What plant genus, Kigelia or Rumohra, occurs throughout tropical Africa?
Kigelia: Kigelia is a genus of flowering plants in the family Bignoniaceae. Kigelia:  The genus comprises only one species, Kigelia africana, which occurs throughout tropical Africa from Eritrea and Chad south to northern South Africa, and west to Senegal and Namibia. Rumohra: Rumohra is a genus of ferns in the family Dryopteridaceae.
Kigelia