Japan Flora: Branches slendcr, obsoletely striate, the nodes often slightly thickened; leaves cordate, cordate-orbicular, or deltoid-ovate, acute to acuminate, truncate or shallowly open-cordate at base, un- dulately short-toothed, glabrescent and deep green on upper side, reddish brown arachnoid, especially on nerves while young and with axillary tufts of hairs beneath, the upper leaves longer; panicles with or without tendrils, 4-6 cm. long, including the peduncles, 2-3 cm. across; fruit small, black when mature. May-June.

Honshu (Tokaido Distr. and westw.), Shikoku, Kyushu.

var. yokogurana (Makino) Ohwi. Arachnoid hairs sparse on leaves beneath, persistent at maturity.