Chaetacme

About

Chaetachme is a monotypic genus of flowering plants native to eastern and western Africa, including Madagascar, containing the single species Chaetachme aristata. Its English common name is thorny elm, and it is known as muyuyu in Kikuyu. Traditionally placed in the Elm family, it is more recently placed in the family Cannabaceae, thought to be possibly closely related to Celtis.

Summary from Wikipedia