Metroxylon sagu, the true sago palm, is a species of palm in the genus Metroxylon, native to tropical southeastern Asia. The tree is a major source of sago starch.

Zhao Rukuo, also romanised as Zhao Rugua, Chau Ju-kua, or as Zhao Rushi, was a Chinese government official and writer during the Song dynasty. He wrote a two-volume book titled Zhu Fan Zhi. The book d