1907] 
Check List of the Flora of Mihvaukee County. 
169 
OPHIOGLOSSACE^. 
Botrychium viginianum (L.) Sw. Botrychiimi. 
Throughout county. Common. 
OSMUNDACE^. 
Osmunda regalis L. Royal Fern. 
Throughout county. Locally abundant. 
O. cinnamomea L. Cinnamon Fern. 
Common near St. Francis and locally throughout county. 
O. Claytoniana L. Clayton's Fern. 
Throughout county. Locally abundant. 
POLYPODIACE.^:. 
Adiantum pedatum L. Maiden-hair Fern. 
Throughout county. Common. 
Pteris aquilina L. Ptericlium aquiUniim (L.) Kuhn. 
Throughout county. Occasional. 
Cryptogramma Stelleri (Gmel.) Prantl. Rock-brake. 
In Town of Franklin. 
Asplenium Filix=femina (L.) Bernh. Lady Fern. 
Throughout county. Common. 
Camptosorus rhizophyllus (L.) Link. Walking-fern. 
Menomonee Valley. Very rare. Reported from Town of 
Franklin. 
Aspidium Thelypteris (L.) Sw. Bryopteris Thelypteris (L.) Gray. 
Shield Fern. Sec. 27, Oak Creek. Abundant. 
A. cristatum (L.) Sw. Dryopteris cristata (L.) Gra3\ 
Throughout county. 
A. spinulosum (O. F. Miiller) Sw. Dryopteris spinulosa {'R^tz.) Kuntze. 
Sec. 5 Greenfield. Abundant. 
A. spinulosum var. intermedium. ,D. C. Eaton. Dryopteris spinulosa 
intermedia (Muhl.) Underw. Sec. 27, Town of Lake. 
Cystopteris bulbifera (L.) Bernh. Fili.v bulb if era (L.) Underw. 
Bladder Fern. Menomonee Valley, and in Sec. 29, Town of 
IVIilwaukee. 
C. fragilis (L.) Bernh. Fili.r frag His (L.) Underw. 
Throughout county. Common. 
