Hawthorn, Crataegus
| 10-5 | 1966 | Crataegus arnoldiana | Arnold hawthorn |
| 10-11 | 1983 | Crataegus arnoliana O.P. |
Hawthorn |
| 10-10 | 1967 | Crataegus beata |
Hawthorn |
| 10-7 | 1966 | Crataegus chlorosarca |
Blackrfruit hawthorn |
| 10-4 | 1966 | Crataegus chrysocarpa |
Round-leaved hawthorn |
| 12-1 | 1972 | Crataegus douglasii |
Douglas hawthorn |
| 10-2 | 1966 | Crataegus erythropoda |
Chocolate hawthorn |
| 12-6 | 1981 | Crataegus macracatha (succulenta) |
Fleshy hawthorn |
| 10-13 | 1972 | Crataegus pedicellata |
Ontario hawthorn |
| 10-8 | 1975 | Crataegus rivularis |
River hawthorn |
| 10-6 | 1968 | Crataegus scabrida |
Rough hawthorn |
| 23-8 | 2013 | Crataegus sp. (floribunda?) |
Hawthorn |
| 10-14 | 1968 | Crataegus submollis |
Quebec hawthorn |
| 10-12 | 1972 | Crataegus x mordenensis 'Snowbird' |
Snowbird hawthorn |