Dean—Tine Myxomycetes of Wisconsin. 1241 
woods on dead oak leaves, July 18, 1904, these last mixed with 
Didymium nigripes. 
Leu carp us fragilis (Dicks.) Rost. 
1785. Ly coper don fragile Dickson, Fasc., PI. Crypt, Brii., I., 
p. 25. 
.1875 Leocarpus fragilis (Dicks.) Rost., Mon., p. 132 
Saccardo: “Peridia aggregated, sessile or stipitate, obovoid 
rarely subrotund, yellowish- or reddish-brown, polished, stipe 
filiform, ascending, white or yellowish; spores globose, dusky- 
dark, spinulose, 12-14 fx in diameter. ’ ’ 
Macbride calls the sporangia rusty or brownish-yellow, open¬ 
ing in a somewhat stellate fashion. He describes the stipe as 
weak and short, and the spores as dull black. He says the spor¬ 
angia are recognizable at sight as they resemble the eggs of cer¬ 
tain insects. The capillitium, he states, is of two or more dis¬ 
tinct systems, the one a delicate network of hyaline, limeless 
threads, the other calcareous throughout, or nearly so, the meshes 
large and the threads or tubules broad. 
Lister says of the capillitium that it is a network of rigid hya¬ 
line threads with flattened expansions at the axils and with few 
lime-knots, connected with a system of coarse branches often 
combined into a dense network and charged throughout with 
brownish lime-granules. He finds the spores occasionally 15-20u, 
in diameter, rarely clustered as in Badhamia. 
Massee sometimes finds several sporangia more or less grown 
together. 
For the capillitium as I find it, Lister’s description is very 
good. The reticulated hyaline threads are continuations of the 
coarser reticulated threads containing yellowish lime granules. 
There are not two distinct systems of capillitium threads as I see 
them. I find the spores to be dusky purplish, distinctly warted, 
and from 9-15 /a in diameter. The "weak, white stipes are quite 
often united, sometimes as many as five making a thin expanded 
common stipe. The sporangia seem to open irregularly. 
Some of this species were found at the Brule river, July 19, 
1897, growing upon dead leaves and twigs. 
One specimen w^hich I have was found July 13, 1904, in Ceme¬ 
tery woods, growing upon decayed wood; another, found July 
