Solanum seaforthianum, the Brazilian nightshade,[3] is a flowering evergreen vine of the family Solanaceae native to tropical South America.

It blooms in the mid to late summer with clusters of star-shaped purple inflorescence followed by scarlet marble-sized berries.

The plant contains modest amounts of various tropane alkaloids such as atropine, scopolamine and hyoscyamine and should be considered mildly toxic and inedible.

[4] Promising molluscicidal and schistosomicidal activities were displayed for the S. seaforthianum extracts and fractions which are attributed to the glycoalkaloid content.

[5] The species has become widely naturalised outside its native range and is an invasive species in Australia, Africa, Indochina, the Pacific Islands and India, choking native vegetation and poisoning livestock.