HABIT	A SMALL AQUATIC FERN.
STEMS	SLENDER, CREEPING RHIZOME.
LEAVES	QUADRIFOLIATE WITH LONG SLENDER PETIOLES; LEAFLETS OBOVATE-RETUSE, GLABROUS, ARRANGED IN A WHORL.
FLOWERS	ABSENT.
FRUITS	FRUCTIFICATIONS (SPOROCARPS) ARE DARK BROWN, HARD, BEAN SHAPED, WITH TWO UNEQUAL HORNS.