Abstract
Senna is the second largest genus in the subfamily Caesalpinioideae with 300 species, of which 80 occur in Brazil. The taxonomy of the Brazilian species of Senna is poor studied, particularly in the Midwest of country. This study aimed to the taxonomic survey of the species of Senna occurring in the National Forest Silvânia, Goiás. We found nine species which corresponds to 10% of the species occurring in Brazil and 37% present in the State of Goiás. We provided identification key, descriptions, comments about geographical distribution, morphological similarities and, phenology, as well as images to eight species.
Key words:
Cassiinae; diversity; floristic; taxonomy
