1. Bauman’s May or Bigarreau de Mai.
2. Black Eagle.
3. Knight’s Early Black.
4. May Duke.
5. Elton.
6. Bigarreau, or Spanish Yellow
7. Belle de Choisy.
8. Black Tartarian.
9. Downer’s Late.
10. Napoleon.
For a collection of two trees, 4, 9; for four trees, add 6 and 10.