Xyris regnellii
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Xyridaceae
- genus: Xyris
- species: Xyris regnellii
São José dos Pinhais
Paraná- Joaçaba
Santa Catarina
Brazil
Xyris regnellii São José dos Pinhais Joaçaba