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Genus :


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Species of this Genus


Annual herbs, erect or creeping, glandular-pubescent or villous, frequently aromatic. Leaves opposite, occasionally verticillate, crenate-serrate. Flowers short pedicellate or sessile, in racemes, spikes or heads, sometimes solitary in axils of apical leaves, bracteoles 2. Calyx deeply 5-lobed, lobes imbricate, upper one usually large. Corolla tubular, limb 2-lipped, lower lip spreading, flat, 3-lobed, upper lip erect, emarginate or entire. Stamens 4, didynamous, included. Styles entire or 2-lobed, apex dilated. Capsules ovoid to ellipsoid, longitudinally 2-grooved, septicidally 4-valved, apex beaked. Seeds numerous, minute, seed coat reticulate.