NOMENCLATURE. 
15 
Tribe 10. Aspidies. 
Aspidium Lonchitis, Swartz 
(Polysticlium Lonchitis, Roth). 
,, aculeatum, Swartz 
(Polysticlium aculeatum, Roth). 
, , angulare, Kitaibcl 
(Polysticlium angulare, Presl , and included 
in aculeatum, Swartz). 
Nephrodium Thelypteris, Desvaux 
(Lastrea Thelypteris, Bory). 
,, montanum, Baker 
(Lastrea montana, Moore, and L. Oreopteris, 
Bory). 
,, Filix mas, Richard 
(Lastrea Filix-mas, Presl). 
,, paleaceum, Don 
(Lastrea Filix-mas, Presl , and Aspidium 
paleaceum, Donovan). 
,, propinquum, Lowe 
(Lastrea Filix-mas, Presl, and L. propinqua, 
Wollastoti). 
„ cristatum, Michaux 
(Lastrea cristata, Presl). 
,, rigidum, Desvaux 
(Lastrea rigida, Presl). 
,, spinulosum, Desvaux 
(Lastrea dilatata, Presl). 
Tribe 11. Polypodies. 
Polypodium Phegopteris, Linnaeus. 
,, Dryopteris, Linnceus. 
,, Robertianum, Hoffmann 
(P. calcareum, Smith and P. Dryopteris, 
var. Bolton). 
,, alpestre, Hofipe. 
,, vulgare, Linnceus. 
Tribe 12. Grammitides. 
Gymnogramme leptophylla, Desvaux. 
SUB-ORDER III. OSMUND ACEyE. 
Osmunda regalis, Linnceus. 
SUB-ORDER VI. OPHIOGLOSSACE^E. 
Ophioglossum lusitanicum, Linnceus. 
,, vulgatum, Linnceus, 
Botrychium Lunaria, Swartz. 
