26 Annual Report of the State Botanist. 



Diplosporium breve n. sp. 



Hyphse csspitose, short, sparingly branched, white; spores 

 oblong-, uniseptate, slightly constricted at the septum, colorless, 

 .0005 to .0006 in. long, .0002 to .00025 broad. 



On some effete Sphaeria. Kedfield. July. 



Didymaria Ungeri Gd. 



Living leaves of northern buttercup. Ranunculus septentrionalis. 



Kedfield. July. 



Kamularia destruens n. sp. 



(Plate*, flgs. 4 to 6.) 



Tufts amphigenous, minute, gregarious, white, the hypha3 

 extremely short, .0002 to .0004 in. long; spores elliptical or oblong, 

 colorless, .0002 to .0005 in. long, .00012 to .00015 broad. 



Li"vdng leaves of mountain ash. Pyrus Americana. Hewitt's 

 pond, Adirondack mountains. July. 



This is a very destructive fungus. It quickly discolors and kills 

 the leaves. The discoloration in most cases appears to progress 

 from the apex toward the base of the leaf, which soon assumes a 

 brown and dead appearance as if burned by fire. The effect is 

 somewhat similar to that produced in the foliage of the apple and 

 pear by the " blight." Nearly all the leaves were killed on the tree 

 from which our specimens were taken. 



The fruiting part of the fungus breaks out here and there on the 

 dead leaves, but it is not abundant. The mischief is apparently 

 due to the rapidly spreading mycelium. The species is one of the 

 most minute of the genus, and is easily overlooked, though the 

 effect of its work in the leaves is painfully evident. 



Hamularia Junci n. sp. 



Spots transverse, brown ; hyphse extremely short, caespitose 

 spores very slender, straight or curved, often slightly narrowed 

 toward one end, .001 to .002 in. long. 



Living leaves of Juncus marginatus. Selkirk. June. 



Ramularia graminicola n. sp. 



(Plate4, flgB. 1 to8.) 

 Spots small, numerous, irregular or subelliptical, pallid, sur- 

 rounded by a broad, indeterminate brownish border ; hyphae amphi- 

 genous, short, colorless, .0005 to 001 in. long ; spores subcylindrical, 

 or fusiform, sometimes pointed at each end, sometimes becoming 

 spuriously uniseptate, colorless, .001 to .0014 in. long. 



