Bean—The Myxomycetes of Wisconsin. 
1285 
Massee make? this species Arcyria serpula. His description 
does not differ materially from the others. He speaks of a form 
collected in Cnha which was subglobose, scattered, and seated on 
a broad base. 
The specimens which I have show the same structure and 
habits of growth as already described. I find the sparingly^ 
branched capillitium threads 5-6/a thick, some free ends which 
are acuminate, spinose; spores reticulate with narrow bands, 9- 
12 fi. 
We have two specimens, both from Blue Mounds, growing on 
much-decayed wood and bark, collected August 18, 1902, and 
April 29, 1904, respectively, the latter evidently the fruit of the 
previous year. 
Hemitrichia vesparium (Batsch) Macbr. 
1786. Ly coper don vesparium Batsch, Eleuch. Fung., pp. 255-6, 
hg. 172. 
1899. Hemitrichia vesparium (Batsch) Macbr., N.-A. S.-M. p. 
203. 
Saccardo: ‘ 4 Sporangia fascicled, with short connate stipes, cyl¬ 
indrical-turbinate, with a metallic lustre, dark red; spores and 
capillitium cinnamon- or ruby-red; capillitium threads 4-5 /a 
thick, rarely branched, free ends acute, smooth, or inflated and 
ending with a short spine, rarely obtuse; spiral bands 2-4, armed 
with numerous spinules, the spaces between twice the width of 
the bands; spores smooth, 10-lly in diameter/’ 
Macbride’s description in part: ‘‘Sporangia rarely single, 
clavate or subcylindric, stipitate or sessile, dark wine-red or red- 
black; stipes solid, concolorous; capillitium marked by three or 
four spiral ridges; spores by transmitted light reddish orange, 
very distinctly warted, subglobose, 10-12/x. A most common 
species on rotten wood, everywhere, especially in forests. Recog¬ 
nized generally at sight by its color and fasciculate habit. The 
peridium often shows a tendency to circumscissile dehiscence, 
and persists long after the contents have been dissipated, in this 
condition suggesting the specific name applied by Batsch, vespar¬ 
ium, wasp-nest. Rostafinski describes the spores as smooth; 
they seem to be uniformly distinctly warted. The plasmodium 
