264 



Mycologia 



finger is passed over it, very variable in size but averaging in well 

 developed examples nearly .8 X .25 mm. ; capitula black, shining, 

 globose, averaging when dry 270 /x in height and 300 /x in width, 

 swelling when moist to a globe 630 fi in diam. ; stem reddish-black, 

 averaging 540 fx in length and 230 /x in thickness ; conidia Pesta- 

 lozsia-like, 3-septate, 20-26X7-11^, 14-18 /x between the outer 

 septa, curved on one side, the two middle cells brown, often 

 nucleate, upper one larger ; end cells hyaline, lower rostrate, upper 

 terminating in 3 filiform cilia, 25-50X2/*-; on fasciculate acute 

 conidiophores. 



On dead stems of Clematis ligusticifolia Nutt. (13679). 



This interesting form stands on unnamed ground between 

 Stilbum and Pestalozzia. Its association on the same stems with 

 Ceriospora montaniensis E. & E. and the similarity of the spores 

 make it extremely probable that this is the conidial form of the 

 last named species. 



Lyndonville, 

 New York. 



