Abstract
During floristic investigation in several parts of Senegal, taxa of vascular plants were found which were not previously reported in the country. Collected samples were examined and morphological studies were conducted in the Dakar Herbarium of Cheikh Anta Diop University. This study provided a definition and description of the species from Croton genus of Euphorbiaceae family as a new species to Senegalese flora. Detailed studies showed that they were different from the known species of Croton reported in Senegalese flora. After morphological examination and literature review, the species was identified as Croton hirtus. The species is originally native to tropical and sub-tropical regions of the American continent but now, was widely spread in Africa and tropical Asia as an invasive species.
Keywords: Croton hirtus, new weed, Senegal