104 Thirty-eighth Report on the State Museum. 



Diaporthe cylindrospora, n. sp. 



Pustules valsoid, somewhat prominent, erumpent, scattered ; perithecia 

 numerous, fifteen* to thirty or more, crowded, covered by the thin 

 blackened surface of the inner bark, the ostiola rather long, crowded, 

 exserted, about equalling the surrounding elevated epidermis, black; asci 

 narrow, subfusiform, .0018 to .0022 in. long, .00025 to .0003 broad ; 

 pores subcylindrical, crowded or biseriate, quadrinucleate, colorless, 

 .0005 to .00065 m * l° n g> .00012 to .00016 broad. 



Dead branches of wild bird cherry, Prunus Pemisylvanica. Adiron- 

 dack mountains. June. 



I have not been able to detect any distinctly septate spores, yet in 

 every other respect this fungus evidently belongs to this genus, and I 

 have thought best to refer it here for the present. 



Didymosphaeria Typhae, n. sp. 



Perithecia minute, punctiform, subglobose, covered by the epidermis, 

 which is pierced by the scarcely papillate ostiolum ; asci cylindrical, 

 .0025 to .0035 in. long, .0003 to .0004 broad ; spores oblong or ellipti- 

 cal, uniseriate, uniseptate, not at all or but slightly constricted at the 

 septum, colored, .0004 to .0006 in. long, .0002 to .00025 broad ; para- 

 physes filiform. 



Base of dead leaves of Typha latifolia. Guilderland, Albany county. 

 May. 



Sphaerella conigena, n. sp. 



Perithecia small, scattered or gregarious, slightly prominent, erum- 

 pent, black ; asci subcylindrical, .0025 to .0035 in. long, about .0005 

 broad ; spores crowded, oblong-clavate, constricted at the septum, 

 .0004 to .0005 in. long, .00016 to .0002 broad, the cells unequal, the 

 lower one tapering downward, narrower than the subglobose or ellipti- 

 cal upper one. 



Fallen cones of hemlock, Abies Canadensis. Helderberg mountains. 

 May. 



It differs from S. Pinsapo in its longer asci, and longer and differ- 

 ently shaped spores, as well as in its habitat. A similar, if not the same, 

 species occurs on cones of Thuja occidentalis in the same locality, but 

 owing to the immaturity of the fruit it is still in doubt. 



Venturia Cassandrae, n. sp. 



Plate 3, figs. 11-14. 



Spots reddish-brown or brownish, sometimes with a grayish center ; 

 perithecia on one or both surfaces, minute, .0028 to .0032 in. broad, 

 black, with a few short, straight, diverging black setae above, .0012 to 

 .0016 in. long ; asci oblong, gradually and slightly narrowed above, 

 .0016 to .0018 in. long, .0003 to .0004 broad ; spores biseriate, oblong, 

 quadrinucleate, .0005 in. long, .0002 broad. 



Living leaves of Cassandra calyculata. Caroga. July. 



The perithecia sometimes occur on the upper surface of the leaf, but 

 oftener on the lower. They are so small that they are scarcely visible 

 to the naked eye. Sometimes they emerge from beneath the scales of 

 the leaf, and then they appear erumpent, although in reality they are 

 superficial. 



