254 ON WOODSIA. 



Acrostichum ilvense. Linn. Sp. PL ed. 2, p. 1528. 

 Nephrodium lanosam. Michauw, Amer. 2, p. 198. 

 Habitat in rupibus Europoe et America borealis. (v. v.) 



%. 



2. hyper borea. W. frondibns pinnatis, pinnis triangu- 

 laribus oblongisve inciso-pinnatifidis : lobis integerrimis 

 paucifloris : antico baseos productiore. Tab. 38 (XI). 



Poly podium hyperboreum. Swart z, Synop. FiL 39. 

 Willden. Sp. PL &,p. 197. Eng. BoL 2023. 



Polypodium arvonicum. Smith, Fl. Brit. 3, p. 1115.* 



Polypodium ilvense. Withering, Arrang. ed. 3, t. 3, 

 p. 774. 



Acrostichum hyperboreum. Liljeblad in Act. Stock- 

 holm. 1793,/?. 201, t. 8*. 



Acrostichum alpinum. Bolton, Ml. Brit. 76, t. 42. 



Ceterach alpinum. Lamarck et Decandolle, FL Fran. 2, 

 p. 567. 



Habitat in Europse alpibus (v. v.) it. 



