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Subshrubs with slender branches arising from usually short, sometimes stout, woody stems. Leaves entire or 1-3-serrulate. Verticillasters in dense capitula or spikes. Flowers pedicellate. Calyx tubular-campanulate to narrowly campanulate, 10-13-veined, 2-lipped, throat white hairy annulate; upper lip spreading or straight, 3-toothed, teeth triangular to lanceolate; lower lip 2-toothed, teeth subulate. Corolla tube included or exserted, 2-lipped; upper lip straight, emarginate; lower lip spreading, 3-lobed, lobes subequal or middle lobe longer. Stamens 4, separate; anterior 2 longer, exserted or included; anther cells 2, parallel or divaricate. Style apex 2-cleft; lobes subulate, equal or subequal. Nutlets ovoid or oblong, smooth.
Cal 10–13-nerved, 2-lipped, the tube densely villous in the throat, the lips about equaling the tube and each other, the lower lip bifid to the base, the upper much wider, 3-lobed to the middle with triangular upturned lobes; cor 2-lipped, the upper lip flat or nearly so, straight, broadly rounded, the lower lip spreading, slightly the longer, its 3 lobes subequal; stamens 4, straight, exsert, subequal; shrubs or half-shrubs with small lvs and small blue, purple, or white fls in axillary clusters often aggregated into a loose terminal spike-like infl. 50+, temp. Eurasia.
