trifolium dubium, the lesser trefoil, suckling clover or little hop clover or lesser hop trefoil.

background beautiful bloom blooming blossom botanical botany closeup clover cranesbill dubium field flora floral flower forest fresh garden geraniaceae geranium grass green hop inflorescence legume lesser macro meadow natural nature outdoor petal plant purple spring suckling summer sylvaticum trefoil trifolium wild wildflower wood yellow