Northeastern Asian Flora - Hydrocharis dubia

Hydrocharis dubia (Blume) Backer (redirected from: Hydrocharis morsus-ranae var. asiatica (Miq.) Makino)
Family: Hydrocharitaceae [Boottia renifolia Merr., more] Images not available	Japan Flora Resources Japan Flora: Aquatic perennial; stems branched, leafy at the nodes; leaves rounded- cordate, 4-8 cm. long and as wide, long-petiolate, rounded at apex; flowers raised above the water; sepals narrowly oblong, green; petals rounded-cuneate, thinly membranous, white, yellow at base, 12-15 mm. long and as wide; stamens 6-9, yellow, with short-pilose filaments, the anthers introrse; stigmas 6, yellow, deeply bifid; fruit globose. Aug.-Oct. Ponds. Honshu, Shikoku, Kyushu; common. se. Asia and Australia.
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