Juncus micranthus
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Magnoliales
- family: Juncaceae
- genus: Juncus
- species: Juncus micranthus
Ponta Porã
Mato Grosso do Sul- Diamantina
Minas Gerais- Maringá
Paraná
Brazil
Pedro Juan Caballero
Amambay
Paraguay