Japan Flora: Perennial; stems 20-40 cm. long, scattered-pubescent; leaves ovate to narrowly so, oblong,2-5 cm. long, 1-2.5 cm. wide, acute at both ends, acutely toothed, glandular-dotted on both sides, the petioles 3-10 mm. long; verticils many flowered; cymes sessile or rarely short-pedunculate, the pedicels slightly shorter than the calyx, glabrous or puberulous; calyx 2.5-3 mm. long, the teeth spreading-ciliate, narrowly deltoid, long-acuminate; corolla white or pale rose, 4-5 nun. long, the tube as long as the calyx; nutlets elliptic, slightly compressed, 0.7 mm. long, very broadly cuneate and 3-angled at base. Aug.-Oct.

Hokkaido, Hon­shu, Shikoku, Kyushu. Korea, Sakhalin, and e. Asia. occurs in temperate regions of the N. Hemi­sphere.