1288 Wisconsin Academy of Sciences, Arts and Letters. 
cup beneath; stipe about one-half the total height, (reddish, red¬ 
dish-brown, or blackish, hollow about one-half way down; spirals 
on the capillitium four or five, regular, even, and projecting 
sharply; capillitium variable in the number of free ends, degree 
of smoothness, and amount of branching. Spores pale yellow, 
minutely but distinctly warted, 8-9/* in diameter. 
Lister describes the plasmodium as watery white in dead wood; 
“total height 1 to 3 mm.; sporangia rarely globose; sporangium 
wall minutely papillose on the inner side; capillitium 5-6/* in 
diameter, with 5-6 spiral bands 1/* wide with intervals of 1 to 
1.5 jjl, sometimes spinose in parts in imperfect developments; 
spores 8-10/a in diameter. ’ ’ 
Massee names this species an Arcyria. He describes the stem 
as filled with large, gobose or sub-angular cells which pass up¬ 
ward into normal spores; he calls the capillitium 4-5/a thick; 
spores reticulated, 8-10/*, but, he says, that ridges are sometimes 
short and distinct or even wart-like. 
The many specimens which we have vary from light yellow, 
shining, to brownish, dull; some forms are nearly sessile, while 
in others the stipe is more than half the total height. The long- 
stiped forms are clavate or turbinate, the short-stiped ones more 
nearly globose. The capillitium is centrally attached to the cup, 
and when set free by the evanescence of the upper part of the 
peridium it usually hangs from the cup in a long ragged mass. 
In such cases the cup in quite deep and the edge irregular. But 
I have several forms gathered at different times*and places, 
which have short stipes and in which the peridium breaks away 
at the top, the lower part becomes distinctly reflexed and leaves 
a small shallow cup upon which the capillitium-mass remains 
quite permanently as a little globose mass. The capillitium and 
spores of these specimens show no variations from the otheir 
specimens. The capillitium is 6-7/a wide, with four or five 
spirals, smooth, even; the spores are minutely warted. 
In April and May, 1904, many of this species appeared in the 
Science Hall greenhouse, upon decaying logs, mostly oak and 
poplar, which had been brought in the fall previous. These 
forms have unusually long stipes and the sporangia are rather 
smaller than the average. The plasmodium is within the wood 
and is watery white ; it begins to pile up in milky-white drops 
as soon as it comes to the surface. Then it elongates upward, 
