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Genus :


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Species of this Genus


Shrubs or undershrubs. Leaves simple, opposite or whorled, entire or lobed. Flowers sessile, in elongated, slender, dense spikes or in small heads, bracts often more or less 4-ranked. Calyx membranous, ovoid-campanulate, tube 2-ridged or winged, limb 2-4 lobed or 4-toothed. Corolla tube straight or curved, limb faintly 2-lipped, upper emarginated or slightly 2-lobed, lower 3-lobed. Stamens 4, included, anther cells parallel. Ovary 2-celled, with 1 ovule in each cell, stigmas oblique, subcapitate. Fruits dry, separating into 2-seeded pyrenes. Seeds exalbuminous.