Potamogeton crispus
Content
Description
Flowers 5-8, with 4 carpels.
Fruits broadly ovate, 4-6 mm, adnate at base, obscurely toothed on the median ridge of the back, beak elongate, c. 2 mm.
Distribution
Africa present, Asia present, Asia-Tropical: Sumatera (Sumatera present), Australasia, Europe present, N America present, New Zealand present, southern S America present
Subcosmopolitan (N America, southern S America, Europe, Asia, Africa, Australia, New Zealand, probably only recently introduced in some areas); in Malesia: Sumatra, one record only, fide .