126 



lanceolata (L.) ; Paltonium lance o latum (L.) 

 Vittaria Smith. 



200. Vittaria lineata (L.) Grass Fern. Not un- 



common; on the trunks and branches of trees. 

 Southern and central Florida ; also in the West 

 Indies and tropical America. 



Woodsia R. Br. 



201. Woodsia glabella R. Br. Somewhat rare; on 



rocks. New Brunswick, Vermont, New York 

 and British Columbia northward ; also in nor- 

 thern Europe and Asia. 



202. Woodsia hyperborea (R. Br,) Rare; on rocks. 



Maine, Vermont, New York and Ontario to 

 Alaska and Greenland ; also in northern Eu- 

 rope and Asia and in the Himalayas. — Woodsia 



alpina (Bolton.) 



203. Woodsia Ilvensis (L.). Rusty Woodsia 



Common ; on exposed trap rock. North Caro- 

 lina, Kentucky and Iowa to the far north; also 

 in Greenland and northern Europe and the 

 mountains of Asia. 



204. Woodsia Mexicana Fee. Rare; in rocky 



shades. Texas, New Mexico and Arizona ; also 

 in Mexico. 



205. Woodsia obtusa (Spreng.) Common Wood- 



sia. Common or abundant ; on shaded rocks 

 and in woodlands. Georgia, Alabama and 

 Texas to Alaska and Labrador; also in 

 Peru. The form angusta Peck and f. nana 

 Lemmon may be expected with the type. 



206. Woodsia obtusa glandulosa D. C. Eaton. New 



Mexico and Arizona. — Woodsia obtusa Plum- 

 merae Lemmon. 



