46 NEW YORK STATE MUSEUM 



the apex, multinucleate and sometimes 1-3-septate, more or less 

 curved or flexuous, rarely curved at the apex, hyaline, 40-120 x 3-5 

 fi, sometimes rising from creeping hyphae, sometimes from minute 

 sclerotioid bodies on the older and darker spots. 

 • Living leaves of Crataegus rivularis Nutt. Morrison, 

 Colorado. August. E. Bartholomew and E. Bethel. 



This is a remarkable aberrant and variable species, and possibly 

 the type of a new genus. The best development is from the younger 

 spots or the margin of the older ones and in these cases its white 

 flocculent masses are plainly visible to the naked eye. In the older 

 spots minute black perithecialike dots scarcely visible to the naked 

 eye appear. Under the microscope minute rather obscure hyphae 

 appear to arise from these and bear smaller and less plentiful spores. 

 Is this a sclerotioid state of this fungus? 



Coryneum sorbi 



Acervuli numerous, discoid, erumpent, orbicular or ellipsoid, .5-1 

 mm broad, black ; spores oblong or oblong-ovoid, triseptate, often 

 irregular, colored, 12-20 x 8-9 fi; sporophores short or obsolete. 



Dead twigs of Sorb us californica Greene. Tulare co., 

 California. August. J. D. Culbertson. Communicated by E. 

 Bartholomew. 



The disklike receptacles are crowded and surround the twigs. 

 The small terminal cell of the spore is often semipellucid. Fre- 

 quently the spore is abruptly contracted in some part of its outline. 

 This gives it an irregular appearance. 



Dermatea mori 



Receptacle orbicular ellipsoid or slightly irregular, 1-2 mm broad, 

 broadly convex or nearly plane, erumpent, surrounded by the 

 remains of the ruptured epidermis but sometimes more elevated, 

 black or brownish black; asci cylindric or subclavate, 60-90 x 20-25 

 jw; spores oblong or subcylindric, crowded or biseriate, continuous, 

 hyaline, 20-30 x 8-10 ix. 



On dead twigs of Russian mulberry, Morus alba tatarica 

 Loud. Concordia, Kansas. April. E. Bartholomew. 



The spores are sometimes slightly narrowed near the middle and 

 then they resemble in outline the sole of a shoe. By the blackish 

 color of the receptacle the species makes an approach toward the 

 genus Cenangium, but the texture is somewhat waxy and indicates 

 a closer relationship to Dermatea, 



