100 



Thirty-eighth Report on the State Museum. 



Cylindrosporium veratr-inum, 3. & W. 



Plate 1, figs. 10-12. 



Living leaves of Indian poke, Verairulfi viride. Adirondack moun- 



tains. Tune. , ^, ^ 



This fungus appears to me to be ambiguous, between the genera Cy- 

 lindrosporium and Ramularia. Distinct, though short hyphae are pres- 

 ent • and the spores are very long and clearly septate, in_ violation of 

 the generic character of Cylindrosporium. The fungus is sometimes 

 either associated with or followed by oblong black spots or patches, 

 which are sometimes confluent, and which bear minute black perithecia 

 containing oblong or cylindrical spore-like bodies about .0002 m. long. 



Ovularia moniloides, K & M. 



Plate 2, figs. 1-4. 



Living leaves and dead branches and aments of sweet gale, Myrica 

 Gale. Adirondack mountains. June. ^ ' a 



A very variable species. Sometimes the spots are few and scattered, 

 again they are numerous, small or large, and often confluent, occupying 

 nearly the whole leaf. Sometimes the fungus extends to the branches, 

 both dead and living, which it surrounds with its white flocculent patches. 



Peronospora Arthuri, Farl. 

 Living leaves of evening primrose, (Enothera biennis. Albany. June. 



Peronospora Halstedii, Farl 

 Living leaves of Ambrosia trifida. North Greenbush. Sept. 

 This often grows upon the spots occupied by Protomyces polysporus. 



Peronospora Potentillae, De By. 



Living leaves of purple avens, Geum rivale. Adirondack mountains. 



June. 



Entyloma Saniculae, n. sp. 



Plate 1, figs. 1-9. 



Spots numerous, small, close or subconfluent, orbicular or subangular. 

 varying in color from whitish or greenish to brown or reddish-brown 

 conidia amphigenous, filiform or linear, straight or curved, colorless, 

 '0012 to .0024 in. long, .00008 to .0001 broad. Sometimes plunnucle- 

 ate ; spores subglobose, .00055 to .00065 in. broad. r^,,,^u„^h 



Living leaves of sanicle, Sanicula Marilandica. North Greenbush. 



^^The very long slender conidia are a distinguishing feature in this 



species. 



Cercospora Violae, Sacc. 



Living leaves of violets, TioZa ^'/awrfrt. Osceola. Aug. 



In ou? specimens the spores are shorter than the d^n^^.^J^^^X^ ^° 

 the type, from which it is probable that they are a variety. They are 

 .003 to .004 in. long, but pluriseptate as in the typical specimens. 



Cercospora Cephalanthi, E. tg K. 



Living leaves of Cephalanthes occidentalis. Karner. Aug. 



