10 



Filix 



(Cystopteris] 



41 bulbifera (L.) Underw. 



42 fragilis (L.) Underw. 



43 mon tana (Lam.) Underw. 



Matteuccia 



(Onodea in part) 



44 Struthiopteris (L.) Todaro 

 (Onodea Struthiopteris (L,.) Hoffm.) 



Oiioclea 



45 sensibilis L. 



Dryopteris 



(Aspidium in part) 



46 Boottii (Tuckerman) Underw. 



47 contermina strigosa (Fee) 



Underw. 



48 cristata (L.) A. Gray 



49 Clintoniana (D. C. Eaton) 



Underw. 



50 Filix-mas (L.) Schott 



51 Floridana (Hook.) Knntze. 



52 fragrans (L.) Schott 



53 Goldieana (Hook.) A. Gray 



54 celsa Palmer 



55 marginal is (L.) A. Gray 



56 montana (Vogel) Kuntze 



57 Nevadensis (D. C. Eaton) 



Underw. 



58 Noveboracensis (L.) A. Gray 



59 patens (Sw.) Kuntze 



60 patula (Sw.) Underw. 



6 1 rigida arguta (Kaulf.) Underw. 



62 simulata Davenport 



63 spinulosa (L.) Kuntze 



64 dilatata (Hoffm.) Underw. 



65 intermedia (Muhl.) Underw. 



66 Thelypteris (L.) A. Gray 



67 unita glabra (Mett.) Underw. 



Phegopteris 



68 alpestris (Hoppe) Mett. 



69 Dryopteris (L.) Fee 



70 hexagonoptera (Miclix.) Fee 



71 Phegopteris (L.) Underw. 



(P. polypodioides Fee) 



72 reptans (Sw.) D. C. Eaton 



73 Robertiana (Hoffm.) Underw. 



74 tetragona (Sw.) Fee 



Tectaria 



(Aspidium in part) 



75 trifoliata (L.) Cav. 

 Polystichum 



(Aspidium in part) 



76 acrostichoides (Michx.) Schott 



77 aculeatum (L,.) Roth 



78 Braunii (Spenner) Lawson 



79 Californicum (D. C. Eaton) 



Underw. 



80 Lemmoni Underw. 



8 1 Lonchitis (L.) Roth 



82 munitum (Kaulf.) Underw. 



83 imbricans (D. C. Eaton) 



Maxon 



84 inciso-serratum 



(D. C. Eaton) Underw. 



85 scopulinum (D. C. Eaton) 



Maxon 



Phaiierophlebia 

 (Aspidium in part) 



86 aurictilata Underw. 

 (Aspidium jug landifolium H. B. K.) 



Nephrolepis 



87 acuta (Sw.) Presl 



88 exaltata (L.) Schott 



Deimstaecltia 



89 punctilobula (Michx.) Moore 

 (Dicksonia pilosiuscula Willd.) 



90 cristata Maxon 



[The genus Dicksonia was estab- 

 lished upon a South American tree 

 fern, to which our plant is not at all 

 referable. ] 



Phyllitis 



(Scolopendriuni) 



91 Scolopendriuni (L.) Newman 

 (Scolopendriuni vulgare Smith) 



Camptosorus 



92 rhizophyllus (L.) Link 



