Ross Hoddinott / Marbled white butterfly (Melanargia galathea) perched on bird's foot trefoil, Volehouse Moor, Devon, UK. July.

Wild Wonders of Europe / Maitland / Spotted fritillary butterfly (Melitaea didyma) on Trefoil (Lotus sp) flowers, Mount Baba, Galicica National Park, Macedonia, June 2009

Wild Wonders of Europe / Hermansen / Bird's foot trefoil (Lotus corniculatus) flower, Burren National Park, County Clare, Republic of Ireland, June 2009

Wild Wonders of Europe / Maitland / Female Common blue butterfly (Polyommatus icarus) on Trefoil (Lotus sp) Lake Macro Prespa, Stenje region, Galicica National Park, Macedonia, June 2009

Wild Wonders of Europe / López / Leaves of various plants: Lily-of-the-valley, (Convallaria majalis) (top left corner)Wood-sorrel (Oxalis acetosella) with trefoil leaves and Woodruff (Galium odoratum) with leaves in whorls, growing a...

Wild Wonders of Europe / Schandy / Alibek glacier in Alibek vally with Purple trefoil (Trifolium) growing in the foreground, near Dombay, Caucasus, Russia, July 2008

Nick Garbutt / Broad-leaf marsh orchid (Dactylorhiza majalis) amongst Bird's-foot trefoil (Lotus sp). North Tyrol, Austria, June.

Ernie Janes / Discarded drinks can in clump of Birds foot Trefoil (Lotus corniculatus) on Holkham dunes, Norfolk

Ross Hoddinott / Marbled White butterfly (Melanargia galathea) resting on bird's-foot-trefoil (Lotus corniculatus), Dunsdon Nature Reserve, Devon, UK. July.

Mike Read / Mountain kidney-vetch (Anthyllis montana) and Bird's-foot trefoil (Lotus sp) in alpine meadow. Plateau de Beurre, Vercors Regional Natural Park, France. June.

Mike Read / Mountain clover (Trifolium montanum) and Bird's-foot trefoil (Lotus sp). Alpine meadow, Plateau de Beurre, Vercors Regional Natural Park, France. June.

Rod Williams / Chalkhill blue butterfly (Polyommatus coridon) feeding on Bird's-foot trefoil Hutchinson's Bank, New Addington, London, England, UK. August.