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THE FERN BULLETIN 



Common spinulose shield-fern. Rich, wet woods. 

 Common throughout. 



Nephrodium Thelypteris (L.) Marsh Fern. 

 Swamps, wet woods and thickets. Common. 



Onoclea sensibilis (L.) Sensitive Fern. 

 Swamps, wet woods and thickets. Common. 



Onoclea sensibilis obtusilobata (Torrey). 

 Occasional. Several efforts on the part of the writer 

 to produce this form by mutilation have only resulted 

 in a reduction in number of the normal fertile stems. 



Pellaea atropurpurea (L.) Cliff brake. Blue 

 Fern. On rocks, preferring limestone. Very local. 

 Northampton, Monroe, Chester, Montgomery, Dau- 

 phin, Northumberland, Cumberland, Lancaster, 

 Franklin, Fulton, Bradford, Berks, Huntingdon!, 

 Westmoreland, Centre and Lehigh counties. 



Pellaea gracilis (Michx.) Slender cliff-brake. 

 On limestone. Known only from Sullivan and Ly- 

 coming counties in the north-central part of the moun- 

 tain belt. The southern limit of the species in the 

 east {Crypto gamma Sielleri Prantl.) 



Phegopteris dryopteris (L.) Oak Fern. Woods 

 and shaded rocky slopes. Local, but occurs throughout. 



Phegopteris dryopteris Robertiana. fHofr*.) 

 Limestone polypody. Reported in Porter's Flora from 

 Union City, Erie county in the extreme northwestern 

 part of the State. 



Phegopteris hexagonoptera (Michx.) Broad 

 Beech Fern. Woods and thickets. The common phe- 

 gopterid throughout. 



Phegopteris polypodioides. Fee. Long Beech Fern. 

 Woods and thickets. Locally abundant in the central 

 mountain belt occasional or rare elsewhere. 



