Lathyrus tremolsianus - Valencian Pea
Valenciano: Pesolera de Paqstor
Spanish: Guisante valenciano
This looks like L tremolsianus as described in "Plantas Sylvestris".
There are many species of Lathyrus, bu this is the only one with a red/ purplish
centre and almost violet wings. The flowers are large 2-3cm. Flowers April to
June.