| DIVERSITY OF LIFE | TOMPKINS COUNTY FLORA |
| Crataegus beata | Dunbar's Hawthorn |
| Crataegus brainerdii | Brainerd's Hawthorn |
| Crataegus calpodendron | Blackthorn, Pear Hawthorn |
| Crataegus chrysocarpa | Fireberry Hawthorn |
| Crataegus coccinea | |
| Crataegus compta | Adorned Hawthorn |
| Crataegus crus-galli | Cockspur, Cockspur Hawthorn, Thornless Cockspur Hawthorn |
| Crataegus deltoides | |
| Crataegus dodgei | Dodge's Hawthorn |
| Crataegus flabellata | Fanleaf Hawthorn |
| Crataegus holmesiana | Holmes' Hawthorn |
| Crataegus intricata | Copenhagen Hawthorn |
| Crataegus macanleya | |
| Crataegus macracantha | |
| Crataegus macrosperma | Bigfruit Hawthorn |
| Crataegus mollis | Downy Hawthorn |
| Crataegus monogyna | English Hawthorn, Oneseed Hawthorn |
| Crataegus pruinosa | Waxyfruit Hawthorn |
| Crataegus punctata | Dotted Hawthorn |
| Crataegus scabrida | Rough Hawthorn |
| Crataegus schuettei | Schuette's Hawthorn |
| Crataegus straminea | |
| Crataegus submollis | Quebec Hawthorn |
| Crataegus succulenta | Fleshy Hawthorn |
| Crataegus INDET |
