Bog bean flowers, Menyanthes trifoliata.

Bog bean flowers, Menyanthes trifoliata. Surrey, UK. I'd been looking for this plant on a NNR nearby but none were in flower. I spotted a wash of them in a village pond as I drove past, so turned round and got shooting. Lovely flowers, always worth some frames. Canon EOS1DII, Tamron 180, f11, 1/30th, tripod, MLU, cable. RSP conversion, dusted etc. PSE3.