conidia 2-several on each basidium, borne on short sterig- 

 mata, hyaline, ovoid-ellipsoid, 3-5x2-3 i^. 



Forming a thick crust on the sporangia and stipes of a 

 slime-mould, bluffs of the Missouri river, Bellevue. 

 (4881) 

 Mycogone roseola Pound and Clements. 



Broadly effused, covering the entire host with a layer 300- 

 -500 // thick, at first white, then rosy, or, rarely, pale 

 brick-red; hyphae hyaline, septate, erect, branched, 3-4 [a 

 wide; conidia borne on short, lateral, often nodding ped- 

 icels, 2-celled, 20x15 //, superior locule larger, densely and 

 beautifully echinulate, globose, pale brick-red, 12-1 5 //, 

 inferior locule almost hyaline, or very pale rosy, minutely 

 and sparingly punctulate, 8-9 //. 



Parasitic on an Helvetia, H. albipes (?), Meadville, Keya 

 Paha county. (4748) 



DEMATIACEAB. 



Helminthosportum phragmidium Pound and Clements. 



Broadly effused, velutinous, at first white, then exactly avel- 

 laneous, 1 cm. wide; sporophore very long, with numer- 

 ous alternately-disposed, lateral branches, multiseptate, 

 hyaline, 160-800x2-|-5 /i; conidia solitary, erect, obclavate, 

 smooth, pale gray, constricted between the septa, 3— 7-sep- 

 tate, 45-70x10-15 //. 

 On fragments of wood in the green-house, Lincoln. (4576) 



Sporodesmium suffultum Pound and Clements. 



Cespitula gregarious, superficial, granular, botryoid, black; 

 sterile hyphae creeping, fuliginous, branched, torulose; 

 sporophore erect, unicellular, broad, turgid, hyaline, equal- 

 ling the conidia in diameter, 25-35x15-20 fi; conidia 

 densely congested, globose, or globose-oblong, rarely ob- 

 long, opaque, brown-fuscous, irregularly and densely poly. 

 gono-areolate, or nearly radiately septate, very rarelv 

 muriform, 25-35x25 //. 



