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Usually perennial, rarely annual, aromatic herbs, not rhizomatous. Lvs simple, dentate to deeply and jaggedly toothed. Verticels in lax or dense spike-like infls, usually bracteate. Fls ☿ or unisexual. Calyx cylindric to ± campanulate, straight or curved, not gibbous at base, 15-nerved, 5-toothed. Corolla funnelform or cylindric-campanulate; tube slender, straight or curved, sometimes much exserted, glabrous inside; limb 2-lipped; upper lip short, ± straight, 2-lobed; lower lip spreading, 3-lobed. Stamens ± exserted, parallel, with the 2 outer posterior stamens longer; anther cells divergent. Style gynobasic, its branches equal. Nutlets smooth or variously rugose, oblong to subglobose.
Cal 15-nerved, curved, oblique at the mouth, 5-toothed; cor bilabiate, the upper lip somewhat concave and often subgaleate, entire or bifid, the lower lip spreading, 3-lobed, the large central lobe sometimes notched; stamens 4, ascending under the upper lip and scarcely exserted, the upper pair slightly the longer; pollen-sacs widely divaricate, confluent in dehiscence; herbs, mostly erect, with toothed or cleft lvs and numerous small, white to blue fls in terminal, compound, often spike-like infls. 150, Eurasia.
