Dean—The Myxomycetes of Wisconsin. 1225 
her, 1899 and 1903; in Nelson’s woods August 22, 1903; at Star 
Lake in August 1901; Palmyra, July 3, 1903; Blue Mounds, Aug¬ 
ust 8, 1903; Brule river, July 17, 1897, and near Webster in 
the summer of 1894. An Eethalium also formed and ripened un¬ 
der a bell-jar in the herbarium room upon a piece of bark brought 
from Elmside woods in the fall of 1903. The plasmodium of this 
specimen was at first a delicate creamy white, but just before 
aggregating into the sethalium it became yellow. Another small 
sethalium was found at Algoma, October 1904. 
Fuligo vioiacea Persoon. 
1801. Fuligo vioiacea Persoon, Syn. Meth p. 160. 
Macbride: ‘‘iEthalium thin, two or three inches wide, covered 
by a cortex at first bright yellow and very soft, at length almost 
wholly vanishing, so that the entire mass takes a purple violet 
tint, upper surface varied with white; capillitium rather open, 
the more or less inflated, large, irregular nodes joined by long, 
slender, delicate, transparent filaments; spores dark violet, min¬ 
utely roughened, spherical, about 7.5/*.” 
Neither Lister nor Massee recognizes this species. 
This is very different in general appearance from F. septica. 
The absence of the cortex almost as soon as the sethalium is ripe, 
the delicate violet color of the remainder, and the small spores 
make this species not impossible to differentiate from F. septica. 
I find the spores to be from 7-8/x, and none over 8/x in diameter. 
We have one specimen growing on decayed wood, found in the 
lake shore woods at Sturgeon Bay, July 24, 1907. 
It is quite possible that among the older specimens in our col¬ 
lection there may be some that should bear the name, which are 
labelled F. septica , but which are so badly preserved or so much 
eaten by insects that it is difficult to determine them. Macbride 
says of F. vioiacea , “ Probably everywhere, but not distinguished 
from F. ovata the latter being the name which he adopts for F. 
septica. 
