Plate I. 
1. Adder’s Tongue. Ophioglossum vulgatum. i to 2 in. 
2. Moonnvort. Botrychium simplex. 2 to 5 in. 
3. Moonwort. Botrychium matricaria. 3 to 6 in. 
4. Common Rock. Fern. Polypodium vulgare. 6 to 10 in.; evergreen; fruit clots large and round. 
5. Woodwardia angustifolia. 1 ft. high; fertile plants, with narrow curled-up leaflets, and 
fruit dots parallel to midrib. 
6 . Mountain Fern. Phegopteris po/ypodioides. 12 in.; narrow triangular, hairy ; fruit dots small. 
7. Phegopteris hexagonoptera. 12 to 15 in.; broad triangular, smooth. 
8. Sensitive Fern, Wood Swamp Fern. Onorlea sensibilis. 2 to 4 ft. 
