Place
- Branch1
- Calhoun1
- Cascade Glen.1
- Casnovia Twp., ca. 3.5 mi. NW of Casnovia.1
- Cass1
- Chassell Twp., T53N, R34W, sec. 35.1
- China Twp., probably mostly near the family farm in Sect. 8, along the Belle River.1
- Chippewa1
- Clam Lake Twp., ca. 4 mi. S. of Cadillac.1
- Clare1
- Cleon Twp., ca. 3.5 mi. SE of Copemish.1
- Clinton1
- Coe Twp., ca. 0.5 mi. S. of Shepherd.1
- Constantine Twp., ca. 5 mi. NW of Constantine.1
- Contact UM Herbarium1
- Corunna.1
- Cusion; Deer enclosure1
- Custer Twp., ca. 3 mi. E. of Scottsville.1
- Dickinson1
- Flint1