POLYPODIACEAE 55 



Indusia wanting. 



Basal pinnae sessile or partially adnate; rachis more or less 

 alate. 

 Blades usually longer than broad; rachis and midveins 



freely chaffy; under surfaces pilose. II. D. Phegopteris. 



Blades usually broader than long; rachis and midveins 



scarcely scaly; under surfaces slightly pubescent. 12. D. hexagonoplera. 



Basal pinnae long-stalked, approaching the terminal por- 

 tion in size; rachis not alate. 13. D. Dryopleris. 



1. D. noveboracensis (L.) A. Gray. In moist woods and thickets: 



Newf. to Ont. and Minn., south to Ga., Ala. and Ark. 

 Common throughout the range except the pine-barrens. 



2. D. Thelypteris (L.) A. Gray. In marshes and wet woods; 



rarely in dry soil: N. B. to Man., south to Fla., La. and Tex. 

 Also in Europe and Asia. 



Throughout the range, but less common in the pine-barrens than 

 elsewhere. 



3. D. simulata Davenp. In swamps: Me. to Md. Reported 



from Mo. 



Rare and scattered over most of our area, more common in the 

 pine-barrens than elsewhere. 



4. D. cristata (L.) A. Gray. In wet woods and swamps: Newf. 



to Sask., south to Va., Ky., Ark., Neb. and Idaho. Also in 

 Eu. and Asia. 

 Throughout the range, except in the pine-barrens. 



5. D. Clintoniana (D. C. Eaton) Dowell. In swampy woods: 



Me. and Ont. to Wise, and N. Car. 



Throughout the range, except on the coastal plain of New 

 Jersey, there recorded from a single station in Camden Co., from 

 which it has not been recently collected. 



6. D. Goldieana (Hook.) A. Gray. In rich woods: N. B. to 



Minn., south to N. Car., Tenn. and Iowa. 



Conn. Scattered over most of the state, but rare, increasing 



northwestward. 

 N. Y. Rare and local on S. I., not reported from L. I., increasing 



northward. 

 N. J. Hunterdon, Warren, Morris (according to Mackenzie) and 



Essex counties; reported from Sussex Co. 

 Pa. Northampton, Lehigh, Bucks, Montgomery, Berks, Dela- 

 ware and Chester counties. 



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

 ward. 117-220 days. Sea level-3,900 ft. 



