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.