HABIT	AN ANNUAL HERB.
STEMS	UP TO 60 CM TALL; ERECT OR DECUMBENT AT BASE, MORE OR LESS HAIRY.
LEAVES	OPPOSITE, TRIANGULAR OVATE OR LANCEOLATE, MARGINS DENTATE OR ALMOST ENTIRE, SPARSELY PUBESCENT BENEATH.
FLOWERS	FLOWER HEADS OVOID, PALE YELLOW OR WHITE, LONG-PEDUNCLED, SOLITARY OR IN TERMINAL PANICLES.
FRUITS	ACHENES OBOVATE TO TRIGONOUS WITH CILIATE EDGES.