Rhode Island Plants. 19 



929. Dactylis glomerata, Linn. Introduced and natural- 

 ized, Rhode Island ! 



930. Elymus Hystrix, Willd. Torr. Fl. p. 138. Asprella 

 Hystrix, Willd. Hook. Fl. Bor. Am. II. p. 256. Woody hill 

 sides, Smithneld ! 



EaUISETACE^. 



931. Equisetum limosidi, Linn. Hook. Fl. Bor. Am. II. p. 

 260. E. uliginosum, Big. Fl. Bor. Am. II. p. 383. Margins 

 of ponds, Rhode Island ! 



LYCOPODIACE^]. 



932. Lycopodium lucidulum, Michx. Big. Fl. Bost. ed. 2, 

 p. 385. Hook. Fl. Bor. Am. II. p. 200. Damp woods, Rhode 

 Island ! 



933. L. dendroideum, Michx. Big. Fl. Bost. ed. 2, p. 385. 

 Hook. Fl. Bor. Am. II. p. 266. Woods, Rhode Island ! 



934. L. annotinum, Linn. Hook. Fl. Bor. Am. II. p. 266. 

 Woods, Rhode Island ! 



935. L. inundatum, Linn. Hook. Fl. Bor. Am. II. p. 266. 

 Wet places, Rhode Island ! 



936. L. rupestre, Linn. Big. Fl. Bost. ed. 2, p. 386. 

 Hook. Fl. Bor. Am. II. p. 267. Rocks, Smithneld and Cum- 

 berland ! 



937. L. clavatum, Linn. Big. Fl. Bost. ed. 2, p. 267. 

 Woods, Rhode Island ! 



938. L. compLanatum, Linn. Big. Fl. Bost. ed. 2, p. 385. 



FILICES. 



939. Physematium obtusum, Hook. Fl. Bor. Am. II. p. 259. 

 Aspidium obtusum, Willd. Woodsia Perriniana, H. fy G. 

 Hypopeltis obtusa. Torr. Rare, and found very sparingly, 

 Smithneld ! 



940. Aspidium Thelypteris, Sw> Hook. Fl. Bor. Am. II. p. 

 260. Borders of woods, Rhode Island ! 



941. A. marginale, Willd. Hook. Fl. Bor. Am. II. p. 260. 

 Damp hill sides, Rhode Island ! 



942. A. spinulosum, Willd. Hook. Fl. Bor. Am. II. p. 261. 

 Damp places, Rhode Island ! 



