densely wooded valley, December 8, 1950, Bassett Maguire, R. S. 
Cowan & John J. Wurdack 30035; Cerro de la Neblina, Rio Yatua, 
near Cumbre Camp, in scrub forest along runlet, at 1700 meters alti- 
tude, on rocks and tree trunks, January 5, 1954, Bassett Maguire, 
John J. Wurdack & George S. Bunting 37067; Same locality, along 
escarpment west of Cumbre Camp, at 1700-1800 meters altitude, occa- 
sional terrestrial, Maguire, Wurdack & Bunting 37099; Same locality, 
on Cafio Grande slopes, east of Cumbre Camp, at 1600-1800 meters 
altitude, on limb of low tree, November 22, 1957, Bassett Maguire, 
John J. Wurdack & Celia K. Maguire 42183; Same locality, near Cumbre 
Camp, at 1800 meters altitude, occasional terrestrial in scrub forest, 
November 29, 1957, Maguire, Wurdack & Maguire 42258 (Tyrer in 
Herb. N.Y. Botanical Garden). 
Octomeria dentifera C. Schweinfurth sp. nov. 
Herba parva, caespitosa, saxicola, usque ad 14 cm. 
alta. Caules graciles, breves, pauciarticulati, 5—8 cm. alti, 
vaginis longe tubulatis maxima pro parte obtecti. Folium 
erectum, lineari-lanceolatum vel elliptico-lineare, acut- 
um, sessile, crasse coriaceum, 3.5—6.7 cm. longum, usque 
ad 6 mm. latum. Flores bini ut videtur, axillares, pro 
planta magni, membranacei. Sepala similia, trinervia, 
lanceolata, 10.5-11 mm. longa. Sepalum dorsale acumi- 
natum, usque ad 4.2 mm. latum. Sepala lateralia paulo 
angustiora, leviter obliqua, longe acuminata, usque ad 
3.5 mm. lata. Petala sepalo dorsali similia, ovato-lanceo- 
lata vel elliptico-lanceolata, acuminata, usque ad 10 mm. 
longa et 3.7 mm. lata. Labellum segmentis ceteris multo 
minus, in positu naturali oblongo-ellipticum et 5.4 mm. 
longum, infra medium trilobatum cum lobis lateralibus 
parvis auriculiformibus erectis et lobo intermedio com- 
parate magno, oblongo-ovato, antice subtruncato, mar- 
ginibus irregulariter dentatis; discus in medio cum cari- 
nis binis carnosis. Columna gracilis, arcuata, circiter 4 
mm. alta, in pedem conspicuum producta. 
This species is allied to Octomeria parvula C.Schweinf., 
but is larger throughout with the flower nearly twice as 
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