34 



Plowrijjhtia morbosa (Schw.) Sacc— H 163, Vermilion lake. On 

 Primus pennsylvanicus. 



Yalsa nivea Fr.— H 103, Vermilion lake. On Populus tremuloides. 



Valsa Saliclna Fr.— H 77, Vermilion lake. On Salix discolor. (Deter- 

 mined by Ellis.) 



Isolated imperfect form*. 



Raetridiilill ellisii Berk. — H 109, Vermilion lake. On rotten wood. 



CercOSpora leptosperma Pk.— H 152, Vermilion lake. On Aralia 

 nudicaulis. 



Didymaria linger! Cda. {Ramularia didyma Ung.) — H 88, Vermilion 

 lake. On Ranunculus pennsylvanicus. 



Fusariuni berenice (B. & C.) Sacc— H 67, Vermilion lake. On Abies 

 balsamea. 



Gloinerularia corni Pk.— H 2, Vermilion lake. On Cornus canadensis. 



Melaiiconium betuliimm Schm. & Kze.— H 97, Vermilion lake. On 

 Betula papyracea. H 85, Vermilion lake. On Betula pumila. 



Melaiiconium bicolor Xees. — H 95, Vermilion lake. On Betula papy- 

 racea. 



Oidium radiosum Lib.— H 272, Agate bay. On Populus balsaniifera. 



Ramularia tulasuei Sacc. — H 206, Vermilion lake. On Fragaria vir- 

 giniana. 



Ramularia lirticae Ces. — H 164, Vermilion lake. On Urtica gracilis. 



Ramularia variabilis Fckl. — H 9, Duluth. On Verbascum thapsus. 



Ramularia variegata Ellis & Holway (n. sp.) Spots ampbigenous, 

 large, indefinite, }-l cm. in diameter, above reticulately spotted with white or 

 brown, less distinctly so below. Hyphae ampbigenous, but mostly hypophyl- 

 lous, fasciculate, hyaline, single, toothed above, 15-25 by 4 mu. Conidia oblong- 

 cylindrical, hyaline, uniseptate, and often constricted at the septum, 20-35 by 

 3J-4J mu. — H 233, Vermilion lake. On living leaves of Petasites palmata. 



Septoria astragali Desm. — H 60, Vermilion lake. On Lathyrus ochro- 

 leucus. 



Septoria coptidis B. & C. — H 231, Vermilion lake. On Coptis tri- 

 foliata. 



Septoria corylina Pk. — H 207, Vermilion lake. On Corylus rostrata. 



Septoria mimuli E. & K. — H 105, Vermilion lake. On Mimulus 

 ringens. 



Septoria polyg^onorum Desm. — H 153, Vermilion lake. On Poly- 

 gonum cilinode. 



Septoria rubi West., var. pallida E. & H. — H 47, Vermilion lake. 

 On Rubus hispidus. 



StilbuiU tomeiltosum Scbr. — H 114, Vermilion lake. On some myxo- 

 gaster. 



Triehotliecium roseum .(Pers.) Lk.— H 181, St. Louis river. On 

 tamarack. 



Zygodosmus sublilacinus Ellis & Holway (n. sp.). Forms a continu- 

 ous, thin, felt-like stratum of a dirty lilac color on rotton wood (of some 

 deciduous tree) and on birch bark. Margin slightly paler. Main hyphffl 

 coarse, much branched, the tips of the branches enlarged and bearing the 

 coarsely echinulxite, rather irregularly shaped spores, about 7 mu in diameter, 



