NARROWLEAF VETCH, Vicia angustifolia L. 1, plant; 2, seed pods; 3, seed. Annual, reproducing by seed. Stems smooth, 1 to 3 feet (30 to 90 cm) long, upright but weak, clinging to support by means of tendrils at tips of leaves. Leaves pinnately compound with 8 to 12 leaflets. Leaflets on lower leaves oblong, on upper leaves linear, all with smooth margins. Flowers purple, in racemes containing 2 to 9 flowers. Pods smooth, 1 to 1-1/2 inches (2.5 to 3.8 cm) long, with 4 to 7 seeds. Seeds spherical, brown-black or olive brown, mottled with fine black spots. Found in fields and waste places. Has forage value but is objectionable in wheat fields because the vetch seed contaminates the threshed grain.