Stamina. Filamenta decem, coalita in cylindrum, superne longitudinaliter dehiscentem, apicibus assurgentia. Antheræ parvæ.
Pistillum. Germen subulatum. Stylus brevissimus, adscendens. Stigma obtusum, emarginatum.
Pericarpium. Legumen subrotundum, acuminatum, uniloculare, spina mucronatum.
Semina reniformia.
Empalement. Cup one leaf, cut into five segments, turban-shaped, shorter by half than the blossom; segments lance-shaped, pointed, nearly of the same length.
Blossom of five leaves, butterfly-shaped.
Standard bent back, blunt, the claw the length of the cup.
Wings half heart-shaped, a little shorter than the standard.
Keel of two leaves, half moon-shaped, and blunt.
Chives. Threads ten, joined in a cylinder, splitting at the upper side, turned up at the ends. Tips small.