late, about 7.5 mm. long and 4 mm. wide, 8-nerved, 
dorsally carinate toward the base. Lateral sepals obliquely 
lanceolate, spreading but not reflexed, 8.2-9 mm. long, 
about 8.2—4 mm. wide, strongly concave, 8-nerved. Pet- 
als bipartite; posterior lobe falcate, lanceolate-linear, 
5.9-6.38 mm. long, about 1.65 mm. wide near the slightly 
dilated base, obliquely obtuse, 2-nerved; anterior lobe 
linear, longer than the posterior lobe and subparallel to 
it, strongly incurved toward the apex, about 8.5-9.5 
mm. long from the sinus of the lobes to the apex when 
expanded, 1-nerved. Lip tripartite; lobes parallel; lateral 
lobes narrowly linear, about 8.2 mm. long, 1-nerved; 
middle lobe stouter but somewhat shorter, linear, 7 mm. 
long, obliquely obtuse, fleshy, 8-nerved. Spur very small, 
cylindric, rounded at the apex, 2.2 mm. long, about 1 
mm. wide across the slightly dilated base. Stigmatic 
processes very short. Ovary slender, 6-sulcate. 
Habenaria parvicalcarata is remarkable for its abbre- 
viated spur, and appears to lack close allies. It was de- 
scribed from a single dried plant. 
Cuzco: Paso de Tres Cruces, Cerro de Cusilluyoc, at 3800-3900 
meters altitude, open grassy paramo, May 8, 1925, Francis W. Pennell 
13888. (Type in Herb. Ames No. 38279). 
Habenaria pumiloides C. Schweinfurth sp. nov. 
Herba terrestris, humilis. Radices tuberosae. Caulis 
foliis paucis approximatis patentibus, basi vaginis solum 
ornatus. Racemus brevis, densus vel subdensus, usque 
ad tredecimflorus. Sepalum dorsale late ovatum, cucul- 
latum. Sepala lateralia oblique ovato-lanceolata, reflexa. 
Petala bipartita; lobus posterior major, lanceolato-oblon- 
gus; lobus anterior linearis, incurvatus. Labellum tri- 
partitum, lobis parallelis vel lateralibus divergentibus ; 
lobi laterales filiformes ; lobus intermedius major, linearis. 
Plant low, up to about 19 em. high (excluding rooting 
portion), terminating in a stout tuberoid, erect. Roots 
[ 53 | 
