HABIT	ANNUAL HERB, USUALLY ERECT; UP TO 5 M TALL.
STEMS	STEMS VARIABLE, WITH RESINOUS PUBESCENCE, ANGULAR, SOMETIMES HOLLOW.
LEAVES	BASAL LEAVES OPPOSITE, THE UPPER LEAVES ALTERNATE, STIPULATE, LONG PETIOLATE, PALMATE, WITH 3-11, RARELY SINGLE, LANCEOLATE, SERRATE, ACUMINATE LEAFLETS UP TO 10 CM LONG, 1.5 CM BROAD.
FLOWERS	FLOWERS MONOECIOUS OR DIOECIOUS, THE MALE IN AXILLARY AND TERMINAL PANICLES, APETALOUS; FEMALE FLOWERS IN THE AXILS AND TERMINALLY WITH 5 YELLOWISH PETALS.
FRUITS	A BROWN, SHINING ACHENE, VARIOUSLY MARKED OR PLAIN.