宽叶大叶藻 kuan ye da ye zao

Rhizomes creeping, internodes 1-2 cm. Leaves on non-flowering shoots several, linear, ca. 1 m × 1-1.5 cm, 7-11-veined, apex truncate or obtuse; sheaths closed, tubular, membranous, splitting irregularly when old; auricle obtuse; ligule very short; intravaginal squamules 2, linear. Flowering stems ca. 1 m, branched; spathes with flattened stalk, narrower than leaves, apex retuse; spadix without projections. Anthers ca. 4 mm. Ovary 2-3 mm; style 1-1.5 mm; stigmas ca. 2.5 mm. Fruit narrowly ellipsoid, 5-6.5 mm. Seeds smooth. Fl. and fr. Jul-Mar. 2n = 12.

Bottoms of shallow seas. Rarely along coast of Liaoning [coasts of Japan, Korea, Russia (Far East)].