Family Code: PENTHO Genus Code: PENTH Genus CN: penthorum Genus Authority: L. Genus Summary: A genus of 2 species, herbs, of e. North America and e. and se. Asia. The only other species in the genus is P. chinense Pursh, of e. Russia, China, Korea, and Japan. Genus References: Freeman in FNA (2009); Haskins & Hayden (1987)=Z; Thiede in Kubitzki, Bayer, & Stevens (2007). Last Updated: 2019-11-29 Publish: 1