Yi-Li Keng (Chinese: 耿以礼 Gěng Yi-Li; 1897, Nanjing – 1975) was a Chinese botanist, specializing in the study of grasses (the family Poaceae), particularly the tribe Triticeae of the Poaceae.
[2] After graduation, he collected plants in Zhejiang Province with Hsen-Hsu Hu and Sung-Shu Chien.
[4] Based on the specimens of the Institute of Zoology and Botany, KENG completed a study of Pleioblastus (Poaceae) in southwestern China in 1935, describing six new species.
[4]In order to collect seeds of pasture grasses, he joined, during July and August 1935, the Roerich Expedition to Inner Mongolia.
Keng's work in describing grasses in China was incorporated into the Chinese-language Flora Reipublicae Popularis Sinicae, an effort to complete the Flora of China.