Fruit morphology may vary on different individuals of the same species, depending on relative shape and size of the fertile locule and the 2 sterile locules.

1. Bracts of inflorescence at least partly ciliate; fruit bearing a corky mass of nearly equal size; corolla lobes pale blue.

V. locusta

1. Bracts completely lacking cilia; fruit without such a mass; corolla lobes white.

2. Fruit 2.7-4 (-4.2) mm long; stems glabrous (except sometimes at nodes) and leaves glabrous (except sometimes toward base).

V. chenopodiifolia

2. Fruit ca. 1.5-2 mm long; stems pubescent on angles and leaf margins ciliate (sometimes glabrate with age).

V. umbilicata