AN ENUMERATION OF CULTIVATED FEUNS. 157 



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



dium elongatum, Sw. ; Hook, et Oreo. Ic. Fil. t. 234.— 

 Madeira. 



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



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

 opaca, Hooh. — China, Japan. 



38. L. Napoleonis, J. Sm. Aspidium Napoleonis, Bor\ 



Hook. Sp. Fil. 4, *. 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. Goldlana, Presl. Nephrodium Goldianum, Hook, et 



Grev. Io, Fil. t. 102.— North America. 



41. L. erythro T °~. Nephrodium erythrosorum, 



Fat; I 6, t. 258.— Japan. 



42. L. Mexicai Tephrodium Mexicanum, Presl. 



Aspidium Mexicanum, Kimze.— Mexico. 



fff Fronds tripinnate, 6-10 feet long; stipes thick, 

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

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

 ments entire or pinnatifidl/y 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. 



ff ff Fronds lanceolate or deltoid, bi-tripinnate, general!; 

 fragile, crenate, dentate, or unequally 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. 



