60 POLYPODIACEAE 



N. Y. Ulster, Sullivan, Delaware and Greene counties. 

 N. J. Mt. Tammany and above Philipsburg, Warren Co., other- 

 wise unknown. 

 Pa. Pike, Lackawanna, Carbon, Monroe, Lehigh and North- 

 ampton counties. 



Tertiary, o: Cretaceous, o: Older Formations, increasing gener- 

 ally westward and northward. 117-189 days. Sea level-3,980 ft. 



7. A. Bradleyi D. C. Eaton. On rocks: N. Y. to Ga., Ala., Ark. 

 and Mo. 



Known in our area only from the predominately limestone region 

 in the Shawangunk Mountains in Ulster Co., N. Y., an area north 

 of the moraine with a growing season of about 128-140 days. 



A hybrid, Asplenium platyneuron X Camptosorus rhizophyllus, long known as Asple- 

 nium ebenoides R. R. Scott, has been recorded. It is to be looked for in our area 

 wherever both the parent plants occur. 



12. Athyrium Roth. 



Blades bipinnatifid; segments lightly crenate-serrate. 1. A. thelypteroides. 



Blades bipinnate; segments variously incised or deeply serrate. 2. A. FUi£foemina. 



1. A. thelypteroides (Michx.) Desv. (A. acrostichoides (Sw.) 



Diels). In rich moist woods: N. S. to Minn., Mo. and Ga. 



Conn. Rare southward, increasing northwestward. 



N. Y. Rare on L. I. and S. I., increasing northward. 



N. J. Very rare in Monmouth Co., increasing northward, unknown 



elsewhere. 

 Pa. Throughout the area. 



Tertiary, 0: Cretaceous, very rare: Older Formations; increasing 

 northward. 117-220 days. Sea level-3,850 ft. 



2. A. Filix-foemina (L.) Roth. In woods and thickets: Newf., 



B. Col., the Gulf States and Cal. Also in Eu. and Asia. 



Throughout the range, less common southward, especially in 

 the pine-barrens. 



13. Adiantum [Tourn.] L. 

 I. A. pedatum L. In woods: N. S. and Que. to Alaska, south to 

 Ga., La., Kan.; Rocky Mts. to Utah and Cal. Also in Asia. 



Throughout the range except in the pine-barrens and the region 

 east and south of them, there not recorded. 



