Pleurothallis xanthochlora Rchb.f. 1850 SUBGENUS Pleurothallis SECTION Pleurothallis SUBSECTION Longiracemosae [Luer] Luer 1998

Photo by © Karl Senghas and Swiss Orchid Foundation at the Jany Renz Herbaria Website

Drawing

Drawing by Carl Luer

Full shade Cool Cold LATEWinter THROUGHSummer

Common Name The Yellow Green Pleurothallis

Flower Size .2" [5 mm]

Found in Merida and Zulia states of Venezuela, Cundinamarca department of Colombia, Carchi, Pastaza, Pichincha and Tungurahua provinces Ecuador, San Martin, Cuzco, Junin and Ayacucho departemtns of Peru and La Paz and Cochabamba departments of Bolivia at elevations around 1200 to 2300 meters as a medium sized, cool to cold, repent growing epiphyte with slender to stout, erect ramicauls enveloped by a tubular sheath near the middle and 2 to 3 others at the base and carrying a single, apical, erect, coriaceous, elliptical, acute, slightly acuminate, cuneate below into the sessile base leaf that blooms in the late winter through summer on 1 to 4, arising through a spathe at the base of the leaf, distichous, 6 to 12" [15 to 30 cm] long, subdensely, simultaneously many flowered inflorescence with a tubular, shorter than the pedicel floral bract.

"The long roots are produced along a stout, shortly creeping rhizome giving rise to an erect ramcicaul carrying a large, elliptic leaf that blooms on a many flowerd raceme arising from the cuneate base of the leaf. The synsepal is concave, but not deeply so, the petals are narrow, but not thickened and the lip is ovate, shallowly concave and subverrucose at the acute apex, The base is truncate and shallowly concave on end. Luer 1999

Synonyms Humboltia xanthochlora (Rchb.f.) Kuntze 1891; Pleurothallis dolichocaulon Schltr.1922; Pleurothallis huanucoensis Schltr. 1921;

References W3 Tropicos, Kew Monocot list , IPNI

Venezuelan Orchids Illustrated Vol 2 Dunsterville & Garay 1961 drawing good;

AOS Bulletin Vol 36 #9 1967;

Flora de Venezuela Volumen 15 Parte 2 Foldats 1970 drawing good;

Selbyana 3: 200 Luer 1976 drawing fide;

Orchids of Venezuela An Illustrated Field Guide Vol 3 Dunsterville & Garay 1979 drawing good;

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;

Orchids of Bolivia Vasquez & Ibisch Vol 1 2000 photo hmm/drawing ok;

Orchids of Venezuela [An illustrated field guide] Vol. 3 Ramiro and Carnevali 2000 drawing good;

Macchu Picchu Orchids Eric Christenson 2003;

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