SCHIZAEACEAE 49 



Pa. Near Mt. Pleasant, Wayne Co., and Fleetwood, Berks Co. 



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

 ward. Not south of the moraine. 117-189 days. Sea level- 

 4,020 ft. 



7. B. silaifolium Presl. In moist open places: N. Eng. and N. Y., 



to Wise, west to Alaska and U. Calif. Rare in our area. 



Conn. Fairfield, Litchfield and New Haven counties. 

 N. J. Newton. N. Y. Westchester, Columbia and Greene coun- 

 ties. 



8. B. virginianum (L.) Sw. In rich woods: B. Col., south to 



Mex. and the W. I. Also in Eu. and Asia. 



Throughout the range, except in the pine-barrens; always 

 increasing northward. 

 The reported occurrence in Conn, of B. Lunaria (L.) Sw. has not been verified. 

 It is otherwise unknown in our area. 



OSMUNDACEAE 

 1. Osmunda [Tourn.] L. 



Blades bipinnate, some of them fertile at the apex. 1. O. regalis. 



Herbaceous blades bipinnatifid. 



Pinnae of sterile blade with a tuft of tomentum at the base; 



blades normally dimorphous. 2. 0. cinnamomea. 



Pinnae of sterile blade not so tufted; blades normally fertile 



only in the middle. 3. O. Claytoniana. 



i. O. regalis L. In low swamps, woods or marshes: E. N. 

 Am., Mex. and the W. I. Also in S. Am., Eu., Asia and 

 S. Af. 



Common throughout the range. 



2. O. cinnamomea L. In low places: Eastern N. Am., Mex. and 



the W. I. Also in Asia. 



Common throughout the range. 



3. O. Claytoniana L. In swamps and moist woods: Newf. to 



Minn., south to N. Car. and Mo. Also in India and China. 

 Throughout the range, except in the pine-barrens and east and 

 south of them ; always increasing northward. 



SCHIZAEACEAE 



Leaves short, tufted, rigid, the sterile simple. 1. Schizaea. 



Leaves elongate, climbing, compound; leaflets palmately lobed. 2. Lygodium. 



5 



