Chen Collection, Middle Volume
Radical: Tree (mù)
Page 552, Entry 16
Pronounced gan (rising tone).
Jade Chapters (Yupian): The ganlan (olive) is a fruit tree. It grows in Jiaozhi.
Yellow Maps of the Three Capital Districts (Sanfu Huangtu): When Emperor Wu of the Han dynasty conquered Nanyue, he obtained over one hundred olive trees.
Flora of the Southern Regions (Nanfang Caomu Zhuang): The olive blossoms in the second month and ripens in the eighth or ninth month. During the Wu era, they were offered as an annual tribute and bestowed upon close ministers.
Also mentioned in Records of Eastern Qi (Qidong Yeyu): It is also called the green fruit, the remonstrance fruit, and the loyal fruit.
Poetry Commentary of Lingchuan (Lingchuan Shizhu): People of the south call it gelan.
Also according to Collected Rhymes (Jiyun): Pronounced qian (rising tone). The meaning is the same.