Pleurothallis longispicata L.O.Williams 1946 SUBGENUS Effusae Luer 2000

Plant and Inflorescence

Photos by Alfonso Doucette Copyright 2009,

Drawing

Drawing by Carl Luer

Full shade Cool Cold spring summer

Common Name or Meaning The Long Spiked Pleurothallis

Flower Size .1" [5mm]

Found in Sinaloa and Michoacan states of Mexico in humid montane forest, partially cleared for pasture, etc. on steep volcanic slopes and alluvial flats at elevations of 1700 to 2150 meters as a miniature to small sized, cool to cold growing, caespitose epiphyte with slender, erect ramicauls enveloped by a tubular sheath and 2 to 3 others 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 spring and summer on an erect, arising through a spathe at the apex of the ramicaul, peduncle slender, .2" [5 mm] long, rachis .6" [1,5 cm] long, loose, secund, simultaneously several, many flowered inflorescence with tubular as long as the pedicel floral bracts.

"Closely allied to P resupinata but differs in the proportionally long, lax, secund, successively flowered raceme that far surpasses the leaf. The sepals are fleshy, carinate, dark purple and glabrous, the petals are oblong and the l;ip is three lobed below the middle." Luer 2000

Synonyms Effusiella longispicata (L.O.Williams) Luer 2007; Specklinia longispicata (L.O.Williams) Luer 2004; Stelis longispicata (L.O.Williams) Pridgeon & M.W.Chase 2001

References W3 Tropicos, Kew Monocot list , IPNI ;

* Bot. Mus. Leafl. 12: 240 L O Williams 1946;

Flora Novo-Galaciana Vol 16 Orchidaceae Mc Vaugh 1985 drawing fide;

Icones Pleurothallidinarum Vol III Systematics of Pleurothallis Luer 1986;

An Introdution to the Orchids of Mexico Wiard 1987 photo fide;

Icones Pleurothallidinarum Vol XX Systematics of Jostia, Andinia, Barbosella, Barbrodia & Pleurothallis subgen Antilla, Effusia and Restrepioidia Luer 2000

Icones Pleurothallidinarum Vol XX Systematics of Jostia, Andinia, Barbosella, Barbrodia & Pleurothallis subgen Antilla, Effusia and Restrepioidia Luer 2000 drawing fide;

Lindleyana Vol 16 No 4:264 Pridgeon and Chase 2001 as Stelis longispicata;

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 longispicata;

Icones Pleurothallidinarum Vol XXIX A Third Century of Stelis of Ecuador Luer 2007 as Effusiella longispicata;

AOS Bulletin Vol 86 #7 2017 as Stelis longispicata photo fide;

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