Shen Collection, Upper Volume Radical: Grass (cǎo) Rui Kangxi Strokes: 22 Page 1067, Entry 20 Pronounced rui (rising tone), based on Tang Rhymes (Tangyun) and Collected Rhymes (Jiyun). Book of Rhymes (Yunhui): The flower of a plant. Broad Rhymes (Guangyun): The inside of a flower is called a calyx, and the outside of a flower is called a stamen.