PLANTS OF IOWA 103 



PERTUSARIA, DC. 



1296. P. velata, (Turn.) Nyl. 

 Trees. 



1297. P. multipuncta, (Turn.) Nyl. 

 Trees. 



1298. P. ambigens, (Nyl.) Tuck. 

 Trees. 



1299. P. communis, DC. 

 Trees. 



1300. P. leioplaca, (Ach.) Schaer. 

 Trees. 



1301. P. pustulata, (Ach.) Nyl. 

 Trees. 



CONOTREMA, Tuck. 



1302. C. urceolatum, (Ach.) Tuck. 

 On trees, rare. 



GYALECTA, (Ach.) Anz. 



1303. G. lutea, (Dicks.) Tuck. 

 Trees. 



URCEOLARIA. 



1304. U. scruposa, (L.) Nyl. 

 Sandstone. 



1305. U. scruposa, (L.) Nyl., var. gypsacea, Nyl. 

 Calcareous earth. 



1306. U. actinostoma, Pers. 

 Granitic rocks. 



CLADONIEI FAMILY. 



CLADONIA, Hoffm. 



1307. 0. symphycarpa, Fr. 

 Earth. 



1308. C. symphycarpa, Fr., var. epiphylla, (Ach.) Nyl. 

 Earth. 



1309. C. mitrula, Tuck. 

 Earth. 



