Alyssum purpureum
You searched for Alyssum purpureum this may mean;
Alyssum purpureum (A.Gray) Kuntze, Revis. Gen. Pl. 2: 931 (1891), nom. illeg. vide Physaria purpurea (A.Gray) O'Kane & Al-Shehbaz, Novon 12: 327 (2002)
or
Alyssum purpureum Lag. & Rodr., Anales Ci. Nat. 5: 275 (1802) vide Hormathophylla purpurea (Lag. & Rodr.) P.Küpfer, Fl. Iber. 4: 193 (1993)