Dean—The Myxomycetes of Wisconsin. 1261 
Lister ’s description does not agree very well with either Mac- 
bride ’s description or my specimen. Lister says the plasmodium 
is creamy white, maturing at the place of emergence, which 1 
find to be true. He says the sporangia are at first closely fasci¬ 
culate. I find them persistently so at and after maturity. He 
describes a superficial net of the capillitium which I fail to find, 
and the lack of which causes Macbride to place this species in 
the genus Comafricha . My specimen agrees with Macbride ’s 
description. 
I have one specimen, growing on poplar wood, found in the 
cemetery woods October 22, 1903. 
Diachea leucopoda (Bull.) Rost. 
1875. Diachea leucopoda (Bull.) Rost., Mon., p. 190. 
Saccardo: “Peridia cylindrical, obtuse, stipitate; stipe short, 
base thickened, snow-white, lengthened within the peridium into 
a white cylindrical columella which does not reach the obtuse 
vertex of the peiridium; capillitium threads white, slender; 
spores dark violet, iridescent, 6-8/x in diameter.” 
Macbride adds to the above characteristics that the sporangia 
are rather closely gregarious, metallic blue, or purple iridescent, 
cylindrical or ellipsoidal and sub-umbilicate below. The hvpo- 
thallus is white, venulose, occurring from stipe to stipe to form, 
an open network over the substratum. The capillitium threads 
he calls brown, which agrees with the specimens that I have. 
The spores in mass he finds to be nearly black. I find them 
slightly iridescent. The spores he calls dull violaceous, min¬ 
utely roughened, 7-9^ in diameter. The peridium is exceed¬ 
ingly thin and early deciduous ; the stipe long persistent. 
Lister finds the stalk to be stout, brittle, furrowed, one-thircl 
or one-half the height of the sporangium. He finds the capil¬ 
litium of profusely branched and anastomosing threads connect¬ 
ing the columella with the sporangium wall, dark violet-brown, 
colorless at the extremities. The spores he calls minutely 
spinulose. 
Massee adds nothing new to the above descriptions. 
T find this beautiful little species easily determined from its 
very white stipe and its dark iridescent sporange. The whole 
sporange is quite likely to disappear early, leaving sometimes a 
