64 



Didorma Mariae-Wilsoni, Clinton. 



Scattered or crowded, sessile, subglobose, smootli, white or pinkisli-wliite, 

 outer peridium crustaceous, within at the base brownish-pink, inner peridium 

 delicate ; columella subglobose, rugulose, slightly colored ; spores globose, 

 blackish-brown, .0004' in diameter. 



Fallen leaves, sticks, moss, etc. Buffalo, Clinton. Memphis, 

 Center and Sandlake. August and October. 



Didymium connatnm, Peck. 



Peridium depressed or subglobose, cinereous, f urf uraceous, stipitate ; stems 

 mostly connate at the base, tapering upward, longitudinally wrinkled, whitish 

 or cream color; spores subglobose, black, .0004' in diameter. 



Decaying fungi. Portville. September. 



The subfasciculate mode of growth is a marked feature in this 



species. 



Physarum pulclierripes, Peck. 



Peridium globose, variable in color, ochraceous, gray, brown or black ; stem 

 slender, equal or slightly tapering upwards, vermillion ; spores globose, brown, 

 .00033' in diameter. 



Rotten wood. Eichmondville and Worcester. July. 

 The bright color of the stem is quite conspicuous, notwithstand- 

 ing the small size of the plant. 



Physarum caespitosuin, Peck. 



Peridia aggregated in tufts or clusters, crowded, sessile, smooth, brown or 

 blackish-brown; spores dingy ochre, smooth, globose, .00035' in diameter. 



Decaying wood. Greenbush. August. 



Craterium obovatum, Peck. 



Peridium obovate, rugose-wrinkled, glabrous, lilac-brown ; flocci whitish ; 

 stem cotored like the peridium; spores smooth, globose, black, .0005'-.0006' in 

 diameter. 



Decaying Avood and fallen leaves. Center, Sandlake and Croghan. 

 August and September. 



The operculum is not always distinct, the peridium appearing fre- 

 quently to be irregularly ruptured at the apex. 



Stemouitis herbatica, Peck. 



Densely fasciculate; capillitium slender, cylindrical, brown when moist, 

 ferruginous-brown when dry ; stem black, arising from a membranaceous 



