| Scientific Name | Common Name | Local Rank |
|---|---|---|
| Cephalanthus occidentalis | button bush | A2 |
| Galium andrewsii subsp. gatense | phlox-leaf serpentine bedstraw, serpentine bedstraw | *A2 |
| Galium porrigens var. tenue | climbing bedstraw | A1 |
| Galium trifidum subsp. columbianum | trifid bedstraw | A1 |
| Galium triflorum | sweet-scented bedstraw | C |