Catalogue. 



OPHIOGLOSSACEAE 



Botrychium 



1 biternatum (Ivam.) Underw. 



2 boreale (Fries) Milde 



3 Coulteri Underw. 



4 dissectum Spreng. 



5 lanceolatum (S.G.Gmel.) Angst. 



6 Ivunaria (L,.) Sw. 



7 matricariae (Schrank) Spreng. 



8 neglectum Wood 



(B. matricariaefolium A. Br.) 



9 obliquum Muhl. 



10 intermedium (D. C. Eaton) 



Underw. 



11 occidentale Underw. 



12 pumicola Coville 



13 silaifolium Presl 



14 simplex E. Hitchcock 



15 tenebrosum A. A. Eaton 



16 Virginianum (L,.) Sw. 



[The Asiatic B. ternatum, found- 

 ed upon a specimen from Japan, is 

 omitted, as it does not occur in 

 America. ] 



Ophioglossuin 



17 Alaskanum E. G. Britton 



18 arenarium E. G. Britton 



19 Californicum Prantl 



20 crotalophoroides Walt. 



21 Engelmanni Prantl 



22 pusillum Nutt. 



23 vulgatum L. 



Cheiroglossa 



24 palmata (L,.) Presl 

 [Ophioglossum palniatum L.) 



OSMUNDACEAE 

 Osmuiida 



25 cinnamomea L. 



26 Claytoniana L- 



27 regalis Iv. 



HYMEIVOPHYLLACEAE 



Trichomanes 



28 Petersii K. Gray 



29 radicans Sw. 



SCHIZAEACEAE 

 Ornithopteris 



{Aneimia) 



30 adiantifolia (L.) Bernh. 



31 Mexicana (Klotzsch.) Underw. 



Lygodium 



32 palmatum (Bernh.) Sw. 



Schizaea 



33 pusilla Pursh 



POLYPODIACEAE 



Woodsia 



34 alpina (Bolton) S. F. Gray 



35 glabella R. Br. 



36 Ilvensis (L.) R. Br. 

 Tjj Mexicana Fee 



38 obtusa (Spreng.) Torr. 



39 Oregana D. C. Eaton 



40 scopulina D. C. Eaton 



