Hippurus vulgaris Mare's-tail C DD N
This plant does actually have flowers but they are very small and hard to find in a plant which always grows in water - often deeper than my wellies. H. vulgaris is distibuted all over the British Isles but there tend to be fewer sites in the west, Wales and Cornwall in particular.
Southport "River Nile", 23rd July 2005
Added on Novemeber 1st 2005, updated 9th April 2009, updated 7th April 2010