What is the meaning of Black-eyed_susan?

The flowering annual plant Rudbeckia hirta; the state flower of Maryland, United States.

Various other flowering plants:

  1. Certain other members of the genus Rudbeckia.
  2. Hibiscus trionum in the family Malvaceae.
  3. The black-eyed Susan vine, Thunbergia alata, in the family Acanthaceae.
  4. Some members of the Australian plant genus Tetratheca, particularly Tetratheca hirsuta, members of the family Elaeocarpaceae

Certain other members of the genus Rudbeckia.

Hibiscus trionum in the family Malvaceae.

The black-eyed Susan vine, Thunbergia alata, in the family Acanthaceae.

Some members of the Australian plant genus Tetratheca, particularly Tetratheca hirsuta, members of the family Elaeocarpaceae

A kind of boiled pudding with currants.

Source: wiktionary.org