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Maleae
The Maleae (incorrectly Pyreae) are the apple tribe in the rose family, Rosaceae. The group includes a number of plants bearing commercially important fruits, such as apples and pears, while others are cultivated as ornamentals. Older taxonomies separated some of this group as tribe Crataegeae,〔G. K. Schulze-Menz 1964. ''Reihe Rosales''. in ''A. Engler's Syllabus der Pflanzenfamilien mit besonderer Berücksichtigung der Nutzpflanzen nebst einer Übersicht über die Florenreiche und Florengebiete der Erde'', Gebrüder Borntraeger, Berlin〕 as the Cydonia group (a tentative placement),〔 or some genera were placed in family Quillajaceae.〔 The tribe consists exclusively of shrubs and small trees. Most have pomes, a type of accessory fruit that does not occur in other Rosaceae. All except ''Vauquelinia'' (with 15 chromosomes) have a basal haploid chromosome count of 17, instead of 7, 8, or 9 as in the other Rosaceae. There are approximately 28 genera that contain about 1100 species worldwide, with most species occurring in the temperate Northern Hemisphere. == Nomenclature == The name Maleae is required by the International Code of Nomenclature for algae, fungi, and plants (article 19), for any group at the tribal level that includes the genus ''Malus'', but not either of the genera ''Rosa'' or ''Amygdalus''.
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