marsh fern References marsh fern fern genus Ask Anything Homework Help Also known as: Thelypteris Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: fern/ Venation… (Cyathea), lady ferns (Athyrium), and marsh ferns (Thelypteris). Read More… (Cyathea), lady ferns (Athyrium), and marsh ferns (Thelypteris). Read More