Jones: Flora of Illinois, 10. Salviniaceae 39 



14. WOODWARDIA Sm. 

 (Anchistea Presl) 



W. virginicd (L.) Sm. Chain Fern. In an old tamarack bog 3 miles e. of 

 Antioch, Lake Co., G. D. Fuller & G. N. Jones in 1944. 



15. Cryptogramma R. Br. 



C. stelleri (S. G. Gmel.) Prantl. Rock-brake. On damp, usually calcareous 

 rocks, rare; n. III. 



16. Pellaea Link — Cliff -brake 



1. Stipes and rachises glabrous or nearly so; leaves 5-25 cm. long, pale bluish 

 green; chiefly calcareous rocks, rare P. glabella Mett. 



1. Stipes and rachises with numerous jointed hairs; leaves 10-50 cm. long, 



grayish green; dry, calcareous recks, not common 



P. atropurpurea (L.) Link 



17. Adiantum L. — Maidenhair Fern 

 A. pedatum L. Moist woods, common throughout 111. 



18. Cheilanthes Sw. — Lip Fern 



1. Leaves tomentose, 5-10 cm. long; indusia continuous; among rocks, not 

 common; chiefly in the w. and s. parts of the state; known from Jo 

 Daviess, Carroll, Jersey, Jackson, and Johnson counties C. jeei Moore 



1. Leaves hirsute and glandular, (5-) -10-20 cm. long; indusia discontinuous; on 

 rocks, St. Clair Co. and southw C. lanosa (Michx.) D. C. Eaton 



19. Pteridium Scop. 



P. latiusculum (Desv.) Hieron. Bracken or Brake Fern. Open woods, 

 common. \Pteris aquilina and Pteridium aquilinum of auth., not L.} 



9. Marsileaceae R. Br. 



1. Marsilea L. 



M. quadrifolia L. European Marsilea. Ponds, etc., introd. from e. U.S.; 

 nativie of Europe. In strip-mine ponds near Oakwood, Vermilion Co., G. N. 

 Jones 13052. 



10. Salviniaceae Reichenb. 



1. AzoLLA Lam. 



A. mexicana Presl. Mosquito Fern. Floating on still water, not common; 

 w. and s. 111. [/I. caroliniana of auth., not Willd.} 



