Leonurus manshuricus Yabe; L. sibiricus var. grandiflora Bentham.

Herbs annual or biennial. Stems erect, 20-80 cm, appressed strigose. Lower stem leaves early deciduous. Petiole of mid stem leaves ca. 2 cm; leaf blade ovate, ca. 5 × 4 cm, sparsely strigose, abaxially glandular, base broadly cuneate, 3-palmatisect; lobes narrowly oblong-rhombic, 3-lobulate, lobules linear, 1-3 mm wide; veins yellowish white abaxially. Verticillasters many flowered, 3-3.5 cm in diam.; upper floral leaves subrhombic, 3-palmatisect; lobes narrow, with 3 linear lobules 1-2 mm wide; bracteoles spiny, reflexed, shorter than calyx tube, 4-6 mm, strigose. Flowers sessile. Calyx tubular-campanulate, 8-9 mm, densely pilose at middle otherwise appressed puberulent; anterior teeth slightly spreading, subulate-triangular, 3-4 mm, apex spinescent; posterior teeth triangular, 2-3 mm, apex spinescent. Corolla white or reddish to purple-red, ca. 1.8 cm; tube ca. 9 mm, glabrous, scaly annulate inside; limb densely villous, glabrous inside; upper lip oblong, straight, concave, ca. 10 × 5 mm, margin entire; lower lip ca. 7 × 5 mm, 3/4 as long as upper lip; middle lobe obcordate, base constricted, margin membranous, apex emarginate; lateral lobes ovate. Filaments sparsely scaly. Nutlets brown, oblong, triquetrous, ca. 2.5 mm, base cuneate, apex truncate. Fl. Jul-Sep, fr. Sep.

Stony or sandy grasslands, Pinus forests; 0-1500 m. Hebei, Nei Mongol, Shaanxi, Shanxi [Mongolia, Russia].