Perennial herbs (ours), with a characteristic minty smell. Leaves opposite. Inflorescences terminal and axillary, spike-like. Flowers small; bracts leaf-like, smaller than leaves; bracteoles linear. Calyx 10-nerved, ± equally 5-toothed. Corolla obscurely 2-lipped, 4-lobed. Stamens 4, ± equal, spreading, exserted. Nutlets ovoid. Worldwide: 25 species in the temperate Old World Burundi: 1 taxon. |
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| Species | Content | |
| aquatica L. |