Annual, erect or decumbent herb up to 2 m tall with glandular hairs with characteristic strong odour.  Leaves petiolate, spirally arranged, pinnate, leaflets ovate, ovate-lanceolate, margins serrate-dentate, tip acute.  Inflorescence cymose; flowers actinomorphic, calyx deeply divided, segments lanceolate, pilose-glandulose, corolla yellow, 10 to 16 mm wide; fruit a globose berry, red when ripe, 1-15 cm in diameter.

Slender shrub, up to 2 m in height, aromatic, branches short-pilose.  Leaves oblong to elliptic, or ovate to ovate-oblong, 2-4 cm in length, generally obtuse or round at the tip, round or subcordate at the base, densely pilose at the sheaf, densely tomentose and glandular on the underside; margins finely crenate.  Flowers in subglobose to oblong spikes, 4-12 mm in length; corolla white.

Aromatic shrub, 1 to 2 m in height, branches long, slender and flexible like willow stems (osier-like), decumbent, lower basal branches can become long rooting suckers, densely puberulent or strigose.  Leaves opposite or ternate, briefly petiolate, 2-6 (rarely 9) cm long and 1.2-4.5 cm wide, oblong, corrugate, crenate, covered with short small hairs (pubescent) and prominent veins.  Inflorescences in globose axillary heads, cylindrical upon fructification.  Bracts ovate, acuminate, the inferior ones mucronate.  Flowers zygomorphic; calyx 1.5-1.7 mm in length and accrescent when ripe; corol