Hymenophyllum (Filmy Fern) is a genus of herb in the family filmy-ferns. They are native to Hawaii, Pacific Basin excluding Hawaii, Canada, The Contiguous United States, Puerto Rico, U.S. Virgin Islands, and Alaska. They have bipinnate + pinnatifid leaves. Individuals can grow to 2.8 m. They have alternation of generations.
EOL has data for 15 attributes, including: