Wings half-moon-shaped, obtuse, small.
Keel two-petalled, half-moon-shaped, obtuse.
Chives. Threads in two sets (a single one like a bristle, and nine united), ascending. Tips nearly round.
Pointal. Seed-bud linear. Shaft awl-shaped, ascending, the length of the chives. Summit blunt.
Seed-vessel. A pod the length of the cup, flattened, ascending, and tapered to the point.
Seed, one, kidney-shaped.
SPECIFIC CHARACTER.
Psoralea foliis ternatis, minimis, confertissimis, recurvatis, in spinulam desinentibus.
Psoralea with three-leafletted leaves, very small, very crowded, bent back, and ending in a small spine.
REFERENCE TO THE PLATE.