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

Shrub erect or scrambling, aromatic, 1-6 m high, square stems hairy, sometimes prickly.  Leaves simple, opposite, occasionally in whorls of three, ovate, margins crenate-serrate; inflorescence a capitate spike; flower tube 6-9 mm and limb 5-7 mm across, ranging from red, orange or yellow; fruit a drupe, ca. 4 mm diameter, ripens dark purple.