What is the meaning of Black_nightshade?

A Eurasian species of nightshade with black berries, Solanum nigrum, of Europe.

Other similar members of a group of closely-related species from the Solanum nigrum complex:

  1. Solanum americanum (American black nightshade) of much of North America
  2. Solanum ptychanthum (eastern black nightshade) of the Caribbean region.

Solanum americanum (American black nightshade) of much of North America

Solanum ptychanthum (eastern black nightshade) of the Caribbean region.

Source: wiktionary.org