HABIT	AN ERECT, CAMPHOR-SCENTED, VARIABLE HERB OR WOODY SHRUB, UP TO 2 M TALL.
STEMS	QUADRANGULAR AND SOFTY PUBESCENT.
LEAVES	THICK, BROADLY OVATE, 4-10 CM LONG AND 2-6 CM WIDE, BASE ROUNDED OR SUBCORDATE, APEX ACUTE, MARGINS CRENATE-SERRATE, HAIRY TO SOFTY PUBESCENT ON BOTH SIDES; PETIOLES 1-7.5 CM LONG.
FLOWERS	FLOWERS BORNE IN DENSE WHORLS IN LEAF AXILS BELOW AND IN DENSE, SPIKED INFLORESCENCES, 8-32 CM LONG ABOVE; LIGHT PURPLE OR DARK RED WITH A DEEP BLUE LOWER LIP.
FRUITS	NUTLETS 2.5 MM LONG, BROADLY OVOID WITH ROUNDED ENDS, SMOOTH, POLISHED, TURNING BLACK WHEN RIPE.