Bean—The Myxomycetes of Wisconsin. 
1281 
shallow, saucer-like, inwardly roughened calyculus; capillitium 
loose, broad, pale reddish, attached to the cup at the center only, 
by strands which enter the hollow stem, the threads adorned with 
transverse plates, cogs, ridges, etc., arranged in an open spiral; 
spore-mass rosy, spores by transmitted light colorless, nearly 
smooth, 7-8u, This common species is well marked, both by its 
color and by the delicate attachment of the capillitium to the caly¬ 
culus. This is so frail that the slightest breath oftimes suffices* 
to effect a separation, and the empty calyculi are not infrequently 
the only evidence of the fructification.” 
Lister says that the cup of the sporangium wall is membranous, 
even or interrupedly plicate, and spinulose. He finds in the 
capillitium here and there broad perforated or ring-like expan¬ 
sions. and the thread often swollen at the axils of the branches. 
He finds free ends present and more or less numerous, clavate or 
pointed, spinose. He also speaks of the capillitium as being 
without attachment to the cup, and says that it is more diffusely 
expanded than that of Trichia punicea. 
Massee, as well as the other authors quoted, describes the capil¬ 
litium as “ having very few attachments to the basal portion of 
the thin sporangial wall.” 
This species T distinguish from A. denudata by the slight at¬ 
tachment of the capillitium to the calyculus, the greater expan¬ 
sion of the capillitium mass, and by the much shorter stipe. I 
find few free ends, one specimen showing none at all; large 
and small rings are numerous and there are some swellings 
along the thread. Another specimen shows several free ends. 
In general, Macbride’s description is accurate for my specimens. 
We have specimens from Brule River, July 19, 1897, growing 
on moss, and on Norway pine bark: from Lake Mills on poplar 
wood, gathered November 1901; from the cemetery woods and 
other parts of Madison, October 1903, and on a poplar log in the 
Science Hall greenhouse, October 1903. 
