Aristida megapotamica
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Poaceae
- genus: Aristida
- species: Aristida megapotamica
Passo Fundo
Rio Grande do SulCampos Novos
Curitibanos
Joaçaba
Lages
Mafra
Xanxerê
Santa CatarinaSorocaba
São Paulo
Brazil