Polystichum POLYPODIACEAE Dryopteris 



throughout our area; common in the northern portion; rarer south- 

 ward. 



Var. Schweinitzii (Beck) Small. 



Reported from New Castle County only, with but one collec- 

 tion in recent years: old race bank along Red Clay Creek, south 

 of Lancaster Pike (F. M. Jones), R. R. Tatnall, 2 July 1927 

 (T). 



Dryopteris Adans. {Aspidium Sw.) Wood Fern. 



Shield Fern. 



D. spinulosa (Miiller) Ktze. Toothed Wood-fern. 



Frequent in wet, rocky, upland woods, and in low, moist woods 

 of the Coastal Plain, southward to Accomac County. 



D. intermedia (Muhl.) Gray. {D. spinulosa var. intermedia 

 (Muhl.) Underwood.) Evergreen Wood-fern. 

 Frequent in rocky woods of the Piedmont; rare in sandy woods 

 southward to Wicomico County: pine woods 3 mi. n. e. of White- 

 haven (Wi), A. V. Smith & R. R. Tatnall, 4564, 1 Aug. 1940 

 (T,A). 



D. marginalis (L.) Gray. Marginal Shield-fern. 



Common on rocky wooded slopes of the Piedmont; frequent on 

 sandy banks of the Coastal Plain, southward to Wicomico County 

 (A. V.Smith). 



D. Goldiana (Hooker) Gray. Giant Wood-fern. 

 Infrequent, in rocky woods of the Piedmont. 



X D. celsa (Palmer) Small. (D. Goldiana X Clintoniana) . 



Rare. Abundant at a single station in woods on Sinepuxent 

 Neck (Wo), 8 mi. s. s. w. of Ocean City (A. V. Smith), R. R. 

 Tatnall, 4755, 12 Oct. 1940 (T, A). 



D. Clintoniana (D. C. Eaton) Dowell. Broad Swamp-fern. 



Rare: Centreville (NC), Commons, 10 Aug. 1867 and 13 June 

 1877 (A); Mt. Cuba (NC), Commons, 10 Aug. 1867 and 26 May 

 1884 (A); swamp 1 mi. s. w. of Kenton (K), Wherry, 12 Oct. 1935 

 (A). 

 D. cristata (L.) Gray. Crested Swamp-fern. 



Infrequent in swamps and low woods, Piedmont, and Coastal 

 Plain southward to Wicomico County (A. V. Smith). 



[5] 



