Obviously, it prefers a steady water source. It can be very similar in appearance to a large Wood Fern - Dryopteris arguta. Fringed tips and sides. In two rows on undersides of pinnae. Nearly all trails in sheltered areas.
Fronds pinnate to nearly or fully bipinnate.
One of the friendlier ferns - it feels as soft as it looks. In rows along veins on underside of all pinnae. All trails and areas. Image at left shows front and back views of pinnae.