' POLYPODIACEAE. 13 



5. Drtopteris Goldieana (Hook.) A. Gray. M. p. 15. Eich woods. Sum- 



mer. 



Philadelphia— Wissahickon Greek above Majiayunk, Mart. (B. C), 

 Pennypaek (Ee.). Bucks— Springfield (Fr.). Montgomery— (P.). Dela- 

 ware—Bishop's Mills (Fu.), Cpncord .("W. Tr.), Middletown (S. Tr.). 

 Chester— (P .\. Berks— Beading (P.). Lehigh— Lehigh Mountain (Kr.). 

 Northampton— Easton (Ca.). 



New Castle — Brandywine, Tatnall; Harvey, Commons and Tatnall. 



6. Drtopteris marginalis (L.) A. Gray. M. p. 15. Eocky woods.. Sum- 



mer. 



la. Drtopteris spintoosa intermedia (Muhl.), Underw,, M. p. 16. "Woods. 

 Summer. 

 Pennsylvania— General. 



76. Drtopteris spinulosa dilatata (Hoffm.) Underw. M. p. 16. "Woods. 

 Summer. 

 Pennsylvania — General. 

 8. Drtopteris Boottii (Tiickerm.) Underw. M. p. 16. Moist woods. 

 Summer. 

 Philadelphia — (P.). Montgomery— (P.). Berks— Heister (P.). 

 New Castle— 2 miles S. "W. of Wilmington, Commons. 



11. PHEGOPTEEIS Pee. Beech Pern. 



Leaves triangular, 2-pinnatifid; pinnae sessile, adnate to the winged raehis. 

 Leaves longer than broad, usually dark green. 1. P. Phegopteris. 

 Leaves as broad as long or broader, usually light green. 



2. P. hexagonoptera. 

 Leaves ternate, with the three divisions petioled; raehis wingless. 



3. P. Dryopteris. 



1. Phegopteris Phegopteris (L.) Underw. M. p. 16. Damp woods. Sum- 



mer. 

 Philadelphia— Graver's Lane Station (C. E. S.). Lehigh— Laurel Hill 

 (Kr.). Northampton— Maston Greek (P.). 



2. Phegopteris hexagonoptera (Michx.) Pee. M. p. 16. Open woods. 



Summer. 



3. Phegopteris Drtopteris (L.) Fee. Oak Fern. M. p. 17. Moist woods 



and swamps. Summer. 

 Philadelphia— Graver 's Lane Station (C. E. S.). Montgomery— Eoek- 

 ledge (Br.). 'Delaware — Wallingford (Ca.) (Pr.). Chester — (P.). 

 Lancaster— Peach Bottom (Cr.) (Le.). Northampton— Glendon (P.). 



12. PlLIX Adans. Bladder Fern. 



Leaves broadest at base, long-tapering, bearing bulblets beneath. 



, , 1. F. oulbifera. 



Leaves scarcely broader at base, short-pointed; no bulblets. 2. F. fragilis. 



1. Filix bulbifbra (L.) Underw. M. p. 17. Shaded ravines. Summer. 

 Bitcfcs— Narrowsvillej Point Pleasant (Ws.). Montgomery— Consho- 

 hocken, E. Dwrand (B. 0.). Chester^ Coatesville (Le.) (St.). Lancaster 

 — Conestoga (Cr.) (Gi.), Pequea Creek (Pr.). Lehigh— Hokendauqua 

 Creek, Eockdale (Kr.). Northampton— Wind Gap (He.). 



