Buffalobur

buffalobur nightshade Solanum rostratum
Buffel grass Pennisetum ciliare var. ciliare
buffel grass Pennisetum ciliare
bulbous bluegrass Poa bulbosa
bulbous buttercup Ranunculus bulbosus
bull thistle Cirsium vulgare ...

These include buffalobur (Solanum cornutum), the ornamental Jerusalem cherry (Solanum pseudocapsicum), and the common white potato (Solanum tuberosum).

See also: Field Bindweed, May, Medic, Smokebush, Citrus