Europe, Eastern Europe, Southern Europe, Russia/Siberia, Iran, Central Asia, Southern Asia, Western Asia, India, Nepal, China
Europe
Black walnut
Beau Narcisse, Belle de Crécy, Cardinal de Richelieu, Charles de Milles, Complicata
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21
H1, H2, 9, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24