兴安益母草 xing an yi mu cao

Herbs biennial or perennial. Stems erect, ca. 60 cm, appressed pubescent. Petiole 1.7-2 cm; blade of mid and upper leaves subcircular, ca. 4.5 cm in diam., palmately 5-partite, short strigose, base broadly cuneate; lobes rhombic, pinnately divided. Verticillasters numerous, in interrupted spikes; floral leaves with petiole ca. 2 cm, blade rhombic, 2.5-3 cm, 3-partite, base cuneate, lobes entire or linear incised; bracteoles spiny, slightly reflexed, appressed pubescent, villous, 3-4 mm. Calyx obconical, appressed pubescent, tube ca. 3 mm; veins conspicuous, villous; teeth 2-3 mm, broadly triangular, long spinescent, anterior teeth spreading. Corolla purplish, ca. 8 mm, villous; tube ca. 4 mm, pilose annulate inside; upper lip straight, oblong; lower lip horizontally spreading, middle lobe larger. Nutlets brownish, triquetrous, oblong, ca. 1.5 × 1 mm, adaxially ribbed, apex truncate, puberulent. Fl. Jul, fr. Aug.

Forested slopes; 800-900 m. Nei Mongol [Mongolia, Russia].

This species was treated in FRPS as Leonurus tataricus Linnaeus.