^ 'MB 



^ . \ .7 „ 





Portion of mature Frond — upper side. 



ASPIDIUM RIGIDUM. 



SWARTZ. SCHKUHR. HoOKER AND ArNOTT. WILLDENOW. 



Sprengel. 



PLATE XXI. VOL. VI. 



Aspidium fragrans, 

 " pallidum, 

 " nevadense, 



" BootJiii, 



" argutum, 



Polypodium rigidum, 

 " fragraifis, 



" Heliopteris, 



Lastrea rigida, 



it a 



NepJirodium pallidum, 

 Polystichum rigidum,, 



" strigosum, 



Dryopteris rigida, 

 LopJiodium rigidum. 



Geay, {not of SWAETZ.) 



Link. 



boissiee. 



tuckeeman. 



Kaulfuss. 



Hoffmann. 



ViLLAES, {not ofJjnSTSMTJS OV HuDSON.) 



boekhausen. 



Peesl. Baeington. Soweebt. 



JN"ewman. Mooee. Deakin. 



BOET. 



De Candolle. 



EOTH. 



Geay. 



Newman. 



Aspidium — The Shield Fern. 



Rigidum — Higid . 



In the Section Lastrea of Authors. 



The Rigid Shield Fern^ or^ as Mr. Moore has now called it, 

 the "Rigid Buckler Fern," is a pretty hardy, deciduous British 



