lO 



Filix 



{Cystopteris) 



41 bulbifera (L.) Underw. 



42 fragilis (L.) Underw. 



43 montana (I^am.) Underw. 



Matteuccia 



{Ottoclea in part) 



44 Stnithiopteris (L.) Todaro 

 {pnoclea Struthiopteris (I^.) Hoffm.) 



Onoclea 



45 sensibilis L. 



Dryopteris 



{Aspidium in part) 



46 Boottii (Tuckerman) Underw. 



47 contermina strigosa (Fee) 



Underw. 



48 cristata (I^.) A. Gray 



49 Clintoniana (D. C. Eaton) 



Underw. 



50 Filix-mas (L.) Schott 



51 Floridana (Hook.) Kuntze. 



52 fragrans (L.) Schott 



53 Goldieana (Hook.) A. Gray 



54 celsa Palmer , 



55 marginalis (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. 



61 rigida arguta (Kaulf.) Underw. 



62 simulata Davenport 



63 spinulosa (L.) Kuntze 



64 dilatata (Hoffm.) Underw. 



65 intermedia (Muhl.) Underw. 



66 Tbelypteris (L.) A. Gray 



67 unita glabra (Mett.) Underw. 



Phegopteris 



68 alpestris (Hoppe) Mett. 



69 Dryopteris (L.) Fee 



70 liexagonoptera (Michx.) Fee 



71 Phegopteris (L.) Underw. 



{P. polypodioides Fee) 



72 reptans (Sw.) D. C. Eaton 

 ■]-i, Robertiana (Hoffm.) Underw. 



74 tetragona (Sw.) Fee 



Tectaria 



(^Aspidium. in part) 



75 trifoliata (I^.) Cav. 

 Polystichiim 



{Aspidium in part) 



76 acrostichoides (Michx.) Schott 

 ^^ aculeatum (L,.) Roth 



78 Braunii (Spenner) Lawson 



79 Californicum (D. C. Eaton) 



Underw. 



80 Lemmoni Underw. 



81 Ivonchitis (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 

 Phanerophlebia 

 {Aspidium in part) 



86 auriculata Underw. 

 {Aspidium. Jug landi/o Hum H. B. K.) 



Ifephrolepis 



87 acuta (Sw.) Presl 



88 exaltata (I^.) Schott 



Dennstaedtia 



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 



{Scolopendriiim) 



91 Scolopendrium (L.) Newman 

 {Scolopendrium vulgare Smith) 



Caniptosorus 



92 rhizophyllus (L.) I^ink 



