Ohwi 1985 Flora of Japan

Tree, the branches with pale brown crisped ap- pressed hairs; leaves simple, ovate-cordate, 10-17 cm. long, 6-12 cm. wide, abruptly caudate-acuminate with an obtuse tip, deeply cordate at base, glabrous on upper side, rusty-pubescent beneath while young, appressed and obtusely toothed, the petioles 3-5 cm. long, appressed-pubescent while young; inflorescence pendulous, racemose, with short branches on lower part, 7- 10 cm. long inclusive of the peduncles 3-5 cm. long, pale brown appressed-pubescent, the pedicels to I cm. long; flowers yellowish, 3-4 mm. across; sepals oblong, appressed-pubescent externally; petals as long as the sepals, oblanceolate; stamens longer than the sepals; samaras nearly erect to ascending, pale brown-villous while young, about 3 cm. long.

June.

Mountains; Honshu (Kinki Distr. and eastw.), Kyushu.