New SPECIES OF SOUTH AMERICAN PLANTS 5 
Petioles 6 to 8 cm. long, pue channeled above, strongly 
sulcate, the blades 1 dm g from petiole to summit, ovate, 
regularly cordate, the inni basal lobes descending 2 cm. 
below the summit of the petiole, the sinus about 1 cm. broad, 
oun above, the summit of the leaf abruptly contracted 
into a deltoid very acute point, the blade oni 7-nerved, with 
an additional pair into the basal lobes, the nerves d 
lightly prominent above, sharply so an re eath. Racem 
simple, mostly solitary, I eds sessile, the 
rachis sharply angled, rather closely flowered, the r por- 
tion falcately curved, roughene ower scars and th 
persistent subulate bractlets, which are a g 
lowers mostly solitary on recurved pedicels about 1.5 l 
the flowers abou , dark-colored, the bractlets 
triangular-ovate, acuminate and acute, as long as the pedicels. 
Perigone lobed nearly to the base, the lobes broadly ovate with 
rounded summit. Stamens 6, half the length of the perigone 
tube, the filaments broad, connate below, the anthers large, 
their cells contiguous. Staminodia none. 
Pistillate Plant.—Racemes solitary or 2 or 3 together, 2 dm. 
or more long, very —€— aed  peduncled, loosely flowered, 
the bracts similar to thos the staminate plant, about half 
the length of the ovary, which is ae e. about 3.5 mm. 
long, strongly nerved. Perigone I to mm. broad, ihe lobes 
Pater ovate, obtuse Styles ut about half-way, the 
mmits recurved, sto ntire. Fruits 13 mm. long, a little 
more than half as bet elliptical, tipped with the persistent 
perigone. 
The staminate plant is the type. Of it, Smith says "Twin- 
ing to I5 feet, in damp forest near Agua Dulce, 2200 feet, Oc- 
tober r9." (Herbert Smith, Colombia, No. 2557.) Of the 
pistillate plant, “A vine to 15 feet, in dry forest near Bonda, 
150 feet. November 16. Probably the same as No. 2557.’ 
No. 2633.) 
Dioscorea frutescens. 
Pistillate Plant.—Glabrous, the ai ae very stout, lightly 
but sharply angled. Petioles t cm. long, ut, 
channelled, mod e Lea s ik and rigid, 5 t 
lo 4 t . broad, ovate, broadly and shallowly. cordate 
neath. Racemes solitary or 2 together, 12 to 18 cm. long, 
rather long and stoutly peduncled, rather closely flowered, the 
peduncle angled, the rachis striate, the flowers sessile, the 
lanceolate, attenuate, Dow; roughish bractlets more than 
