Pleurothallis sanluisii Foldats 1968 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Acroniae SERIES Acroniae Luer 1988

Inflorescence

Photos by S Manning and The Swiss Orchid Foundation at the Jany Renz Herbaria Website

Drawing

Drawing by Carl Luer

Common Name The Sierra de San Luis Pleurothallis [A mountain in Venezuela where the species was first collected]

Flower Size .2" [5 mm]

Found in northeastern Colombia and Falcon State of northwestern Venezuela at elevations around 1400 to 1500 meters as a miniature to small sized, warm to cool growing, caespitose epiphyte with slender, erect, ramicauls enveloped with a close, tubular sheath below the middle and 2 to 3 others at the base and carrying a single, apical, erect, coriaceous, ovate, convex, acute, rounded and shallowly cordate below into the sessile base leaf that blooms in the summer on an erect to suberect, lax, distichous, arising through a slender spathe at the base of the leaf, 2.8 to 4" [7 to 10 cm] long including the 1.6" [ 4 cm] long peduncle, simultaneously few to several flowered inflorescence with less than half as long as the pedicel floral bract.

"Characterized by the loose raceme of small, dotted, long-pedicellate flowers that more or less equals to surpasses tha leaf in length. The petals are decurved and subsigmoid. A small conical callus is present above the base of the lip between erect, rounded lateral lobes. Vegetatively P longipedicellata is similar but the flowers are unspotted, the petals are not decurved and the lip does not have erect, rounded lateral lobes with a conical callus between. The

This species can be color variable in the flower with sepals and petals from brown, light brown, brownish to golden yellow and can have none to pale to dark maroon spotting and the nerves can be inconspicuous to somewhat thickened and are sometimes colored light to dark maroon.

Synonyms Acronia sanluisii (Foldats) Luer 2005; Pleurothallis stalkyi Luer 1982

References W3 Tropicos, Kew Monocot list , IPNI ;

*Acta Bot. Venez. 3: 390 Foldats 1968;

Flora de Venezuela Foldats Volumen XV Part 2 1970 drawing fide;

Orchids of Venezuela An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing not = P tenebrosa;

Venezuelan Orchids Illustrated Vol 5 Dunsterville and Garay 1972 as P longipedicellata drawing fide;

Orchids of Venezuela A Field Guide Dunsterville & Garay 1979 drawing not = P tenebrosa;

Orchids of Venezuela A Field Guide Dunsterville & Garay 1979 as P longipedicellata drawing fide;

Selbyana 7: 124 Luer 1982 as P stalkyi;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986 as P stalkyi;

Icones Pleurothallidinarum Vol XVII Systematics of Subgen Pleuorthallis Sect Abortivae Sect Truncatae Sect Pleurothallis subsection Acroniae Subsect Pleurothallis Subgen Dracontia Subgen Uncifera Luer 1998 ;

Icones Pleurothallidinarum Vol XVII Systematics of Subgen Pleuorthallis Sect Abortivae Sect Truncatae Sect Pleurothallis subsection Acroniae Subsect Pleurothallis Subgen Dracontia Subgen Uncifera Luer 1998

Icones Pleurothallidinarum Vol XVIII Systematics of Pleurothallis subgen Pleurothallis, sect Pleurothallis subsect Antenniferae subsect Longiracemosae subsect Macrophyllae-Racemosae subsect Perplexae subgen Pseudostellis subgen Acuminatia Luer 1999;

Icones Pleurothallidinarum Vol XXVII Systematics of Dryadella Systematics of Macrophyllae-Fasciculatae Luer 2005 as Acronia sanluisii;

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