Dennstaedtia Hay Scented Fern

Hayscented fern is very common, and it often grows in large colonies, forming a carpet. It can be identified by its lacy, light-green fronds. It can be confused with New York fern, but hayscented fern has triangular fronds, whereas New York fern fronds taper to tiny leaflets at the bottom.
Dennstaedtia punctiloba

(Hay Scented Fern)