WildBristol.uk - Discovering Wildlife in Bristol

Common and widespread throughout the UK. Habitat includes: Wet, swampy places e.g. ponds, lakes, streams / rivers, marshland, fens, dykes, ditches, canals, wet meadows, wet pasture, dune slacks, wet woodland etc. Flowers: July to September. Rhizomatous Perennial. Height: Up to 90 cm. No. of chromosomes: (Polyploid) 2n = 8x = 96. First described by Carl Linnaeus in 1753.