The Flora of the Cayuga Lake Basin 33 



12. Pellaea Link 

 1. P. atropurpurea (L.) Link. Cliff Brake. 



Crevices and ledges on the face of dry exposed calcareous cliffs; rare. Aug.-Sept. 



Enfield Glen, near the crest of the high cliffs (A. J. E. & L. F. Randolph) ; 

 Fall Creek (V. McCoy in C. U. Herb.) ; Esty Glen (A. H. Wright) ; ravine n. of 

 Esty Glen (D. in C. U. Herb.) ; on cliffs along the eastern shore of the lake; n. side 

 of Moore Creek just e. of Ludlowville village, near the large falls (A. Gershoy) ; 

 Taughannock Gorge, s. side, near the lower end. 



"N. H." and Vt. to Mackenzie and B. C, southw. to R. I., Ga., Miss., Tex., and 

 Calif., also in northern Mexico; rare or absent on the Atlantic Coastal Plain. 



13. Cryptogramma R. Br. 



1. C. Stelleri (Gmel.) Prantl. (Pellaea gracilis Hook.) Rock Brake. 



Dry shaded ledges in ravines, in calcareous soils ; rare. June 25-July. 



Enfield Glen, above Lucifer Falls (D. in C. U. Herb.!) ; Fall Creek (D. in C. 

 U. Herb.), opposite the old mill in Forest Home (Mrs. A. E. J. Webster) and back 

 of Prudence Risley Hall (A'. M. W.). 



Lab. to Alaska, southw. to Vt., Conn., N. Y., n. Pa., 111., Wis., and Colo. ; appar- 

 ently absent on the Atlantic Coastal Plain. Found also in Asia. 



14. Adiantum (Tourn.) L. 

 1. A. pedatum L. Maidenhair. 



Rich damp woodlands, in deep humus over calcareous gravels or loams ; frequent. 

 July-Aug. 



In most of the larger ravines of the basin, as Enfield, Six Mile Creek, Coy Glen, 

 and Salmon Creek ; also in woods in the McLean district. 



Newf. to Alaska, southw. to Ga., La., and Kans., and in the Rocky Mts. to Utah 

 and Calif. ; rare on the Atlantic Coastal Plain. Found also in Asia. 



15. Pteridium Scop. 

 1. P. latiusculum (Desv.) Maxon. (Pteris aqnilina of Gray's Man., ed. 7.) Com- 

 mon Brake. 



Dry sandy or gravelly banks and borders of woods, mostly in acid soils ; frequent, 

 and locally abundant. Aug. 25-Sept. 



Hills of Spencer, Danby, and Caroline ; about the crests of most of the ravines 

 of the basin; s. w. shore of Cayuga Lake; near Malloryville Bog; and elsewhere. 

 Newf. to Wis. and Wyo., southw. to D. C, W. Va., 111., and Ariz., including the 

 Coastal Plain. 



16. Polypodium (Tourn.) L. 

 1. P. virginianum L. (See Rhodora 24 : 125. 1922. P. vulgare of Amer. authors.) 

 Polypody. 



Dry shaded ledges and crests in ravines, in calcareous or somewhat acid soils ; 

 common. July 15- Aug. 



Lab. and Newf. to Man., southw. to Ga., Ala., and Mo., including the Coastal 

 Plain. 



2. OSMUNDACEAE (Flowering Fern Family) 



1. Osmunda (Tourn.) L. 



a. Fronds fertile at the tip, 2-pinnate. 1. O. regalis, var. spectabilis 



a. Fronds fertile in the middle, 1-pinnate. 2. O. Claytoniana 



a. Fronds wholly dimorphic, the fertile and sterile ones separate, the latter 1-pinnate. 



3. O. cinnamomea 



