- Braulio Carillo National Park, Quebrada Conzales, Botarrama trail1
- British Columbia1
- Burden Research Plantation, Essen Lane1
- Camp Cienaga Alta Barrio Cubuy, Canóvanas.1
- Camp Sumatanga, Chandler Mountain1
- Canóvanas1
- Cape Breton Island, Cape Breton Highlands National Park, Mary Ann Falls1
- Cartago1
- Carteret1
- Cascade Glen Forest, near Ann Arbor1
- Cascade Lakes1
- Cedar Key quadrangle, section 61
- Chapel Hill1
- Charlevoix1
- Charlton1
- Chase S. Osborn Preserve of the University of Michigan, Sugar Island1
- Chippewa1
- Cinchoma1
- Cocos Island, Chatham Bay1
- Davis Falls1