400 GEOLOGY OF OHIO. 



DicTydium longipes Morgan. 



Granville, W. G. Tight, H. L. Jones. 



16. CRIBRARIA Pers. 



Cribraria argillacea Pers. 



On rotten trunks, Miami Valley, A. P. Morgan ( Myx.) 



Cribraria ctjprea Morgan. 



On old wood, Miami Valley, A. P. Morgan ( Myx.) 



Cribraria dicdydioides C. & B. 



Granville, W. G. Tight, H. L. Jones. 



Cribraria elegans B. & C. 



On old wood, Miami Valley, A. P. Morgan (Myx.) 



Cribraria TEnella Schrad. 



Granville, W. G. Tight, H. L. Jones. 



Cribraria vulgaris Schrad. 



On old wood, Miami Valley, A. P. Morgan (Myx.) 



17. RETICULARIA Bull. 



Reticuearia atra A. & S. 



On wood and bark, especially pine, Miami Valley, A. P. Morgan (Mj t x.) 



Reticularia splEndens Morgan. 



On old wood, Miami Valley, A. P. Morgan (Myx.) 



Reticularia umbrina Fr. 



Granville, W. G. Tight, H. L. Jones. 



18. PERICHAENA Fr. 



Perichaena depressa Lib. 



On inside of bark of Juglans Acer, etc., Miami Valley, A. P. Morgan (Myx.) 



Perichaena marginata Schw. 



Outer surface of bark of Acer, Fagus, etc., Miami Valley, A. P. Morgan ( MyxJ 



Perichaena irregularis B. & C. 



On outer bark of Acer, etc., Miami Valley, A. P. Morgan (Myx.) 



19. OPIOTHECA Currey {Cornuvia Rostf.) 



Opiotheca chrysosperma Currey ( Cornuvia circumscissa Rostf.) 



On inner surface of old bark of Ouercus, etc., Miami Valley, A. P. Morgan (Myx.) 



Opiotheca pallida B. & C. 



On dead stems of herbaceous plants, Miami Valley, A. P. Morgan (Myx.) 



