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Chaiturus Ehrh. ex Willd.


Description from Flora of China

Herbs annual or biennial, gray green. Stems erect, branched. Leaf blade circular to lanceolate, margin dentate or subentire. Verticillasters sessile, globose, many flowered; bracteoles spiny. Calyx tubular, 10-veined; veins obscure in flower, ± distinct in fruit; teeth 5, equal, straight, apex spinescent. Corolla purple-white or white, nearly included, glabrous inside, equally 2-lipped; upper lip straight, ovate; lower lip 3-lobed. Stamens 4, subequal, nearly included; anthers ovoid, cells 2, divaricate. Style apex unequally 2-cleft. Nutlets oblong, triquetrous.

Monotypic: China, Kazakhstan, Russia; Europe.

Often included in Leonurus.


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