Parablechnum ambiguum
- kingdom: Plantae
- phylum: Tracheophyta
- class: Polypodiopsida
- order: Polypodiales
- family: Blechnaceae
- genus: Parablechnum
- species: Parablechnum ambiguum
Hazelbrook- Lawson
New South Wales
Australia
Rio Pardo
Rio Grande do Sul
Brazil