Underwood's spikemoss
- kingdom: Plantae
- phylum: Tracheophyta
- class: Lycopodiopsida
- order: Selaginellales
- family: Selaginellaceae
- genus: Selaginella
- species: Selaginella underwoodii
Applewood- Lyons
- Manitou Springs
Colorado- Las Vegas
New Mexico- Fort Bliss
Texas
United States