Stachys

Annual or perennial herbs; branches quadrangular, hairs simple. Leaves sessile or petiolate, opposite, margin serrate, crenulate or entire. Inflorescence of cymes in axils of distal leaves or bracts, spike-like. Calyx almost regular, 5-lobed, abaxial lobes narrower than adaxial ones, hairy, often glandular; corolla 2-lipped, abaxial lip broadly oblong-cuneate with 2 short lateral lobes and a broader emarginate central lobe, adaxial lip narrowly obovate and hooded; stamens 4, fertile, anthers 2-locular, with locules strongly divergent, enclosed in the hood of the adaxial lip of the corolla; ovary deeply 4-lobed, style gynobasic, stigma 2-fid. Mericarps rounded or keeled.