Dave Bevan / Moorhen (Gallinula chloropus) feeding chick in a pond covered with Water smartweed (Persicaria amphibia), Ceredigion, Wales, UK. July.

Dave Bevan / Pair of Moorhens (Gallinula chloropus) feeding chicks in a pond covered with Water smartweed (Persicaria amphibia), Ceredigion, Wales, UK. July.

Dave Bevan / Little grebe (Tachybaptus ruficollis) preening, surrounded by Water smartweed (Persicaria amphibia), Ceredigion, Wales, UK. July.

Paul Harcourt Davies / Bistort flowers (Persicaria bistortum), Piano Grande, Sibillini, Umbria, Italy. June 2016

Paul Harcourt Davies / Bistort (Persicaria bistortum) flower with hoverfly, Piano Grande, Sibillini, Umbria. June.

Nick Upton / Vinegrera / Canary island sorrel (Rumex lunaria), endemic to the Canaries, flowering in mountain valley. Gran Canaria UNESCO Biosphere Reserve, Gran Canaria, Canary Islands. June.

Philippe Clement / Buckwheat (Fagopyrum esculentum) in flower in summer, Belgium, July

MYN / Dirk Funhoff / Sheep's sorrel (Rumex acetosella), Lorsch, Hessen, Germany. June. Meetyourneighbours.net project

MYN / Dirk Funhoff / Common sorrel (Rumex acetosa), Büchelberg, Pfalz, Germany. May. Meetyourneighbours.net project

MYN / Dirk Funhoff / French sorrel (Rumex scutatus), Theisbergstegen, Pfalz, Germany. June. Meetyourneighbours.net project

MYN / Dirk Funhoff / French sorrel (Rumex scutatus), Theisbergstegen, Pfalz, Germany. June. Meetyourneighbours.net project

MYN / Dirk Funhoff / Common sorrel (Rumex acetosa), Lorsch, Hessen, Germany. June. Meetyourneighbours.net project