as specified, and is either rounded or very slightly cordate 
at the base, whereas it was described as ‘‘cordate.’’ The 
petals are noted as acuminate and involute, whereas those 
in the specimens observed are fleshy-thickened above and 
usually with an obtuse or subacute apex. The lip, which 
was described as three-lobed, is really subsimple and 
broadly ovate, rather than ‘‘rhombic’’ as_ specified. 
Moreover, there is a pair of rather prominent calli on 
the disc. 
Cuzco: Prov. of Calea, Vileabamba, in shrubby thickets at 2700 
meters altitude, January 6, 1944, C. Vargas 3947. 
Hvanwco: Mito, at about 2700 meters altitude, on steep south- 
western slope, flowers translucent with dark red opaque lines, July 
8-22, 1922, Macbride & Featherstone 1397; same locality and altitude, 
ledges on shrubby hillsides, April 8-18, 1923, J. Francis Macbride 
3286. 
Pleurothallis carinata C. Schweinfurth sp. nov. 
Herba epiphytica, humilis, cum rhizomate repenti. 
Caules comparate remoti, graciles, unifoliati. Folium 
oblongo-ellipticum, subacutum vel obtusum, basi late 
cuneatum, sessile, carnosum. Inflorescentia axillaris, 
perbrevis, racemosa, biflora ut videtur. Flores lutei, bi- 
labiati. Sepalum dorsale anguste oblongo-lanceolatum, 
acuminatum, parte anteriore incrassata et leviter recurva. 
Sepala lateralia in laminam valde concavam, ovato- 
lanceolatam, acuminatam connata. Petala sepalis multo 
minora, oblongo-lanceolata, acuta, super medium minute 
serrulata, trinervia cum nervis lateralibus intus carinatis. 
Labellum petalis subaequale, oblongo-ovatum, cum lobis 
lateralibus triangularibus parvis erecto-incurvis. Colum- 
na gracilis; clinandrium dentatum. 
Plant epiphytic, rather small. Rhizome creeping, en- 
tirely concealed by close scarious imbricating sheaths, 
with roots which are fibrous, glabrous, elongate, simple. 
Stems about 2 cm. apart, 5.5—6 cm. tall, 1- or 2-jointed, 
ascending from the base which is subparallel to the rhi- 
[ 85 ] 
