Fig. 156. — Pinna of mature Frond — tinder side. 



POLYSTICHIIM ACULEATUM. 



Roth. 



The Common PricMy Shield Fern. 



PLATB XX. 



Polystichum aculeatum. 



lohatum, 



affine, 



aculeatum, var. lohatum, 



Both. Babington. Deakin. 

 Newman. Soweeby. Pbesl. 

 Fee. Schott. Mooee. Line. 

 Pbesl. Link, Fee. Hookek. 

 J. Smith. Soweeby. 

 Pbesl. 



Deakin. Mooee. 

 " " " Babisgton. Fee. 



" " var. lonchitidoides, Deakin. 



" " var. ai'gutum, Mooee. 



" Plukenetii, De Candolle. Steudel. 



Aspidium aculeatum, Swaetz. Hookeb and Abnott. 



" " Smith. Bentham. Spbengel. 



" " WiLLDENow. Koch. Tenobe. 



" " Ledeboub. Stubm. Nyhan. 



" " Spennee. Schkuhe. 



E. J. Lowe. ' 



" lohatum, Schkxjhe. Kunze. Swaetz. 



" Smith. Hookeb and Abnott. 



" " Mackay. "Willdenow. 



Tenobe. 



2 D 



