Acrosilchufn f ronde pinnate . Gron. Fl. Virg. 
2 : 198. 
A. polypodzoides Yj. Sp. PI. 1068. 
PolypodiiLin incanufn Sw. i788. Prodrom. 131. 
Eaton\Y^x\\^ N. Am. i: 197. t. 26. f 2 ; in 
Gray, Man. 680. Clute^ Ferns 198. 
P. polypodiodes A, S. Hitchcock, 1893. Rep. 
Missouri Bot. Gard. 156. Underw, in 111. Fl. 
I 133 ; Nat Ferns 82 ; in Britt. Man. 7. Waters^ 
Ferns 83. 
Alai^glnaria polypodioides Tm. 1905. Torreya 
5 171- 
Gray Wall Frrn. 
Plants 0.5.. 1 .5 dm. high; leaves nearly pinnate, cori- 
aceous, thickly covered on the low^er side with grayish 
scales ; sori near the margin. 
O n r o c k s o r t r e e s . ^ 
Near Great Falls, Md., W. P, Hay ; Dismal Swamp Va., WcuuU 
Coville] Mar ion Co., ]\^tss Vciil^ Siniill. 
7 PHEQOPTERiS Fee. 
Mot a mot foiigere dii Jietre, Ce genre a p07ir le type 
Phegopteris des auteur^ ( cj^y^yo^^hetre ; irrepU fotigei-e) 
Fee, 1851. Gen, Fil. 361. 
Rootstock slender, creeping. Leaves triangular, 2-3pin- 
natifid or ternate. Sporecases in sori without indusia. 
19 
