Pyrus × bretschneideri (or Pyrus bretschneideri), the ya pear or pearple or Chinese white pear[1] (Chinese: 白梨; pinyin: báilí), is an interspecific hybrid species of pear native to North China, where it is widely grown for its edible fruit.
Recent molecular genetic evidence confirms some relationship to the Siberian pear (Pyrus ussuriensis), but it can also be classified as a subspecies of the Chinese pear Pyrus pyrifolia.
Along with cultivars of P. pyrifolia and P. ussuriensis, the fruit is also called the nashi pear.
The “Ya Li” (Chinese: 鸭梨; pinyin: yālí), literally "duck pear" due to its mallard-like shape, is one cultivar widely grown in China and exported around the world.
[3] Under the International Code of Nomenclature for algae, fungi, and plants, such backcross hybrids are named within the species P.