a9 
D. Thelypteris (L.) A.Gray.—In wet woods or marshes, or rarely 
in dry meadows. PIKE, Brown and Saunders; NORTH- 
AMPTON and Bucks, Porter ; PHILADELPHIA; DELAWARE, 
Tinicum; CHESTER, (Flora Cestrica); LANCASTER; FRANK- 
LIN, Green ; HUNTINGDON, Lowrie; ALLEGHENY, Shafer ; 
ERIE, Fenno. 
Polystichum Roth. 
P. acrostichoides (Michx.) Schott.—On rocky hillsides or in 
woods.—PIKE, Brown and Saunders ; MONROE, NoRTH. 
AMPTON and Bucks, Porter ; PHILADELPHIA; DELAWARE, 
(Smith’s Catalogue); CHESTER, (Flora Cestrica); LANcas- 
TER and FRANKLIN, Porter, CoLumBia, Heller; CENTRE, 
Rothrock ; SOMERSET, Brown and Saunders ; ALLEGHENY, 
Shafer ; VENANGO, Bell. 
P. acrostichoides Schweinitzii (Beck) Small.—NortT#- 
AMPTON, Easton, Porter ; MONROE, Small. 
P. Braunii (Spenner) Lawson.—In rocky woods. SULLIVAN, 
Griffith. 
Phegopteris Fée. 
P. Dryopteris (L.) Fée.—In moist woods. Wayne, Garber; 
PIKE, Brown and Saunders ; MONROE, Small, WYOMING, 
Shirk ; LACKAWANNA, Dudley ; TioGA, Garber; LUZERNE; 
Heller; NorTHAMPTON, Glendon, Sezbert; DELAWARE, 
Price; CHESTER, Diffenbaugh; WANCASTER, Mifflin; 
HUNTINGDON, Pennsylvania Furnace, /orter; BLAIR, 
Boecking ; SOMERSET, Brown and Saunders ; ARMSTRONG, 
Knipe ; ERIE, Fenno. 
P. hexagonoptera (Michx.) Fée.—In dry woods and on hill- 
sides. Monroe; Luzern», feller; NORTHAMPTON, 
Porter ; MONTGOMERY, Saunders; DELAWARE, Jahn ; 
CHESTER, (Flora Cestrica); LANCASTER; FRANKLIN and 
Huntincpon, Porter; YorK, MacElwee ; SOMERSET, 
Brown and Saunders ; BEAVER, Shafer. 
