NOMENCLATURE. 
15 
Tribe 10. Aspidies, 
Aspidium Lonchitis, Swartz 
(Polystichum Lonchitis, Roth). 
,, aculeatum, Swartz 
(Polystichum aculeatum, Roth). 
, , angulare, Kitaibel 
(Polystichum 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, 
Wollaston). 
,, cristatum, Michaux 
(Lastrea cristata, Presl). 
,, rigidum, Desvaux 
(Lastrea rigida, Presl). 
,, spinulosum, Desvaux 
(Lastrea dilatata, Presl). 
Tribe n. Polypodies. 
Polypodium Phegopteris, Linnems. 
,, Diyopteris, Linnems. 
,, Robertianum, Hoffmann 
(P. calcareum, Smith and P. Dryopteris, 
var. Bolton). 
, , alpestre, Hoppe. 
,, vulgare, Linnems. 
Tribe 12. Grammitides. 
Gymnogramme leptophylla, Desvaux. 
SUB-ORDER III. OSMUNDACE^E. 
Osmunda regalis, Linneeus. 
SUB-ORDER VI. OPHIOGLOSSACE/E. 
Ophioglossum lusitanicum, Linneeus. 
,, vulgatum, Linneeus. 
Botrychium Lunaria, Szvartz. 
