Breeds and Cultivars
Most of the extinct and rediscovered breeds and cultivars are still at Cubits.org.
Plant species that have been cultivated [i.e. cultivars]:
Fruit trees
| Name | Proving paper |
| Cornus mas | Weaver, Richard E. Jnr. (1976). The Cornelian Cherries. Arnoldia 36(2): 50-56. |
Ornamental trees
| Name | Proving paper |
| Koelreuteria paniculata (Golden-rain tree) | Santamour, Frank S. Jnr. and Spongberg, Stephen A. (1996). 'Rose Lantern': A New Cultivar of Koelreuteria paniculata, the Golden-Rain Tree. Arnoldia 56(2): 32-37. |
Root vegetables
Arracacia xanthorrhiza (Arracacha)