umn or to the sepaline tube, about 5.9-7.3 mm. long, 
obliquely acute or obtuse, often with irregular upper 
margins. Lip uppermost, fleshy, tubular-involute in natu- 
ral position, adnate to the sepaline tube, concave-obovate 
when expanded, obtuse, with the free part about 8—9.5 
mm. long: the sides thickened at the base, the upper 
margins erose-denticulate and the outer surface densely 
muriculate. Column elongate, clavate above, about 6.5 
mm. long in front, pubescent, retrorsely geniculate or 
arcuate above, retuse at the apex. 
This species appears to be without close allies. 
Hvuanuco: Mito, at about 2760 meters altitude, ‘‘Bunch-grass up- 
lands’’, April 8-18, 1923, J. Francis Macbride 3357 (Tyrer in Herb. 
Ames No. 58406; Dupticare type in Herb, Field Mus. No. 534427). 
Stenoptera pilifera (H BK.) C. Schweinf. var. par- 
viflora C. Schweinfurth var. nov. 
Herba floribus multo minoribus albidis et bracteis 
longioribus a specie differt. 
Plant up to about 8.5 dm. tall, with only the rem- 
nants of leaves present at flowering time. Stem stout or 
slender, glabrous, mostly or entirely concealed by tubu- 
lar white-hyaline sheaths with a free triangular-acuminate 
apex. Spike thick-cylindric, dense, several- to many- 
flowered, up to 7.7 cm. long. Floral bracts ovate-lanceo- 
late, long-acuminate, white-hyaline, concave, somewhat 
surpassing the flowers (at least in the lower portion). 
Flowers relatively small. Dorsal sepal narrowly elliptic- 
lanceolate, acute, adnate to the column, 3-nerved, about 
10.5 mm. long and 2.2 mm. wide. Lateral sepals connate 
into a neck below; free portion obliquely oblong-oblan- 
ceolate or elliptic-oblanceolate, acute, about 11 mm. long 
and 3 mm. wide, 4-nerved. Petals linear, adnate to the 
sepaline tube, about 9.6 mm. long, subacute, 1-nerved. 
Lip uppermost, long-adnate to the sepaline tube; free 
eyr8 
