HABIT	DENSELY BRISTLY-HAIRY ANNUAL OR PERENNIAL HERB OR SHRUB .
STEMS	1M HIGH, SMOOTH TO HISPID; TAPROOT WELLDEVELOPED. STEM AND TWIGS CLOTHED IN WHITE SCABROUS HAIRS.
LEAVES	BASAL LEAVES OPPOSITE, BECOMING ALTERNATE UP STEM; LAMINA LINEAR-OBLONG TO NARROW-OVATE, 3.5–10.5 CM LONG, 7–20 MM WIDE, APEX ACUTE, SURFACES HISPID.
FLOWERS	15–20 MM DIAMETER, BLUE, RARELY WHITE.
FRUITS	THE FRUIT IS ELLIPSOID, AND IS ENCLOSED BY THE CALYX. CALYX LOBES OVATE OR ROUNDED AT THE BASE.
SEEDS	NUTLETS 4; 4-5 MM LONG, OUTER SURFACE SMOOTH AND MOTTLED, INNER SURFACE WRINKLED, GREY, DOTTED, BROWN ON DORSAL SURFACE.