Plants in the Hypnaceae family. Hypnaceae plant family online and more online! Native plants, seed and flowers, wildflowers database and information. Native American plants Knowledge and facts online. Standardized facts and information about plants, mosses, liverworts, hornworts, and lichens of the USA. Hypnaceae plant family Technical information used to identify plant families. Accepted scientific names and synonyms of selected plant families. Search for all the scientific names of a particular plant