Vallisneria spiralis
Vallisneria spiralis
Kordelaotu
Leaves basal, to at least 70 cm, to 9 mm broad, ribbon-like, rounded or obtusish at apex, minutely dentate towards apex. Sepals of female flowers pinkish-white, 1.7-5.4 mm. Fl. 7. Eutrophic lakes, in water up to 1 m deep, s.l.-40 m.
C. Europe, Mediterranean area, Egypt, W. Pakistan, Afghanistan, N. Iraq, Syrian Desert, N. &C. Iran.