52 



Cincitmati Society of Natural History. 



Growing on old leaves of SorgJnnn nutans, Newfield, N. J., 

 Mr. J. B. Ellis. In the old specimen, at this time, the spores 

 at first seemed a mere hyaline sack, but, after soaking awhile, 

 the spiral arrangement became visible. 



(jenus \\ — Troposporium, Harkness. 



Sporodocbium superficial, verruciform, farinaceous: hyplKc 

 long, slender, flexuous, branched, the spores borne at the 



Kijj. 21. Troposporiiiiu album. 



apex of slender branchlets. Spores s])irally coiled into an 

 elongated ellipsoidal body. The spores are like those of 

 Helicot'hi. 



I. Troposporh'.m .m.ium, Hark. Sporodocbium white, 

 verruciform, thick, often confluent; hypha- slender, flexuous, 

 branched, h>aline, the spores borne at the ends of slender 

 branchlets. Spores hyaline, oblong-ellip.soidal, compo.sed of 

 3-7 spires, clo.sely coiled ; sjiore 40-45x18-22 niic; the thread 

 about 7 mic. in thickness, continuous. (Fig. 21.) 



Growing on dead stems of Coryhis rostrata: Calilornia, 

 Harkncss. 



The stroma consists of numerous granules and oil globules, 

 which are set free by breaking. 



