Northeastern Asian Flora - Ruppia maritima

Ruppia maritima L. (redirected from: Ruppia maritima var. pacifica H.St.John & Fosberg)
Family: Ruppiaceae [Ruppia maritima subsp. rostellata (W.D.J.Koch ex Rchb.) Asch. & Graebn., more] Images not available	Japan Flora Resources Japan Flora: Delicate aquatic herb; stems much branched, elongate; leaves filiform, slighdy compressed in cross section, 0.3-0.5 mm. wide, 5-10 cm. long, acuminate, remotely serrulate toward the tip; sheath 8-15 mm. long, with a rounded mouth; nutlets 2-4, obliquely ovate, biconvex, about 2.5 mm. long, short-beaked, on a slightly curved peduncle 1.5-4 cm. long. June-Oct. Ponds and shallow rivers; Honshu (Kanto Distr. and westw.), Shikoku, Kyushu. Eurasia, Africa, and N. America.
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