Japan Flora: Creeping stems long and loosely branched, with whorls of verticillate leaves, the ends or branches becoming aerial shoots, densely hirsute with long, soft, spreading, reddish brown, multicellular hairs; leaves chartaceous, in verticils of 3’s to 5’s, ovate to ovate- oblong, 2-6 cm. long, 1.5-3 cm. wide, acute at base, with a few coarse subacute dentate teeth on each side, long-hirsute on both sides, the lateral nerves rather prominent beneath, end­ing in teeth, the petioles 5-10 mm. long; inflorescence from the axils of scalelike leaves, 2-3 cm. long, slender, long-pilose and minutely granular-puberulent; flowers 2-4, the pedicels 7-12 mm. long; calyx-segments lanceolate, acuminate; corolla white, 6-7 mm. across; fruit globose, red, 5-6 mm. across. June-Aug. Woods.

Honshu (Izu Isis, and Awa Prov. westw.), Shikoku, Kyushu. s. Korea, Ryukyus, Formosa, China, and Philippines.

f. liukiuensis (Nakai) Ohwi. Leaves with many prominent teeth. Occurs in the warmer parts of our area.