8 4. Aspidiiim. 1. FILICES. Pl.end.cr. 



5. Aspidium lolatum. Ijohed shieldfern. 



Frond bipinnate ; leaflets obtuse, ovate, mucronated ser- 

 rate, those next the mauirib much larger, eared, the tips 

 bristled ; stipes and mamnb chafFy. 



Filix mas q. F. aculeata major, &c. Rail Syn. 121,3. 

 F. aculeata, lonchiiidis aemula Piuk. Rail Syn. 121,4. 

 Polypodium lobatum, Ilud. Fl. An. 459. 

 Aspidium lobatum, Swartz Schr. Jour,2,Sl. 

 Closeleaved shieldfern. 



Shady lanes ; peren. June. 



Very like the preceding, but paler and more shining; 

 frond narrower, curled, and apparently convex ; leaflets 

 more elliptic, less cut, 15 or 16 pair in each pinna, and 

 those next the mainrib so large as to extend over the 

 leaflets of the next pinna ; pinncB 35 or more pairs in each 

 leaf. 



|3. ramosum. End of the frond divided into 2 or 3 curled 

 segments. 



6. Aspidium dilatatum. Dilated shieldfern. 

 Frond bipinnate; leaflets oblong, distinct, pinnatifid; 



lohes mucronato-serrate ; stipes chaffy ; involucra smooth. 



Filix fcemina q. F. mas ramosa, pinnulis dentatis, Ger, em. 1129; Rati 

 Syn. 124,2. 



Polypodium cristatum, Iluds. Fl. Ang. 457. 

 P. dilatatum, Hoffm. Germ. 2. 7. 

 Polysticiuim muUiflorum, Roth Germ. 3, 87. 

 Crested polypody. 



Moist shady places ; peren. June, July. 

 Root tuberous, scarcely creeping ; frond 2 feet high, light 

 green ; sori numerous, very distinct. 



i3. Major. Triply pinnate, 3 or 4 feet high. 



y. Minor. Only the first pair of pinnae triply divided. 

 Polypodium rhaeticum, Hudson Fl, Ang. 458? 



7. Aspidium cristatum. Crested shieldfern. 

 Frond pinnate; pz/zw<^ subcordate, ovate, oblong, pinna- 

 tifid; leaflets oblong, obtuse, dentato-serrate ; stipes chaffy. 



Polypodium cristatum, Lin. S. P. 1551, 

 P. Callipteris, Hoffm. Germ. 252 ; 

 Asi)idium cristatum, Swarlz Syn. Fil. 52. 

 Polystichum cristatum, Roth Germ. 3.84, 



Boggy heaths ; peren. June. July. 



Root caespitose; frond 1-2 feet high; sori black; invo- 

 lucra snow white. 



