HABIT	ANNUAL HERB.
STEMS	STOUT AND HAIRY, MUCH BRANCHED, UP TO 1.5 M TALL.
LEAVES	LEAVES BROADLY TRIANGULAR OVATE OR SUBORBICULAR, SCARBID OR HISPID ON BOTH SURFACES, APEX ACUTE, OFTEN 3-5 LOBED, IRREGULARLY SERRATE, BASE SOME WHAT CORDATE OR SHORTLY CUNEATE; PETIOLES 2.5-7.5 CM LONG.
FLOWERS	FLOWER HEADS MONOECIOUS, NUMEROUS, WHITE OR GREEN, IN TERMINAL AND AXILLARY RACEMES; MALE HEADS IN UPPER AXILS, GLOBOSE; FEMALE HEADS IN THE LOWER AXILS, OVOID, COVERED WITH HOOKED BRISTLES, ENDING IN 2 STRONG HOOKED BEAKS.
FRUITS	ACHENES 1.3 CM LONG, OBOVOID, COMPRESSED, ENCLOSED IN A HARDENED, SPINESCENT INVOLUCRE.