PLANTS OF IOWA 37 



Hysterium, Tode. 



395. H. palicare, Pers. 



Common on bark of deciduous trees. 



396. H. spceriaceum, Ell. 

 On decaying wood. 



397. H. prostii, Duby. 



On bark of Pyrus coronaria. 

 Hysterographium, Corda. 

 398 E.fraxini, (Pers.) 



On dead limbs of Fraxinus. 



399. H. cinerascens, Schw. 



On rotten wood of Juglans cinerea. 



400. E. mori, (Schw.) Ellis. 



On decorticated, exposed wood, also on dead limbs still 

 covered with the bark. 

 Hypoderma, DC. 



401. H. commune, (Fries.) 

 On Sambucus canadensis. 



Lophoderium, Chev. 



402. L. juniperinum, (Fries.) 



On dead leaves of Juniperus communis. 



DICH.ENACE.E FAMILY. 

 DlCILENA, Fr. 



403. D. faginea, Pers. 

 On sycamore. 



DISCOMYCETES. 



PHYACIDIACE,SE family. 

 Phacidium. 



404. P. repaudum, Fr. 



On leaves of Portuetilla. 

 Bhytisma. 



405. B. acrenium, Fr. 



On leaves of Soft Maple. 



