40 



Cinciuuati Society of Natural History. 



lltliconivces olivaceus. 



a. spores Jili form, the thread about i iiiic. thick. 



1. Hklicomvcks olivaceus, Peck. Effused, fonning a 

 thin, flocculose, olivaceous stratum. Fertile hyphse, simple, 



erect, rigid, tapering, sep- 

 tate, black, seated upon 

 a net - work of very fine, 

 delicate, creeping hyaline 

 threads : the spores borne 

 in a spicate manner, on mi- 

 nute pellucid teeth, along 

 the lower half of the 

 thread, leaving the upper 

 part naked. Spores fili- 

 form, hyaline, indistinctly 

 guttulate, usually coiled 

 about three times : the 

 thread 70-90 mic. in length 

 and scarcely i mic. in 

 thickness. (Fig. i.) 

 (jTowing in small patches on old wood of Acer, Lirioden- 



dron, etc. The 



black points of 



the fertile hyphoe 



a])pear above the 



greenish stratum 



of the spores; 



they are 175-250 



mic. in length by 



4-5 mic. in thick- 

 ness. 



2. IIl'.I.ICO.MV- 

 CKS C. K.\CII,IS, 



Morg., n. s]). Kf- 

 fused, forming a 

 thin, flocculose, 

 greenish - yellow 

 stratum. Ilyplue 

 creeping, septate, 

 branched, green- 



ish-hvaline ; the V'\\i- i Uclicoinyccs gracilis. 



