Haydenoxylon haberianum (Hammel) M.P. Simmons Haydenoxylon haberianum (Hammel) M.P. Simmons in Novon 23(2): 224. 2014 sec. Barrie 2014≡Gymnosporia haberiana Hammel in Novon 7(2): 147–149, f. 1. 1997 syn. sec. POWO 2019