kingdom: Plantae >
subkingdom: Pteridobiotina Britton & Brown >
phylum: Tracheophyta >
class: Magnoliopsida >
order: Fabales Bromhead >
family: Fabaceae >
genus: Crotalaria L. >
Belize , Bolivia , Brazil North , Brazil Northeast , Brazil Southeast , Brazil West-Central , Colombia , Costa Rica , Ecuador , Guatemala , Guyana , Honduras , Mexico Central , Mexico Gulf , Mexico Southeast , Mexico Southwest , Paraguay , Peru , Venezuela