Common Names: Garden Vetch, and Narrow-leaved Vetch

Non-native

H&C gives 2 varieties:
var. sativa: flowers > 18 mm, wings usually red
var. augustifolia: flowers < 18mm, wings seldom red

USDA gives 2 subspecies found in NA
ssp. sativa:
ssp. nigra: Narrow-leaved Vetch (= ssp./var. angustifolia)

Note red wing color.