172 IOWA ACADEMY OF SCIENCES. 



Phegopteris hexagonoptera Fee. Johnson Co. Woods, fre- 

 quent. 



Aspidium thelypteris Swartz. Johnson Co. Boggy places, 

 locally frequent. 



A. aerostcihoides Swartz. Johnson Co. Rare. 



Cystopteris hulbifera Bernh. Johnson Co. Base of cliffs, 

 common. 



C.fragilis Bernh. Decatur, Appanoose, Van Buren, Des 

 Moines, Shelby, and Johnson Cos. Woods, common. 



Onoclea sensibilis L. Decatur, Appanoose, and Johnson Cos. 

 Moist woods, frequent. 



0. •struthiopteris Hoff. Shelby and Johnson Cos. Woods, 

 common. 



Woodsia obtusia Torr. Decatur, Van Buren, and Johnson 

 Cos. -Cliffs, frequent. 



Osmundia claytonlana L. Decatur and Appanoose Cos. 

 Moist woods, frequent. 



OPHIOGLOSSACEyE. 



Botrychiumvirginianum Swartz. Decatur, Appanoose, Shelby, 

 and Johnson Cos. Rich woods, frequent. 



LYCOPODIACE^. 



Lycopodium davatum L. Johnson Co. Local, rare. 

 L. complanatum L. Johnson Co. Local, rare. 



JUNGERMANNIACE^. 



Lejunia serphyllifolia americana Lindl. Johnson Co. Base of 

 trees, common. 



Porella platyphylla Lindb. Johnson Co. On lime rocks and 

 moist banks, common. 



Cephalo'da multiflora Spruce. Johnson Co. In moist situa- 

 tions, on ground among lichens, infrequent. 



Lophocolea minor Nees. Johnson Co. On moist banks, 

 infrequent. 



PlagiocJdla asplenoides Dumort. Johnson Co. Moist banks, 

 infrequent. 



ANTHOCEROTACE^.. 



Anthoceros Ujivis L. Johnson Co. Moist low grounds, fre- 

 quent. 



