Lathyrus vernus

Lathyrus vernus, the spring vetchling, spring pea, or spring vetch, is a species of flowering herbaceous perennial plant in the genus Lathyrus, native to forests of Europe and Siberia. It forms a dense clump of pointed leaves with purple flowers in spring, shading to a greenish-blue with age.

This species, and the cultivar 'Alboroseus', have gained the Royal Horticultural Society's Award of Garden Merit.