Cuzco: Prov. of Quispicanchis, Murayacu, Marcapata, at 1300- 
1600 meters altitude, December 12, 1943, C. Vargas 3757 (Typrr in 
Herb. Ames No. 63358). 
Pleurothallis carnosifolia C. Schweinfurth sp. nov. 
Herba humilis, inconspicua. Caules caespitosi, breves, 
unifoliati, vaginis pluribus tubulatis omnino obtecti. 
Folium erectum, oblanceolatum vel anguste ellipticum, 
carnosissimum, in siccitate saepissime conduplicatum, 
acutum vel subacutum, sessile. Inflorescentiae axillares, 
fasciculatae, racemosae, perlaxe pauciflorae, quam folium 
saepissime longiores. Flores pro planta grandes. Sepala 
lineari-lanceolata, acuminata, acuta, dorso conspicue 
carinata. Petala sepalis similia sed minora. Labellum 
parvum, simplex, in positu naturali leviter recurvum, 
cum lateribus basalibus erectis, expansum lanceolato- 
ovatum, acutum, basi rotundatum. Columna perparva, 
in pedem producta. 
Plant low, inconspicuous, up to 8 cm. tall. Roots 
numerous, fibrous, glabrous. Stems caespitose, short, 
unifoliate at the apex, entirely concealed by about five 
imbricating tubular sheaths, up to about 8 cm. tall. 
Leaves erect, oblanceolate or narrowly elliptic, very 
fleshy, usually conduplicate in the dried specimen, acute 
or subacute, gradually narrowed to a sessile base, up to 
5.5 em. long and from 1 to 1.4 cm. wide. Inflorescences 
axillary, fascicled, racemose, four to seven, filiform, com- 
monly longer than or subequaling the leaf, very loosely 
3- to 5-flowered. Flowers large for the plant, fleshy, 
yellow and coffee-color, campanulate. Sepals conspicu- 
ously carinate without. Dorsal sepal linear-lanceolate, 
long-narrowed to an acute apex, concave below, 3-nerved, 
about 9.5 mm. long and 2.6 mm. wide. Lateral sepals 
very similar, about 9.5 mm. long and 2.2 mm. wide. 
Petals similar to the sepals but smaller, linear-lanceolate, 
acuminate, 1-nerved, locally erose-dentate, about 7.6 
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