The flowers of Caley Pea are at first sight similar to Angled Pea (Lathyrus angulatus). It does however have 1–2 flowers, pink, blue or bicolored, on a winged stem which does not extend beyond the flower. Leaves have 2 narrow leaflets, 3–6 cm long. Fruits have hairs with bulbous bases. Often cultivated, uncommon in the wild.