Repori of the Botanist. 79 



Myrothecium Fungicola n sp. 



Keceptacle small, white-margined, the disk black or greenish- 

 black ; spores oblong, about .0002 in. long. 

 Decaying fungi. North Greenbush. 



Helicoma Mulleri Cd. 



Dead bark of poplar branches. North Greenbush. October. 

 The flocci vary somewhat from those of the European plant. 



Aspergillus glaucus Lk. 



Vegetable substances in damp places. Albany. 



Aspergillus fuliginosus Pech. 



Creeping flocci white, septate, fertile flocci erect, not septate, 

 crowned with a globose head which is rough with projecting pro- 

 cesses ; spores globose, sooty black, smooth, .00016 in.. in diameter. 



Rice paste and other vegetable substances. Albany. 

 Spores were taken from the paste and planted on apple, on 

 which a new crop was raised. 



Polyactis fascicularis Cd. 



Dead stems of Polygonum. Greenbush. May. 



Perenospora parasitica Pers. 



Leaves of Cardamine rhoinhoidea. Bufi'alo. Clinton. 



OlDIUM MEGALOSPORUM B. <JC C. 



Rotten wood. Buffalo. Clinton. 



This species is remarkable for its very large globose spores. 



OlDIUM FULVUM Lk. 



Rotten wood. Buffalo. Clinton. Savannah. August. 



FusispoRiuM RosEOLUM Stejjh. 



Decaying potatoes. Sandlake. June. 



PiLAORE FAGINEA Fv. 



Old stumps and logs of beech. Maryland. July. 



MUCOR IN^QUALIS n. sp. 



Fertile flocci simple or once or twice divided, white ; sporangia 

 globose, at flrst \vhite, then bluish-black or brownish-black ; spores 

 somewhat angular, subglubose, very unequal in size, .0002-.0005 

 in. in diameter. 



Decaying squashes. Albany. October. 



