NO. 1228. NORTH AMERICAN FERNS— MAXON. 087 



Athyrium cyclosorum Kupr. Beitr. Pflanzenk. Russ. Reich. 3 : -il. 1845. 



Athyriniii JiVix-foein'ma var. i-ydosonDii Ledeb. Fl. Koss. 4:519. 1853. 

 Asplenlum fiU.r-focmina var. cyclosorum Enpr. ; D. C. Eaton in U. S, Geog. Surv. 

 W. 100th Merid. 6:331. 1S79. 

 Alaska to California, Arizona, and Nebrai^ka. 



PEYLLITIS Ludwig, Inst. Hist. Phys. Reg-. Veg. ed. 2. 142. 



1757. 



Phyllitis scolopendrium (L.) Ncwm. Hist. Brit. Ferns ed. 2. 10. 1844. 

 Hakt's-tongue. Catp:rpillar ferx. HouniVs-tongue fern. 



Asj^lenium scolopendrium L. Sp. PI. 1079. 1753. 



Scolopendrium vulgare J. E. Smith, Mem. Acad. Roy. Sci. Turin 5 : 421. 1793. 

 Scolopendrium scolopendrium Karst. Deutsch. Fl. ed. 1, 278. 1880-83. 

 Central New York; Tennessee; New Brunswick; Grey and Simcoe counties, 

 Ontario. Also in Alaska (?).* 



CAMPTOSORUS Link. Hort. Berol. 2 : GO. 1833. 



Camptosorus rhizophyllus (L.) Link, Hort. Berok 2:60. 1833. ^YALK- 

 ING LEAF. Walking fern. Wall link. 



AspleniumrhizophyllaJj. Sp. PI. 1078. 1753. 

 Maine and southern Quebec to Minnesota, south tn Georgia, Alabama, and 

 Kansas. 

 Camptosorus rhizophyllus intermedius Artliur, Bot. Gaz. 8 ; 200. pi. 3. 



1883. 



Io\va. 



PHEGOPTERIS Fee, Gen. Fil. 242. 1850-52. 



Phegopteris phegopteris (L.) Underw. ; Small, Bull. Torr. Club 20 : 402. 

 1893. Long beech fern. 



Folypodiiua x>h(()opieris^. Sp. PI. 1089. 1753. 

 Phegopteris polypodioides Fee, Gen. Fil. 243. 1850-52. 

 Newfoundland to Alaska, south to Virginia, Michigan, Iowa {Filzpatrich), and 

 Washington. Also in Greenland. 



Phegopteris hexagonoptera(Michx.) Fee, Gen. Fil. 243. 1850-52. Broad 



BEECH FERN. 



Polypodium hexagonopterum Michx. Fl. Bor. Am. 2 : 271. 1803. 

 New England and Quebec to Minnesota, south to Kansas, Louisiana, and Florida. 



Phegopteris alpestris (Hoppe) Mett. Fil. Hort. Bot. Lips. 83. 1856. Al- 

 pine POLYPODY. 



Polypodium alpeslre Hoppe, Taschenb. 216. 1805. 

 California to Montana and British Columbia. 



Phegopteris dryopteris (L.) Fee, Gen. Fil. 243. 1850-52. Oak fern. 

 Polypodium dryopteris L. Sp. PL 1093. 1753. 

 Newfoundland to Alaska, south to Virginia, Minnesota, Kansas, Colorado, and 

 Oregon. Also in Greenland. 



Phegopteris robertiana (Hoffm.) Underw. Our Native Ferns ed. 0. 109. 

 1900. Limestone polypody. 



Polypodium robertianura Hoffm. Deutsch. Fl. 2 : [Add. 4.]. 1795. 

 * Distribution discussed in Fernwort Papers 30-46. 1900. 



