Pleurothallis macrorhiza Lindl. 1834 SUBGENUS Xenion

Plant and Flowers

Photos by Ecuagenera and their Ecuador Orchid Website

Drawing

Drawing by © Carl Luer

THROUGH

Common Name The Big Rhizome Pleurothallis

Flower Size .4" [1 cm]

Found in Cauca department of Colombia, Azuay, Morona-Santiago, Chimborazo, and Pichincha provinces of Ecuador andAncash, Chiclayo, Chichapalca and Piura departments of Peru in very wet, montane cloud forests at elevations of 1800 to 3200 meters as a small sized, cool to cold growing, repent epiphyte with a stout, ascending-erect ramicauls enveloped by 2 to 3 loose, tubular sheaths and carrying a single, apical, erect, thickly coriaceous, narrowly elliptical, acute to subacute, narrowing below into the ill-defined petiolate base leaf that blooms in the spring through fall on 1 to 3, slender, 2" [5 cm] long, loose, successively single, few flowered inflorescence with a shorter than the pedicel to longer than the ovary floral bract.

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Synonyms Andinia spiralis (Ruiz & Pav.) Karremans & Mark Wilson 2017; Humboldtia macrorhiza (Lindl.) Kuntze 1891; *Humboldtia spiralis Ruiz & Pav. 1798; Pleurothallis spiralis (Ruiz & Pav.) Lind. 1830; Xenosia macrorhiza (Lindl.) Luer 2006; Stelis spiralis (Ruiz & Pav.) Pers. 1807; Xenosia spiralis (Ruiz & Pav.) Luer 2004

References W3 Tropicos, Kew Monocot list , IPNI ;

* J. Bot. (Hooker) 1: 9 Lindley 1834

Selbyana 1: 294 Luer 1975 as Pleurothallis spiralis drawing fide

Die Orchideen der Sudamerikanischen Kordillerenstaaten III Ecuador Schlechter 1921 as P rhizomatosa;

Orchids of Peru Vol 1 Schweinfurth 1958 as Stelis spiralis;

Orchids of Peru Vol 2 Schweinfurth 1959;

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

Icones Orchidacearum Peruviarum Plate 166 Bennett & Christenson 1993 as Pleurothallis spiralis 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 Xenosia spiralis;

Icones Pleurothallidianrum Vol XXVIII A Reconsideration of Masdevallia Systemtics of Specklinia Luer 2006 as Xenosia macrorhiza

Icones Pleurothallidianrum Vol XXVIII A Reconsideration of Masdevallia Systemtics of Specklinia Luer 2006 as Xenosia macrorhiza drawing fide;

Pleurothallids Neotropical Jewels Vol 1 Karremans & Viera 2020 as Andinia spiralis photo fide

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