Pleurothallis immersa Linden & Rchb. f. 1855 SUBGENUS Specklinia SECTION Effusae Lindl. 1842

Plant Photos by Jay Pfahl

Another Flower Photo by Daniel Jimenez.

Yellow form Photo by Dale and Deni Borders.

Dark Color Form Photo by Tien Pham of V&T Orchids.

Flower Closeup Photo by Joseph Dougherty.

Inflorescence arising from mid rib of leaf Diagnostic Photo by The Healthy Home Gardening Website

to MOSTLY

Common Name The Sunken Pleurothallis [Refers to the hanging Flowers]

Flower Size 1/4 to 1/2" [6 mm to 1.2 cm]

This miniature to small sized, warm to cool growing growing epiphyte is found in Oaxaca, Veracruz and Chiapas states of Mexico, Guatemala, Honduras, Colombia, Venezuela and Ecuador in montane rainforests and elfin forests at altitudes of 800 to 1800 meters with stout stems enveloped basally by 2 brown, scarious sheaths carrying a single, apical, coriaceous, oblong-oblanceolate, obtuse and retuse apically, gradually narrowing below into the conduplicte, petiolate base, lustrous bright green leaves that can bloom several times a year but most often in the summer on an apical, fractiflex, wiry, 6 1/2" to 16" [16 cm to 40 cm] long, racemose inflorescence with several nodding, non-fragrant flowers held longer than the leaves and arising from the midrib at mid leaf.

Very similar to P lehmanneptis but it differs mostly in the inflorescence which arises from the base of the leaf instead of at the mid vein at the middle of the leaf.

Synonyms Effusiella immersa Luer 2007; Humboldtia immersa (Linden & Rchb. f.) Kuntze 1891; Humboldtia krameriana (Rchb.f.) Kuntze 1891 ; Humboltia immersa (Linden & Rchb. f.) Kuntze 1891; Pleurothallis calerae Schltr. 1923; Pleurothallis krameriana Rchb.f. 1865; Pleurothallis lasiosepala Schlechter 1912; Specklinia immersa (Linden & Rchb.f.) Luer 2004; Stelis immersa (Linden & Rchb.f.) Pridgeon & M.W.Chase 2001

References W3 Tropicos Kew Monocot list , IPNI ; Lankester's Epidendra Website CR ; *Bonplandia 3: 224. Rchb.f 1855; Xenia Orchidaceae Vol 3 Reichenbach 1896 drawing; Die Orchideen Schlechter 1915; Repert. Sp. Nov. Regni. Veg. Beih. 19: 184. Costa Rica Schlechter 1923 as P calerae; Orchids of Guatemala and Belize Ames & Correll 1952; Orchids of Guatemala & Belize Ames & Correll 1952; Venezuelan Orchids Vol 3 Dunsterville & Garay 1965 drawing good; Encyclopedia of Cultivated Orchids Hawkes 1965; Flora de Venezuela Foldats Volumen XV Part 2 1970 drawing ok; Orchids of Venezuela, An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing good; AOS Bulletin Vol 49 No 6 1980 photo; Icones Planetarum Tropicarum plate 1112 Dodson 1984 drawing fide; Icones Pleurothallidinarum Systematics of Pleurothallis Vol 3 Luer 1986; Native Colombian Orchids Vol 3 COS 1991 as P immersa photo not = P lehmanneptis; Venezuela; Paraiso de Orquideas Romero 1997 photo fide; Native Colombian Orchids Vol 6 COS 1998 errata = P lehmanneptis; Native Colombian Orchids Vol 6 COS 1998 photo ok; Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing fide; Icones Pleurothallidinarum Vol XX Luer 2000 drawing fide; Lindleyana Vol 16 No 4 2001 as Stelis immersa; Icones Pleurothallidinarum Vol XXVI Luer 2004 as Specklinia immersa; Orchids of Mexico Hagsater etal 2005 as Stelis immersa photo good; Icones Pleurothallidinarum Vol XXIX Luer 2007 as Effusiella immersa; Icones Orchidacearum fascile 10 plate 1096 Hagsater & Soto 2008 as Stelis immersa drawing fide; Orchids of Costa Rica Vol 5 Morales 2009 photo fide; Algunas Orquideas De Mexico Suarez 2012 photo fide; Guia de Orquideas de Chiapas Carlos Rommel Beutelspacher Baigts 2013 as Stelis immersa photo fide

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