Japan Flora: Plants stout, 1-15 m. high, papillose hairy above; leaves rather many, broadly elliptic to narrowly oblong, 20-30 cm. long, 7-20 cm. wide, the upper ones narrowed, the lower surface more or less papil­lose hairy, especially on the nerves, longitudinally plaited; pani­cles 20-50 cm. long, the branches suberect to ascending, loosely flowered, the ultimate bracts ovate to oblong, acute to obtuse, 3-10 mm. long, the pedicels 卜8 mm. long; flowers 15-25 mm. across, greenish white, the tepals spreading, oblong, obtuse to rounded, denticulate, about twice as long as the stamens; capsules narrowly ovate-oblong, narrowed at both ends espe­cially above, 2-2.5 cm. long. June-Aug. Wet places and bogs in mountains.

Hokkaido, Honshu, Shikoku, Kyushu.