different lobing. It differs from the Bolivian MW. simaco- 
ana Schltr. in having lanceolate, not linear, petals, and 
dissimilar lobes of the lip. 
Junin: Prov. of Tarma, Vitoc, at 1400 meters altitude, ‘‘a most 
common, epiphytie species with a wide distribution in the region of 
Chanchamayo from ca. 900-1,400 m. a.s. level,’’ leaves pale green 
with a bluish tint, sepals and petals white with a delicate yellow 
green hue, lip white with purple margins and a white tip, column 
with a pale pink tip and a deep purple orifice and base, December 
1942, F. Woytkowski 2 (Type in Herb. Ames No, 65455). 
Trichopilia gracilis C. Schweinfurth sp. nov. 
Herba epiphytica, mediocris. Rhizoma abbreviatum. 
Pseudobulbi numerosi, congesti, anguste cylindracei, uni- 
foliati. Folium lineari-oblongum vel elliptico-oblongum, 
acutum, infra breviter angustatum. Inflorescentia basalis, 
suberecta, laxissime bi- vel triflora, quam folium brevior. 
Flos minor, campanulatus, albus. Sepala longitudinaliter 
concava, crassiora. Sepalum dorsale lineare vel lanceolato- 
lineare, acuminatum. Sepala lateralia libera, linearia vel 
lanceolato-linearia, leviter decurva, longe acuminata, 
quam sepalum dorsale angustiora. Petala lanceolato- 
linearia, leviter decurva, acuminata, sepalis paulo brevi- 
ora. Labellum circa columnam infra convolutum, expan- 
sum oblongo-obovatum, apice late rotundatum, utrinque 
supra leviter contractum. Columna_ perbrevis, apice 
erecto denticulato. 
Plant epiphytic, medium-sized for the genus, about 29.5 
em. or less high. Rhizome abbreviated. Roots fibrous, 
rather stout, glabrous. Pseudobulbs caespitose, numer- 
ous, narrowly cylindric, sometimes more or less arcuate, 
unifoliate at the apex, 5-11 cm. long and up to 9 mm. 
wide, striate-suleate, concealed at the base by a few firm 
evanescent sheaths. Leaf linear-oblong to elliptic-oblong, 
acute, shortly narrowed below to a sessile or shortly 
petioled complicate or conduplicate base, subcoriaceous, 
[ 168 ] 
