104 



Dryopteris Felix-3Ias, (L.) Schott. Male-feru. 

 Among rocks in the Black Hills. 



Asi)leiiiuiu trichoiiianes, L. Maiden-hair spleanwort. 

 Crevices of rocks in the Black Hills. 



Aspleiiiuin Felix-foeiniiia, (L.) Fee. Bernh. Lady- 

 fern. 



In the Black Hills. 



Aspleiiiuiu Septeiitrioiiale, (L.) Hoflfm. Northern 

 spleanwort. 



In crevices of rocks in the Black Hills. 



Adiautuiii Capillus- Veneris, L. Venus-hair fern. 



Along a warm stream, near iCascade, in the Black 



Hills. *_ 



Pteris aqiiiliiia, L. Brake. 



Near Custer, in the Black Hills. 



Pellaea atropnrpiirea, (L.) Link. Purple-stemed Cliff- 

 brake. 



Common in crevices of rocks in the Black Hills. 



Pellaea Breweri, Eaton. Brewer's Cliff -Brake. 



In limestone crevices near Bull Spring, in the Black 

 Hills. 



Cheilaiithes g-racilis, (Fee.) Mett. Slender Lip-fern. 

 On exposed rocks in the Black Hills. 



Polypodiuiii vulg-are, L. Common Polypody. 

 In crevices of rocks in the Black Hills. 



Polyportium vulg-are rotuiidatuui, Wilde. Round- 

 lobed Polypody. 



In crevices of rocks near Custer, in the Black Hills. 



Marsileace^. — Marsilea Family. 



Marsilea vestita, Hook & Grev. Hairy Marsilea. 



Very abundant in swails and ditches from the James 

 river valley westward to the Black Hills. 



*Bessey, C. K. Bot., Gaz., Vol. XXVI, N0.3, 211. 



