TROPICAL AMERICAN ORCHIDS 
lanceolato-elliptica. Petala longe unguiculata, oblique trian- 
gularia. Labellum longissime unguiculatum; lamina reni- 
formis trilobata, lobo medio minore. Columna generis. 
Plant slender, about 17.5 cm. tall to the tip of the apical 
flower. Roots fasciculate, lanuginose. Leaves basal, rosu- 
late, two to three, 3.1-5.2 cm. long, 1.6-2.3 cm. wide, el¬ 
liptic-ovate, acute, membranaceous, cuneate-narrowed to a 
sulcate petiole. Petiole sheathing the stem at base, the free 
part 1.5 cm. or less long. Scape far exceeding the leaves, 
gently arcuate, pubescent, especially so above, with three 
distant tubular sheaths of which the lowest is foliaceous. 
Peduncle below the raceme 8-12 cm. long. Inflorescence 
loose; rachis pubescent, 3.7 cm. long, ll-flowered. Pedi¬ 
cellate ovary spreading, pubescent. Flower very small, 
membranaceous. Sepals 3-nerved, sparsely villous on the 
outside. Lateral sepals oblong-ovate, oblique, 5 mm. long, 
2.1-2.5 mm. wide, acute to obtuse. Dorsal sepal a little 
smaller, lanceolate-elliptic, acute. Petals with long and 
slender claws, obliquely triangular, about 5 mm. long 
(including the claw), about 2.1 mm. wide across the dilated 
portion, the apex truncate, the exterior angle dilated. La¬ 
bellum long-clawed; claw inserted on the column, chan¬ 
nelled, about 2 mm. long; lamina reniform in outline, 3-lobed, 
cordate at base, about 2 mm. long, 2.2 mm. wide when spread 
out; lateral lobes rounded-dolabriform, spreading; middle 
lobe one third smaller, ligulate, rounded, and slightly dilated 
above. Column about 2.9 mm. long. 
The nearest allies of Ponthieva unguiculata are P. mon- 
tana Lindl. and P. Weberbaueri Schltr. P. montana is dif¬ 
ferentiated by shorter clawed petals, ciliate sepals, and dis¬ 
similar lip. P. Weberbaueri has much larger flowers and a 
differently shaped labellum. 
Bolivia, Yungas, H. H. Rusby 2767, 1885. 6000 feet 
altitude. (Type in Herb. Acad. Nat. Sci. Phila.) 
Malaxis pusilla A. & S. sp. nov. Herba pusilla. 
Caulis basi bulbosus, monophyllus. Folium elliptico-ovatum, 
patens. Scapus gracilis, quadrialatus. Racemus brevis, 
laxus. Sepala lateralia obliquissime elliptico-ovata, apice 
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