guste oblanceolato-oblonga, paulo obliqua, dorso carinata, 
circiter 5-5.6 cm. longa et 1.3. cm. lata. Petala oblongo- 
obovata, apice late rotundata, sepalis latiora, circiter 2-3 
em. lata. Labellum majus, segmenta cetera superans, in 
positu naturali convolutum, expansum  suborbiculari- 
ellipticum, circiter 6-7 cm. longum et 5 cm. latum, apice 
profunde bilobatum; discus carinis pluribus superne la- 
ceris percursus. Columna circiter 3-3.5 cm. alta, apice 
falcula incurva utrinque ornata. 
This species appears to be related to the Peruvian 
Sobralia Weberbaueriana Kriinzl., but has smooth (not 
furfuraceous) sheaths, much smaller leaves and a dis- 
similar lip and column. 
Amazonas: Cerro de la Neblina, Rio Yatua, near Cumbre Camp, at 
1700 meters altitude, occasional on low bushy slopes, “‘roots fleshy ; 
corolla cerise; lip with median yellow line and several white lines; 
column whitish, pink-flushed,’’ January 4, 1954, Bassett Maguire, John 
J. Wurdack & George S. Bunting 37028; Same locality, occasional in 
scrub forest 1 kilometer north of Cumbre Camp, at 1800 meters alti- 
tude, “‘fls. rich pink,’’ January 10, 1954, Maguire, Wurdack & Bunt- 
ing 37202; Same locality, locally frequent in scrub forest near Cumbre 
Camp, at 1800 meters altitude, ‘‘fls. magenta, the lip with subapical 
white area,’’ November 19, 1957, Bassett Maguire, John J. Wurdack 
& Celia K. Maguire 42142 (Tyrer in Herb. Ames No. 69507). 
Stelis latisepala C. Schweinfurth sp. nov. 
Herba pusilla, caespitosa, epiphytica, 4-5 cm. alta. 
Caulis abbreviatus, circiter 83 mm. altus, vaginis laxis 
tubularibus omnino celatus. Folium erectum, oblanceo- 
latum vel obovato-spathulatum, apice rotundatum, ses- 
sile, 8-14 mm. longum, expansum usque ad 4.2 mm. 
latum. Inflorescentia singula, folium multo superans, 
supra laxe pluriflora, usque ad 4.7 cm. longa. Flores 
perparvi, subcarnosi. Sepala transverse rhombico-ovata, 
acuta, trinervia, basi connata. Sepalum dorsale circiter 
2.6 mm. longum et 8 mm. latum. Sepala lateralia similia 
sed minora, valde obliqua, usque ad 2 mm. longa et 2.5 
[199 J 
