Nephrodium spinulosum intermedium (Muhl.) Frequent in rich woods in the northeastern counties, Starved Rock, Clute. Patterson says “infrequent” for the state.
Polystichum acrostichoides (Michx.) Will county, “north part of Cook county,” Higley and Raddin; Henderson, Patterson; Peoria, Brendel; Jackson, Bartley. For the state, “infrequent.” (P.) The variety incisum is occasionally reported.
Cystopteris bulbifera (L.) Frequent on shelves and in crevices of limestone cliffs and shady ravines in the Desplaines valley in Cook and Will counties, and in Kankakee county, Henderson, Patterson, Peoria, Brendel; Starved Rock, abundant, Clute. Patterson reports for the state, “shaded rocks, frequent.”
Cystopteris fragilis (L.) Rather frequent in rich woods and occasionally on rocks in Cook, Lake, Dupage, Will and Kankakee counties; Henderson, Patterson; Peoria, Brendel; Jackson, Bartley. “Common” for the state. (P.) Very variable in its forms.
Woodsia obtusa (Spreng.) Scarce on limestone rocks at Lemont, Cook county, abundant on sandstone at Oregon, Ogle county, “Marion county, Bebb; Wabash, Schneck; and southward.” (P.) Joliet, Will county, Ferriss.
Woodsia ilvensis (L.) “On sandstone cliffs near Oregon, Ogle county, Bebb.” (P.)
Onoclea sensibilis (L.) Common in wet woods and swamps in the northeastern counties. Peoria, Brendel; Jackson, Bartley. For the state “common.” (P.)
Onoclea struthiopteris (L.) Wet shades, Starved Rock, La Salle county, Henderson, Patterson; Peoria, Brendel; Fulton, Wolff. For the state “infrequent.” (P.)
Dicksonia punctilobula (Michx.) “Wabash county, Schneck.” (P.)