Fig. 171.— Portion of matnre Frond— upper side. 



LASTREA RIGIDA. 



Presl. 



The Rigid Buckler Fern. 



PLATE XXII. 



Lastrea rigida, 

 (( « 



Aspidium rigidam. 



" pallidum, 

 " argutum, 

 " fragrans, 

 " nevadense, 

 Lophodium rigidum, 

 Folystichum rigidum, 



" strigosum, 



Nephrodium rigidum, 

 Polifpodium rigidum, 

 " odoratum, 



" fragrans, 



" Villarsii, 



" heliopteris. 



Pbksl. Dkakin. Moore. 

 Babington. Hewmait. Sowkbby. 



SwABTZ. SCHKUHB, BeNTHAM. 

 HOOKEB AND AbNOTT. SpEENGBL. 

 "WiLLDENOW. FbIES. TeNOEE. 



Stxjbm. Mettenius. Fee. 

 E. J. Lowe. 

 LiKK. Fee. 



KArLFUSS. 



GbaY. {Not of SWABTZ.) 



BoiSSIEB. 



Xewmax. 



De Candolle. Koch. Ledhboub. 



Both. 



Desyaux. 



Hoffman. 



PoiBET. 



YlLLAKS. (Not of LiNNiEUS 



nor Httdson.) 

 Bellaedi. 

 bobkhausen. 



