1242 Wisconsin Academy of Sciences, Arts and Letters. 
16, 1904, in Yilas woods, is upon decayed wood and a thin layer 
of green moss growing on the wood. On July 21, 1904, I found 
several specimens in Cemetery woods, some upon wood, some 
upon hark, and one very beautiful group about two inches long 
and a third as wide upon a thin curled dead oak leaf upon which 
was also a group of Diachea leucopod.a, A fine group of the 
sporangia was found growing upon the bark of a little thrifty 
hard maple tree about six inches from the ground, at Blue 
Mounds, July 23, 1904. 
Bfueilago spongiosa (Leyss.) Morgan. 
1783. Mucor spongiosus Leysser, FI. Hal ., p. 305. 
1897. Mucilago spongiosa (Leyss.) Morgan, Bot. Gaz v XXXV., 
p. 56. 
Saccardo: “LEthelia grayish-white, 2-6 cm. long, 2-3 cm. 
wide, spongy; columella hollow, cylindrical, branched, not reach¬ 
ing the apices of the peridia, capillitium threads thick, branched, 
with much thickened nodules; spores spinulose, dark violet, 10/a 
in diameter/’ 
Macbride speaks of the component sporangia as resting upon 
a common hypothallus and being protected by a more or less 
deciduous calcareous, porous cortex. lie finds the columella in¬ 
definite or none, the hypolhallus white, spongy. He finds the 
spore mass black, the spores violaceous, exceedingly rough, large, 
10-15/a in diameter. In fruiting, the plasmodium, he states, 
ascends preferably living stems of small bushes, herbaceous 
plants, or grasses, and forms the asthalium around the stem 
some distance above the ground. 
Lister finds the asthalia to be 2 to 4 cm. long, 1 to 2 cm. wide, 
and about 1 cm. thick, which agrees with the measurements of 
my specimens. He finds the columella to be sometimes absent. 
The capillitium is a network of widely branching, anastomosing, 
stout, purplish-brown threads, with numerous dark calciCorm 
thickenings, hyaline at the extremities. This statement X find 
to be true, the thickenings on the capillitium threads being quite 
distinctive. The spores he makes out to be dull purple, strongly 
spinulose, X0-13y in diameter. 
Massee does not differ from the descriptions quoted above. 
This species is also called Spurn-aria- alba (Bull.) I). C. 
