196 THE MYXOMYCETES OF PICTOU COUNTY. MOORE. 



Order V. 

 MAKGAEITACE/E. 



This order is thus characterized by Lister : " Sporangia 

 normally sessile, sporangium wall single, smooth, translucent; 

 capillitium abundant, not consisting of separate elaters nor com- 

 bined into a net; spores pinkish or yellowish grey." 



Genus, Margarita Lister. 



" Sporangia globose ; capillitium a profuse web of coiled 

 hair-like, sparingly branched, slender, solid threads with 

 indistinct attachments to the sporangium wall." 



27. Margarita pictoviana Sp. !N"ov. Sporangia small, 

 depressed globose, sessile, clustered, at times confluent and 

 irregular in form, brown in color with a metallic lustre when 

 fresh, .5 l m in diameter when regular. Peridium single, 

 smooth translucent pale yellowish by transmitted light with 

 scattered included concolorous granules. Capillitium not 

 copious, of delicate somewhat flattened hair-like threads papil- 

 lose along both margins, the flattened surface roughened, rarely 

 branching and occasionally shewing attachments to the peri- 

 clium; threads about 2/>t in maximum diameter. Spores pale 

 yellowish by transmitted light, spinulose 11 13.5/>t in diameter. 

 Spore mass pinkish grey. Collected on decorticated decaying 

 Psuga canadensis at Pictou, !N". S., September 23rd, 1905. 



Order VI. 

 TRICHIACE.E. 



Fructifications of distinct sporangia, rarely plasmodio- 

 carpous. Capillitium consisting of definite threads, free or 

 attached to the sporangial wall or united to form an elastic net. 

 Generally marked with thickenings in the forms of warts, 

 spines, spirals, rings, cogs, etc. 



