| DIVERSITY OF LIFE | TOMPKINS COUNTY FLORA |
| Centaurea cyanus | Bachelor-Buttons, Bluebottle, Cornflower, Garden Cornflower |
| Centaurea diluta | North African Knapweed |
| Centaurea jacea | Brownray Knapweed |
| Centaurea maculosa | Spotted Knapweed |
| Centaurea moncktonii | |
| Centaurea montana | Mountain Bluet, Perennial Cornflower |
| Centaurea nigra | Lesser Knapweed, Spanish Buttons |
| Centaurea nigrescens | Tyrol Knapweed |
| Centaurea solstitialis | Yellow Star-thistle |
| Centaurea stoebe | Spotted Knapweed |
| Centaurea INDET |
