131563 FLOWERING-RUSH Butomus umbellatus (Butomaceae) Height to 1m. Attractive perennial that grows in the vegetated margins of still or slow-flowing freshwater. FLOWERS are 25-30mm across and pink; borne in umbels (Jul-Aug). FRUITS are purple. LEAVES are rush-like, 3-angled and very long, arising from the base of the plant. STATUS-Locally common only in England and Wales.