Japan Flora: Perennial stolon iferous herb densely spreading-pilose; stems 20-30 cm. long, erect, sometimes branched; leaves ovate or broadly so, 2.5-4 cm. long, 1.5-2.5 cm. wide, subacute, broadly cuneate to shallowly cordate at base, toothed, the petioles 1-2 cm. long; spikes 4-8 cm. long, one-sided, rather loosely flowered, the bracts rather shorter than the calyx, broadly lanceolate, 1-toothed; flowers about 8 mm. long, pedicellate; calyx descending in fruit, often brownish and lustrous, 3-3.5 mm. long, with loose long glan­dular hairs on upper part, the upper 3 teeth deltoid, obtuse, the lower 2 narrowly deltoid, very acute; corolla glabrous, the lobes rather narrow; nutlets orbicular, about 1.5 mm. in di­ameter, with obsolete reticulations.  Aug. Woods in moun­tains;

Hokkaido, Honshu; rather rare. Korea.

var. brachytrichum Ohwi. Plant with short spreading hairs and the leaves coarsely toothed. Hon­shu (Uzen Prov.).