AN ENUMERATION OP CULTIVATED FERNS. 157 



36. L. elongata, Presl. Polypodium elongatum, Ait. Aspi- 



dium elongatum, Sw. ; Hook, dl Grev. Ic. Fil t. 234. 

 Madeira. 



37. L. varia; Moore. Polypodium varium, Linn. Aspidium 



varium, Sw.; Hook. Sp. Fil. 4, t. 226. Lastrea 

 opaca, Hook. China, Japan. 



38. L. USTapoleonis, J". 8m. Aspidium Napoleonis, Bory, 



Hook. 8p. Fil 4, t. 255. St. Helena. 



39. L. marginalis, Presl. Polypodium marginale, Linn. 



Lowe's Ferns, 6, t. 26. Aspidium marginalis, Sw. 

 Schk. Fil. t. 45 B ; Lowe's Ferns, 6, t. 6. North 

 America. 



40. L. Goldiana, Presl. Nephrodium Goldianum, Hook, et 



Grev. Ic. Fil t. 102. North America. 



41. L. erythrosora, /. Sm. Nephrodium erythrosorum, 



' Eat; Hook. Sp.Fil 6, 2.253. Japan. 



42. L. Mextcana, Lieb. Nephrodium Mexicanum, Presl 



Aspidium Mexicanum, Kunze. Mexico. 



fff Fronds tripinnate, 610 feet long; stipes thick, 

 paleaceous ; pinnce 2-2 feet long, more or less villose ; pinnules 

 4-8 inches long, lanceolate-acuminate, deeply pinnatijid ; seg- 

 ments entire or pinnatifidly lobed ; ultimate lobes unisorous. 

 Indusium almost peltate. (Megopteris.) 



43. L. villosa, Presl Polypodium villosum, Sw. (Plum. Fily 



t. 27). Aspidium villosum, Sw.; Schk. Fil t. 46. 

 Nephrodium (Lastrea) villosum, Hook. Sp. Fil 

 t, 264. West Indies. 



fttf Fronds lanceolate or deltoid, bi-tripinnate, generall; 

 fragile, crenate, dentate, or unegually laciniated, often spinulose 

 Veins forked. (Lophodium.) 



44. L. dilatata, Presl ; Lindl and Moore's Brit. Ferns, t. 22 ; 



Sowerby's Ferns, t. 13. Aspidium dilatatum, Sm.; 

 Eng. Bot. t. 1461. Nephrodium spinulosum, var. 

 dilatatum, Hook. Brit. Ferns, t. 19. 



