- Cedar1
- Chariton3
- Christian4
- Clarence Canon National Wildlife Refuge, just east of Annada, Annada 7.5' Quad.1
- Clifton City, near railroad tracks.1
- Contact UM Herbarium28
- Cooper3
- Cordgrass Bottoms Natural Area, along highway 139.1
- Creve Coeur Lake.1
- Crowleys Ridge, Woods.1
- Cupola Pond Natural Area, Mark Twain National Forest.1
- Dade2
- Daviess2
- DeKalb1
- Deerfield Township, section 5 along Highway 54.1
- Dent3
- Diamond Grove Prairie, ca 4 mi WNW of Diamond, Joplin East 7.5' Quad.1
- Diamond Grove Prairie, ca. 3.1 mi. WNW of Diamond. Fidelity 7.5' Quad. In main draw that runs in a southeasterly direction in the southern half of the prairie.1
- Douglas2
- Dunklin6