PLANTS OF IOWA 95 



1171. 0. longatum, Kuetz. 

 In stagnant water. 



COLEOCILETACE.E: FAMILY. 



COLEOTH^TE, Breb. 



1172. C. soluta, Pringsh. 

 Not rare in ponds. 



1173. C. scutata, Breb. 



On aquatic plants, frequent. 



1174. C. orbicularis, Prinsh. 

 In aquarium. 



CHARACTER FAMILY. 

 CHARACIUM, A. Br. 



1175. C. ncegelii, A. Br. 

 Ponds. 



LICHENS. 



USNEEI FAMILY. 



RAMALINA ACH., De Not. 



1176. E. calicaris, (L.) Pr. 

 Trees. 



1177. R. calicaris, (L.) Fr. var. fraxinea, Fr. 

 Trees. 



1178. R. calicaris, (L.) Pr., var. fastigiata Fr. 

 Trees. 



1179. R. calcaris, (L.) Fr., var. farinacea, Schaer. 

 Sandstone. 



CETRARIA, (Ach.) Fr. Mull. 



1180. C. ciliaris, (Ach.) 

 Dead wood. 



EVERNIA, Ach. Mann. 



1181. E. prunastri (L) Ach. 



Red Cedar and on old board fence. 



USNEA (Dill.) Ach 



1182. U. larlata (L.) Fr. 



Trees and sandstone, infrequent. 



