658 CRYPTOGAMIA SCHISMATOPTEKIDES. OstnUnda. 



O. basilaris, Sprengel. aul.3. p. iGO. 



Icon. Schkuhrjilic. t. 144. 



In low and swampy grounds : Canada to Virginia, and in 



the western territories, % . June, July. v. v. This 



singular fern is about two feet high. 

 spectalilis. 4. O. frondibus bipinnatis, pinnulis oblongis obtusiusculis 



argute serrulatis basi truncatis insequalibus, omnibus 



alternis, panicula bipinnata fructificante in apice fron- 



(\\s.— lFilld. sp. pi. 5. p. 08. 

 O. regalis |3. Sp. pi. 1521. Mich. Ji. amer. 2. p. 273. 

 Icon. Pluk. aim. t. 184./. 4. 

 In mountain swamps : Canada to Carolina. 1/ . July. 



V. V. A very elegant species. 



iV. FIL ICES. 



721. ACROSTICHUM. Gen. pi. 1625. 



aureum. !• A, frondibus pinnatis, pinnis alternis oblongo-lanceola- 



tis integerrimis, basi cuneatis aequalibus, omnibus 

 acuminatis, superioribus fructificantibus. Willd. sp. 

 pi. 5. p. 116. 



Icon. Schkuhrjilic. t. I. Peliv. Jll. t. 6. f. 5. Plum, 

 amer. t. y. Pluk. aim. t. 288./. 2. 



In deep swamps near the sea-coast : Florida. 7/ . July, 

 V. V. This is the largest of the North American ferns, 

 the leaves being sometimes above five feet long. 



722. POLYPODIUM. Swartz.synop.Jilic.3. 



vulgare. 1 . P. frondibus profunde pinnatifidis, laciniis lineari-lan- 



ceolatis obtusis crenulatis approximatis, superioribus 

 sensim minoribus, soris solitariis, caudice paleaceo. 

 IV Hid. sp. pi. 5. p. 172. 



Icon. Schkuhrjilic. t. 11. Plum.Jil. t. J.J. 2. 



On rocks and old rotten trees : Canada to Carolina. % . 

 July. V. V. 

 virginianum. 2. P. frondibus profunde pinnatifidis, laciniis lanceolatis 

 obtusis integerrimis approximatis, superioribus sensim 

 minoribus, soris solitariis, caudice nudo. IVilld. sp. 

 pi. 5. p. 174. 



Icon. Petiv. Jilic. t. 7. /, 9. Pium. amer. t. 36. Jilie. 



