Milk pear. Sydney, belongs to the Rosaceae, pear genus, Sydney species, light-loving and temperature-loving, for light-loving plants, as early as 2000 years ago there is the emergence of Sydney, is a relatively old pear varieties, to sichuan and anhui around the production of Sydney is the most famous, also known as milk pear, in the "political and evidence class materia medica - pear" cited in the "chart of the scripture materia medica": "milk pear out of xuancheng, the skin is thick and solid flesh, the flavor of its very long,. "Ming Li Shizhen" compendium of materia medica - fruit two - pear ":" milk pear is snow pear." It is round or oblate in shape, the top and the base are high and low, the longitudinal diameter can be up to 8-9 centimeters, and the transverse diameter is 9-9.5 centimeters.