Pleurothallis ramulosa Lindl. 1859 SUBGENUS Acuminatia SECTION Acuminatae Luer 1986

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

LATER

Common Name The Branched Pleurothallis [refers to the prolific plant habit]

Flower Size .4" [1 cm]

Found in Ecuador, Colombia and northwestern Venezuela at elevations around 1500 to 2700 meters as a mini-miniature to small sized, cool to cold growing, caespitose below, prolific above epiphyte with slender to stout, erect, prolific ramicauls enveloped by a thin, tubular sheath below the middle and 2 to 3 other ones at the base and carrying a single, apical, erect, coriaceous, elliptical, subacute to obtuse, cuneate below into the petiolate base leaf that blooms in the later spring through fall on a loose, arising through a spathe from an annulus below the apex of the ramicaul, subsecund, slender, strict, up to 4 to 10" [10 to 25 cm] long including the .8 to 2" [2 to 5 cm] long peduncle, simultaneously several to many flowered inflorescence with a longer than the pedicel floral bract and carrying sweet scented flowers.

This species is very similar to P sclerophyla in most all respects other than the scandent habit of this species. The distinguishing feature of the flowers is that P ramulosa has an oblong lip without the midline callus and without tall sidelobe margins below the middle. The apex of the column is not as beaked as in P sclerophylla.

Synonyms Anathallis ramulosa (Lindl.) Pridgeon & M.W.Chase 2001; Humboltia ramulosa (Lindl.) Kuntze 1891; Pleurothallis superposita Schltr. 1916; Specklinia ramulosa (Lindl.) Luer 2004; Stelis catenata Karremans 2014

References W3 Tropicos, Kew Monocot list , IPNI ;

*Fol. Orchid. 9: 33 Lindley 1859;

Revis. Gen. Pl. 2: 668 Kuntze 1891 as Humboltia ramulosa;

Repert. Spec. Nov. Regni Veg. 14: 386 Schlechter 1916 as Pleurothallis superposita

Selbyana 3: 178 Luer 1976 drawing fide;

Icones Pleurothallidinarum Vol I Systematics of thePleurothallidinae Luer 1986;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-Racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999

Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subsection Antenniferae, Longiracemosae, Macrophyllae-Racemosae and Subgenera Pseudsostelis and Acuminata Luer 1999 drawing fide;

Lindleyana Vol 16 No 4:250 Pridgeon & M.W.Chase 2001 as Anathallis ramulosa ;

Native Ecuadorian Orchids Vol 4 Dodson 2003 drawing fide;

Icones Pleurothallidinarum Vol XXVI Pleurothallis subgenus Acianthera and Three Allied subgenera, A Second Century of new Species of Stelis of Ecuador, Epibator, Ophidion and Zootrophion Luer 2004 as Specklinia ramulosa;

LANKESTERIANA 13(3): 319332 Kerremans 2014 as Stelis catenata

Orchid Digest Vol 80 #2 2016 as Anathallis ramulosa;

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