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THE FERN BULLETIN 



Struthiopteris Germanica. Willd. Ostrich 

 Fern. Alluvial woods along streams. Local, but oc- 

 curs throughout. (Matteuccia struthiopteris (L.) To- 

 daro). 



Woodsia Ilvensis (L.) Rusy Woodsia. Cliffs. 

 Very local and mostly confined to eastern half. Lu- 

 zerne, Lycoming, Huntingdon, Bucks, Monroe, North- 

 ampton, Blair, Chester and Pike counties. 



Woodsia obtusa (Spreng). Obtuse Woodsia. 

 Wooded rocky slopes. Common. 



A V oodwa rdi a angustifolia Sin. Narrow-leaved 

 chain Fern. Shaded swamps. Rare in Pennsylvania, 

 though quite common in the pine barren swamps of 

 southern New Jersey. Bucks, Delaware and Monroe 

 counties. (W. areolata (L.) Moore.) 



Woodwardia Virginia (L.) Sm. Common chain 

 Fern. Swamps, open or shaded. Very local. Sus- 

 quehanna, Pike Monroe, Northampton, Bucks, Centre 

 and Delaware counties. 



SELAGINELLACEAE 



Selaginella apus (L.) Creeping Selaginella. 

 Wet meadows and swamps. Abundant in the south- 

 eastern section, common or local elsewhere. 



Selaginella rupestris (L.) Rock Selaginella. 

 On rocks. Scarce. Recorded from Pike, Monroe, 

 Northampton, Bucks, Berks, Chester Lancaster and 

 Philadelphia counties. All in the eastern half. Prob- 

 ably in the west, though I find no record. 



MARSILIACEAE 

 Marsilia quadrifolia (L.) European Marsilia, 

 Pepperwort or Water clover. Credited to Delaware 

 county in Keller and Brown's Flora of Philadelphia 

 and vicinity. Undoubtedly an introduction. 



