In Situ Observations of the Gametophytes of Six Fern Species of Costa Rica. - Aros-Mualin, Daniela; Flores-Galván, Catalina; Páez, Saúl; Pelosi, Jessie A.; Sorojsrisom, Elissa; Yawn, Noah; Watkins Jr., James E. (American Fern Journal, 2023)