Japan Flora: Stems 5-15 cm. long, long-pubescent; stolons elongate, leafy; leaves opposite, flabel- late-suborbicular, 4-10 mm. long, 5-12 mm. wide, often slightly variegated on the upper surface, obsoletely 5- to 9- toothed, subtruncate and abruptly decurrent to a petiole; flowers rather few, dense, white in anthesis, pale green in fruit; calyx-lobes erect, 3-5 mm. long, broadly lanceolate to narrowly oblong; stamens erect, the anthers dark purple.  Mar.-May. Woods in foothills.

Honshu (Iwaki Prov. and southw.), Shikoku, Kyushu.

var. stamineum (Fr. & Sav.) Hara. A smaller plant with leaves usually 5-toothed. Western part of the distribution.

var. flavum Hara. Flow­ers yellow; sepals ovate, obtuse to shortly acute; anthers yel­lowish, often tinged with red. Honshu (Tokaido Distr.); 

rare.