Herbs or subshrubs. Stems terete to subquadrangular, glabrous. Leaves sessile or petiolate, narrowly elliptic to oblong, entire, undulate, or crenate, glabrous or sparsely pubescent with short, appressed trichomes, cystoliths present. Inflorescences terminal spikes to racemes, or well-branched terminal panicles with flowers in fascicles, glandular puberulent. Calyx 5-lobed, lobes narrowly triangular, glandular puberulent; corolla violet to lilac or white to pink with purplish spots, strongly 2-lipped, glandular puberulent without, tube short, broad and curved, upper lobes oblong-elliptic to oblong, lower lobes oblong to ovate or nearly orbicular, ciliate and often purplish-dotted; stamens 2, exserted, filaments curved, glabrous or pubescent, staminodes 2. Capsules clavate; seeds 4.
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