Home
Annual or perennial herbs or small shrubs, erect, decumbent or ascending, pubescent, hispid, glandular-viscid or more rarely glabrous, frequently becoming black on drying.
Flowers solitary-axillary or in terminally racemose or simple, cymose or spicate inflorescences, pedicellate, bracteolate or not.
Leaves usually opposite or nearly so, dentate, crenate, lobed or incised, rarely entire, petiolate or sessile.
Calyx 5-partite or 5-lobed; lobes linear, oblong, lanceolate or rarely ovate.
Bracts usually similar to leaves but smaller, free from pedicels.
Style filiform, included or exserted, somewhat clavate above.
Stamens 4, didynamous, exserted or wholly or partly included.
Anthers perfect, reniform, unithecal by confluence of cells.
Filaments filiform, inserted in corolla tube.
Capsule septicidal, valves bifid.
Seeds numerous, small, rugose.
Ovary bilocular.
Stigma obtuse.
