| Aesculus hippocastanum | Horse Chestnut | Hippocastanaceae | Aesculus asplenifolia. Aesculus castanea. Aesculus memmingeri. Aesculus procera. | 3 | 4 |
| Castanea mollissima | Chinese Chestnut | Fagaceae | C. bungeana. C. duclouxii. C. hupehensis. | 3 | 2 |
| Castanea sativa | Sweet Chestnut | Fagaceae | C. vesca. C. vulgaris. Fagus castanea. | 5 | 2 |