Very large Asian pear hybrid. Origin: may trace back to seed from China and is likely a natural hybrid between P. pyrifolia and P. communis. Found ~1887 in Hokkaido, where it was originally called Iida Nashi; tested at Aomori 1933; became main cultivar in Hokkaido by 1956, named Mishirazu by Dr. Hoshino. Tree: productive and cold hardy, easily survives-30 °C; vigor low, suitable for close planting; has been used in breeding and is a parent of Amatama, Hokuto, Hatsuhi, Kangyoku, Kitahoshi, and Zaosu. Fruit: large to very large, often more than 450 g, considered unattractive; skin rough brown russet; flesh crisp, crunchy; flavor good; used for salads and for fresh eating; ripens late September to early October, with Taihaku.