source plant or animal for.... | 山核桃 |
英文.... | Genus containing around 18 species of deciduous timber and nut-producing trees native to eastern North America and eastern Asia. Fossil remains identifiable as belonging to the genus are found in western North America, Greenland, Iceland, and Europe. It has tough heavy wood, and drupes (mostly with a hard woody rind or husk) enclosing 'nuts,' the kernels of which in several species are edible. |