solanum rostratum(n = noun.plant) buffalo bur - North American nightshade with prickly foliage and racemose yellow flowers;
is a kind of nightshade

genus solanum, solanum, solanum aviculare, solanum burbankii, solanum carolinense, solanum commersonii, solanum crispum, solanum dulcamara, solanum elaeagnifolium, solanum giganteum, solanum jamesii, solanum jasmoides, solanum macranthum, solanum melanocerasum, solanum melongena, solanum nigrum, solanum nigrum guineese, solanum pseudocapsicum, solanum quitoense, solanum tuberosum, solanum wendlandii, solanum wrightii