K.I.Chr. (Lange) No year - 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.
No known synonyms