Perennial shrub or subshrub of up to 2 m, obtuse 4-angular stem. Leaves ovate to lanceolate, margins crenate, glabrous on the upper side, pubescent on the underside on the nerves, glandular on both sides. Verticillate inflorescence, 18 cm clusters, densely pubescent peduncle; campanulate calyx; tubular corolla 5 to 7 mm, white and purple. 2 mm foveolate subglobose nutlet.
Annual or perennial of 50 cm in height, occasionally with leaning branches. Elongated, ovate or punctate leaves from 3 to 7 cm long. Flowers in spikes of 1.5 to 3 cm in length emerging from the axils of the leaves. Pilose 2 mm capsules.
Herbaceous annual, erect, up to 60 cm; the new parts pubescent. Leaves elliptical, ovate or oblong from 2 to 4 cm, acute at the apex, tapered at the base, serrate or entire, glabrous. Verticillate inflorescence up to 20 cm; very short, recurved pedicels; calyx long-ciliate, 5 mm; white corolla, 4 to 5 mm; upper filaments with a dentiform appendage at the base.
Tree of up to 30 m; smooth outer bark with prominent linear scars. Single leaves arranged in a spiral, heart-shaped to
slightly three-lobed, 20 to 30 cm long, with a sharp apex and a cordate base; glabrous on the upper side, stellate-tomentose on
the underside. Single flowers, axillary, up to 20 cm, red to cherry calyx; 5 white or cream petals with reddish edges; stamens in a column. Capsule of 12 to 20 cm, with prominent longitudinal ribs; seeds covered with woolly fibres.
Robust herbaceous from 1 to 3 m, annual or biannual; sticky-puberulous. Leaves ovate to elliptic or lanceolate, 30 cm or more, the lower ones sessile, decurrent and amplexicaul. Panicles with several branches; tubular calyx with lobes shorter than the tube; tubular corolla with the limb flattened, pink, red or white, two to three times the length of the calyx. Subglobose capsule that opens into two longitudinal valves with numerous seeds.
Robust herb or shrub of up to 4 m in height. Single, alternate, entire or three-lobed leaves, ovate to oblong-lanceolate, with a serrate edge, 5 to 24 cm long. Panicles up to 10 cm in diameter; yellow capitula, 6 mm in diameter; oblong involucral bracts, in four series. Achenes of 2 mm.
