Pal Hermansen / Meadow vetchling (Lathyrus pratensis) and brambles (Rubus) growing on the dashboard of the abandoned car in 'car graveyard' Bastnas, Sweden, July

Matthew Maran / Calcareaous grassland including Southern marsh-orchid (Dactylorhiza praetermissa) Grass vetchling (Lathyrus nissolia) Cowslip (Primula veris) Creeping buttercup (Ranunculus repens) East Devon, Englan...

Rod Williams / Brimstone butterfly (Gonepteryx rhamni) male feeding on Everlasting sweet pea (Lathyrus latifolius) Brockley Cemetery, Lewisham, London, England, UK. July.

Rod Williams / Brimstone (Gonepteryx rhamni) male feeding on Everlasting sweet pea (Lathyrus latifolius) Brockley Cemetery, Lewisham, London, England, UK. July.

Nick Upton / Tangier pea (Lathyrus tingitanus), a native species, flowering in one of the island's few surviving patches of laurel forest, Los Tilos de Moya, Doramas Rural Park, Gran Canaria UNESCO Biosphere Reser...

Nick Upton / Tangier pea (Lathyrus tingitanus), a native species, flowering in one of the island's few surviving patches of laurel forest, Los Tilos de Moya, Doramas Rural Park, Gran Canaria UNESCO Biosphere Reser...

Nick Upton / Grass vetchling (Lathryrus nissolia) flowering in a coastal grassland meadow, RSPB Dungeness Nature Reserve, Kent, UK, May.

Nick Upton / Grass vetchling (Lathryrus nissolia) flowering in a coastal grassland meadow, RSPB Dungeness Nature Reserve, Kent, UK, May.

Nick Upton / Grass vetchling (Lathryrus nissolia) flowering in a coastal grassland meadow, RSPB Dungeness Nature Reserve, Kent, UK, May.

Ernie Janes / Clematis 'Fujimusume' and Everlasting peas (Lathyrus latifolius) in garden, Norfolk, England, UK, July.

Will Watson / Grass-leaved vetchling (Lathyrus nissolia), Worcestershire, England, UK, June.

Will Watson / Grass-leaved vetchling (Lathyrus nissolia), flowering amongst Rough Meadow-grass (Poa trivialis), Worcestershire, England, UK, June.