- Hydnellum nuttallii Banker

- Hydnellum spongiospies

- Hydnellum velutinum subsp. spongiosipes (Peck) Maas Geest., 1957

- Hydnellum velutinum var. spongiosipes (Peck) Maas Geest.

- Hydnellum velutinum var. spongiosipes B.Sutton

- Hydnum nuttallii (Banker) Sacc. & Trotter

- Hydnum spongiosipes Peck

- Hydnum velutinum var. spongiosipes (Peck) Anon.

- Hydnum velutinum var. spongiosipes B.Sutton