Flora of the Allegany State Park Ret/ion 23 



Thelypteris cristata (L.) Nieuwl., Aspidium cristatum 



Sw., Dryopteris cristata Gray. Crested or 



Swamp Shield Fern 



Tn wet lowland woods, sedgy swamps and bogs. 



Infrequent. Low woods near Quaker Bridge, 



"Balsam swam])" in Red House valley etc. 



Var. Clintoniana (D. C. Eaton) Weatherby. In 

 similar situations and also in moist, less acid soil or 

 damp woodlands. Rare. Woods near Buffalo camp 

 on Quaker run, growing with T. Goldiana. 

 Thelypteris spinulosa (O. F. Mull.) Nieuwl., Aspidium 

 spinulosum Sw., Dryopteris spinulosa Kuntze. 

 Spiny-toothed Shield Fern 

 Tn moist open or shaded forested areas. Infre- 

 quent. Rock City north of Salamanca 



Var. intermedia (Muhl.) Weatherby, Aspidium 

 spinulosum var. intermedium D. C. Eaton, Dryop- 

 teris intermedia Gray. Common Wood Fern 



In fertile or often somewhat sterile soil in moist 

 or damp, often dry woodlands, thickets and on open 

 banks. Very common. 

 Polystichum acrostichoides (Michx.) Schott. Christ- 

 mas Fern 

 In either moist or dry, usually rocky woodlands 

 and banks. Frequent. 

 Dennstaedtia punctilobula (Michx.) Moore. Dicksonia 

 punctilobula of Gray's Man. Hay-scented 

 Fern 

 In sterile, gravelly or sandy soil of cut-over land, 

 open places, thickets and banks, usually in dry but 

 often in damp situations. Common. 

 Athyrium angustifolium (Michx.) Milde, Asplenium 

 angustifolium Michx., Athyrium pyenoearpon 



