Ross Hoddinott / Small pearl-bordered fritillary (Boloria selene) roosting on common sorrel (Rumex acetosa), Marsland mouth, Devon, UK. May .

Ross Hoddinott / Dock bug (Coreus marginatus) on Common sorrel (Rumex acetosa). Lower Tamar Lakes, Cornwall, England, UK. June.

Nick Upton / Common sorrel (Rumex acetosa) flowering in a meadow among masses of Dandelions (Taraxacum sp.), Wiltshire, UK, May.

Ross Hoddinott / Marsh fritillary butterfly (Euphydrayas aurinia) on sorrel (Rumex acetosa), Dunsdon, Devon, UK. June