Solanum eleagnifolium  Silverleaf Nightshade
ANNUAL.  Plants are erect, moderately stout, with a single prickly stem.  Long, narrow, grayish-green opposite leaves have brown prickles on the midvein. Showy purple flowers have five ruffled petals and bright yellow anthers.  Round yellow berries may dry out and remain on the dead stems throughout the winter. Blooms all summer beginning in May.  Roadsides, disturbed ground, dry sand.
FAMILY:  Solanaceae (Nightshade or Tomato Family)