Riccia austinii
- kingdom: Plantae
- phylum: Marchantiophyta
- class: Marchantiopsida
- order: Marchantiales
- family: Ricciaceae
- genus: Riccia
- species: Riccia austinii
- Saint Francisville
- Winnfield
Louisiana- Alpine
- Closter
- Demarest
- Harrington Park
- Norwood
New Jersey
United States