silverleaf nightshade
Solanum elaeagnifolium                                     

Identifying Characteristics:

Seed:  round or oboval in outline, flattened, glossy surface, tan, yellowish orange, or dark orange

Seedling:  tough hypocotyl, often purple-tinges, covered with coarse, short trichomes; small cotyledons, green above, lighter on lower surface, covered with trichomes

Mature Plant:  fibrous roots from taproot and creeping rhizomes; erect to spreading stem, woody with age, covered with coarse, thin, sharp prickles; silvery green, stellate trichomes; alternate leaves, simple, crowded, linear to oblong or oblong-lanceolate, silvery green beneath; racemelike clusters of inflorescences, star-shaped; corolla violet or bluish or rarely white,5 erect anthers, bright yellow; berry fruits, round, green with dark steaks from top, yellow to yellowish brown at maturity

Method of Propagation: seed

Life Cycle: perennial herb

References: 
Bryson, Charles T. & Michael S DeFelice. "Weeds of the South."