Crataegus × aberrans (Lange) K.I.Chr., 1992 2% complete

No common name

Christensen KI (1992) Revision of Crataegus Sect. Crataegus and Nothosect. Crataeguineae (Rosaceae-Maloideae) in the Old World. Systematic Botany Monographs 35: 1-199. doi: 10.2307/25027810.