214 MYXOMYCKTES. 



S. ferruginea. Rusty Stemonitis. 



Sporangia, cylindrical, peridium fugacious, exposing 

 the capillitium, of a rusty brown color. 

 Not as common as the S. fuscus. 



Genus X. TRICHIA. 



Sporangia without columella. Capillitium present, threads 

 simple, spiral, turning to the right. 



There are quite a number of species included under this most 

 interesting genus, but there were only a few of which I was 

 able to determine the proper specific name. 



T. clavata. 



Sporangia, obovate, yellow, shining, even, stipitate, stem 

 yellow, peridium dehiscing irregularly. Spores ochraceous. 

 Capillitium consists of an intermingling of threads, so as to be 

 impossible to trace a single thread to its end. 



Common on rotten stumps. 



T. chrysosperma. D. C. 



Sporangia, rounded, subsessile, yellowish. Capillitium 

 and spores ochraceous yellow. Threads of the capillitium of a 

 definite length, smooth, occasionally echinulate. 



Common on washerwoman's tub-bench or logs. 



T. rubiformis, Pk. 



Sporangia, cyHndrical, externally, reddish, with a bluish 

 tint, fasciculate ; peridia shining, obtuse, somewhat circum- 

 scissile ; stem short, rubiginous, attenuated upwards. 



This is called Hemiarcyria according to the new nomen- 

 clature, but I think it is still a good Trichia. 



On rotten stumps, chaparral ridgewoods. 



