- Osmundaceae, family Osmundaceae - large family of ferns widely distributed in temperate and tropical areas
--1 is a kind of fern family
--1 is a member of Filicales, order Filicales, Polypodiales, order Polypodiales
--1 has members:genus Osmunda; Leptopteris, genus Leptopteris; Todea, genus Todea