Cross Made
Troyer citrange originated from a Washington navel sweet orange × Poncirus trifoliata hybridization made by E. M. Savage under the direction of Walter T. Swingle at Riverside in 1909.
- E. M. SavageBreeder
Made the 1909 Washington navel × Poncirus trifoliata cross.
- Walter T. SwingleDeveloper
Directed the USDA breeding work under which E. M. Savage made the Troyer cross.
Sources: [1]