58 Thirty- first Report on the State Museum. 



DlDYMIUM MICROCARPUM Fr. 



D. nigripes Fr. and D. xanthopus Fr. have been united under this name. 

 To an observer of their external characters they appear quite distinct. Both 

 forms occur with us, the former on fallen leaves, the latter on living 

 Sphagnum. 



Chondrioderma testaceum Fr. 



A form of this species, with the outer walls of the sporangium a clear white 

 with no tinge of pink, is quite common. 



Chondrioderma spumarioides Fr. 



Our specimens { Dicier mq far inacewn Pk.) abound in lime granules, and 

 belong to the variety carcerina. 



Stemonitis herbatica Pk. 



Though resembling 8. ferruginea in color, this species is easily distin- 

 guished from it by the comparatively shorter stem, larger meshes of the capil- 

 litium and decidedly larger spores, which frequently attain a diameter of 

 .0004 inch, nearly twice the usual dimensions of the spores of S. ferruginea. 

 There is a small form of 8. ferruginea, which is nearly equal to 8. herbatica 

 in size, but it is true to the characters of its own species, and would not be 

 confounded with 8. herbatica after an examination of its spores. 



Hemiarcyria clavata Pers. 



The threads of the capillitium in our specimens are much larger than is 

 indicated in the description of the species. Their diameter is about equal to 

 the diameter of the spores, and about twice the diameter ascribed in the 

 description. 



Sph^iropsis Malorum Berk. 



This sometimes attacks apples while yet hanging on the tree. 



Pestalozzia Peckii Clinton. 



According to specimens received from Europe, this is not distinct from 

 P. monochceta Desm. 



CONIOTHECIUM TORULOIDEUM B. & C. 



The fungus thus referred in the Twenty-third Report, and more recently 

 regarded at different times as Torula stilbospora Cd. and Trimmatostroma 

 Saiicis Cd., has recently been published as Trimmatostroma Americana Thu- 

 men. We hope it has finally found a permanent resting place under this name. 

 It forms numerous small black dusty dots on dead branches of willows, 

 and stains or crocks the fingers handling it. 



Septonema bicolor Pk. 



Owing to the delay in the issue of the Twenty-eighth Report, this name is 

 antedated by Sporidesmium Peziza C. & F. 



Bactridium flavum Kze. 



The specimens formerly referred to this species fall more properly under 

 the more recent species Bactridium Ellisii Berk. 



Puccinia Menthje Pers. 



On Pycnanthemum incanum. Bethlehem. 





