bean Bell Bean biology botany Broad Bean cell Faba Bean Fava Bean Field Bean food magnification microscope plant Tic Bean Vicia faba allotment broad crop England english garden gardening Great Britain grow horticulture Leguminosae plants summer vegetable beans broad beans cultivation farm fence legumes pole stake young bell beans broad leathery pods cultivars faba beans fava beans field beans flattened fresh gray-green grey-green hardy healthy large legume long long pods oval pods protein raw tasty tic beans uncooked