|Sparganium fallax is a
perennial herb growing in colonies in ponds, wetlands, etc., where
the water is stagnant, 50-120cm in height, spreading runners in mud
sideways to set up new vegetative growths. Leaves are in an alternate
arrangement in a distichous way, each linear, 4-10cm in width, of triangular
cross-section; there are ridges on backsides. Inflorescences are
erect with no branching and set spherical flower heads in them.
Bloom time: June-September.