subdividing the old genus Dolichos, we find ourselves com- 
pelled to assign to this plant a distinct station. From 
Dolichos, as now limited, it differs in having no bracteolæ 
to the calyx, which is also distinctly 2-lipped ; in the figure 
of the vexillum and carina; in the smoothness and filiform, 
not compressed, figure of the style; and, probably, also in 
the internal structure of the legumen,—but from want of 
ripe fruit we are not sufficiently certain of this point. From 
Vigna of Savi, it is distinguished by the linear-oblong, not 
rhomboid, form of the ale, a very important circumstance ; 
by the division of the upper lip of the calyx; by the 
flatness of its pods; and by the want of a beard on the 
stigma (qu. style?). From Lablab, by nearly all the 
-characters adverted toras distinctive of Dolichos. From 
‘the other genera, separated from Dolichos, its differences 
are sufficiently obvious, with the exception of Dioclea. To 
this it is much more closely -allied than to any other, 
differing chiefly in the absence of bracteole from the calyx, 
in the presence of two inflexed teeth near the base of the 
vexillum, which confine the filament of the tenth stamen, 
in the form of the base of the calyx, and, perhaps, also in 
the margin of thé legumen. ‘In habit itnearly resembles the 
Dolichos ruber of Jacquin, which is a spécies of Dioclea. 
_ Stem angular, hairy, twining. Leaves with 3 leaflets ; 
stipules half ovate, pubescent, bordered with rufous hairs ; 
stipella subulate, small; petiole downy; leaflets ovate, ob- 
tuse, emarginate, unequal, hairy on each side, the outer 
ones nearly sessile. Racemes axillary, shorter than the 
leaves, silky. Bracteæ ovate, deciduous. Bracteolæ none. 
Pedicels spreading, about as long as the flowers, clavate at 
the apex. Calyx campanulate, silky, pushed inwards at 
the base, 2-lipped, the upper lip being straight, ovate, 
2-toothed, the lower 3-parted, with acuminate, nearly 
equal, segments. Corolla dark-purple, with an oblong, re- 
volute vexillum, furrowed at the base, and having on each 
side, near the base, a tooth, which is bent inwards,. and 
enfolds the bottom of the filament of the tenth stamen. 
Ale and carina linear-oblong, longer than the vexillum. 
Stamina diadelphous, the tenth being quite free. Style 
filiform, smooth. Stigma very small, capitellate. Pod, 
when unripe, falcate, hirsute, with a long point, many- 
seeded, without any distinct margin. Seeds dark, spherical, 
with a pale lunate hilum. 
. The name has been formed from two Greek words, 
signifying “ a tooth on each side,” in allusion to the T 
liar processes of the base of the vexillum. . L. 
