Chen Collection, Middle Volume. Radical: Tree (mù). Kangxi stroke count: 10. Page 522, Entry 09.
Tang Rhymes (Tangyun): Pronounced yi. Collected Rhymes (Jiyun) and Rhymes Meeting (Yunhui): Pronounced yi. Proper Rhymes (Zhengyun): Pronounced yi.
Explaining Graphs (Shuowen): Refers to the flowering cherry or similar tree.
Approaching Elegance (Erya), Explanation of Trees: The flowering cherry is known as yi.
Note: The tree resembles a white poplar; in the Jiangdong region, it is called fu-yi.
Lu Ji, Commentary on the Flowering Cherry: States it is the bush cherry. Also known as sparrow plum.
Also, yi-yang is the name of a tree.
Ancient and Modern Records (Gujin zhu): Its leaves are round and its stems are delicate, shaking vigorously in a light breeze. Also known as high-flyer. Also known as solitary-shaker.
Also, bo-yi is the name of a tree.
Record of Linyi (Linyi ji): Its branches and leaves emerge from the base, hollow within and dense, appearing like hanging drums when viewed from afar.
Also, Supervisor of the Yi Palace (Yi zhong jian), the name of an official post.
History of the Former Han Dynasty (Qian Han shu), Biography of Su Wu: Supervisor of the Yi Palace Su Wu remained in the court of the Xiongnu chieftain for nineteen years before returning.
Also, Guangyun: Pronounced chi. Jiyun: Pronounced xie. Also pronounced ye. The meanings are the same.