three-ranked spear moss
- kingdom: Plantae
- phylum: Bryophyta
- class: Bryopsida
- order: Hypnales
- family: Amblystegiaceae
- genus: Pseudocalliergon
- species: Pseudocalliergon trifarium
- Narsaq
Kujalleq
Greenland- Wanneperveen
Overijssel
Netherlands- Cheboygan
Michigan- White Haven
Pennsylvania
United States