HEMITRICHIA 299 



abandoning Wigand's name were Persoon's invalid. According to 

 Lister, Trichia nana Mass., from Maine, is the same thing, but this 

 is not clear from the description. Persoon gives a synonymy which, 

 in the nature of the case, is unverifiable, the specific characters being 

 microscopic. 



Fries (Syst. Myc. 3 : 187) confirms Persoon and takes pains to say 

 that the color separates it from T. chrysosperma (i. e., T. favoginea) 

 with which it is sometimes compared. 



Rare. Maine, Massachusetts, New York, Ohio, Ontario; Europe, 

 Japan. 



8. Hemitrichia minor G. Lister 



Jour. Bot. 49 : 62. 1911. 

 PI. XXI, Figs. 561, 565. 



Sporangia short-stalked or sessile, subglobose, occasionally united 

 or forming short plasmodiocarps, 0.2-0.4 mm. in diameter, glossy or 

 pale yellowish buff; sporangium wall membranous, pale yellow, mi- 

 nutely papillose or marked with faint curved lines, and bearing 

 superficial deposits of granular material; stalk, when present, black, 

 0.1-0.2 mm. tall, enclosing refuse matter; capillitium a loose, flaccid 

 network, the spirals sinistrorse, faint, with or without spines; spores 

 pale yellow, minutely warted, 9-10 fx. 



The var. pardina Minakata (Trans. Br. Myc. Soc. 5 : 82, 1914) 

 has more numerous granules on the peridium; the spirals are said to 

 be dextrorse. 



The spirals are so faint that this species would seem to be better 

 accommodated in Ophiotheca or Perichaena. In all American specimens 

 the spines are well developed. We are indebted to Miss Lister for the 

 determination of our material. The variety is externally so different 

 from the typical form as to suggest a distinct species but intermediate 

 forms occur. In general the variety tends to be stalked and the typical 

 form sessile or plasmodiocarpous. Our specimens all developed on 

 bark, dung or dried grass and Utter in moist chambers. 



Ontario, Iowa; Great Britain, Japan. 



9. Hemitrichia leiotricha Lister 



Mycetozoa ed. 2. 224. 1911. 

 1894. Hemitrichia intorta Lister var. leiotricha Lister, Mycetozoa 176. 1894. 



Sporangia short-stalked, rarely sessile, scattered, subglobose, shin- 

 ing dull yellow or olivaceous, 0.5-0.9 mm. in diameter; peridium usu- 

 ally composed of a translucent inner portion marked with scattered 



