis Vol 3 Luer 1986 as P schiedei; AOS Bulletin Vol 57 No 2 1988 photo as P schiedei; AOS Bulletin Vol 62 No 1 1993 as P schiedei photo not = P ornata; Orchid Digest Vol 58 No 4 1994 photo fide as P schiedei; AOS Bulletin Vol 64 #12 1995 as P scheidei photo not = P ornata; Lindleyana Vol 16 No 4 2001 as Stelis villosa; Manual de Plantas de Costa Rica Vol 3 Hammel, Grayum, Herrera and Zamora 2003; Icones Pleurothallidinarum Vol XXVI Luer 2004 as Specklinia villosa; Orchdis of Mexico Hagsater etal 2005 as S villosa photo not = P ornata; Icones Pleurothallidinarum Vol XXIX Luer 2007 as Effusiella villosa; Mille et Une Mini Orchideees Roguenant 2009 photo not = Pleurothallis ornata