Family CN: Hornwort Family Family Code: CERATO Family Parent: [in CERATOPHYLLALES] Family Authority: S.F. Gray 1821 Summary: A peculiar and apparently very primitive family, of a single genus and about 6 species, aquatic herbs, of cosmopolitan distribution. Reference: Les in FNA (1997); Les (1985, 1986, 1988a,1988b, 1988c, 1989)=Z; Les in Kubitzki, Rohwer, & Bittrich (1993). Key adapted from Les. Last Updated: 2020-01-01 Publish: 1