Eqidsetaceoe and Filices. 
117 
PTERIDOPHYTA. 
Equisetace^e. (Horsetail Family.) 
Equisetum. L. Horsetail. Scouring rush. 
728. 
*E. arvense , L. Common horsetail. 
In sandy and gravelly soil. Common 
road tracks. 
along rail- 
729. 
F. limosum , L. 
Common in shallow water. 
730. 
E. robustum , Braun. 
Growing along the C. M. & St. P. R. 
Lakeside. Local. 
R. south of 
731. 
E. Icevigatum , Braun. 
Not rare throughout the region. 
Filices. (Fern Family.) 
Polypodium, L. Polypody. 
732. *P. vulcfare, L. 
Not rare on rocks along lakes. 
Adiantum, L. Maiden hair. 
733. *A. pedatum , L. 
Common in rich, moist woods. 
Pteris, L. Brake or bracken. 
734. P. aqidlina , L. Common brake. 
Common in open woods and thickets. 
Pell^ea, Link. Cliff-brake. 
735. P. atropurpurea , Link. 
On faces of rocks about the lakes. Local. 
Asplenium, L. Spleenwort. 
736. *A. Felix-fcemina , Bernh. 
Pich woodlands. Not uncommon. 
Aspidium, Schwartz. Shield fern. Wood fern. 
737. A. Thelypteris , Schwartz. 
Very common in all the marsh lands about the 
lakes. 
