MICHIGAN ACADEMY OF SCIENCE. 
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by^a definite mouth. Capillitium is present. Gleba not chambered. Spores 
usually 5-6 mic., dry. Only one genus is reported. The various species 
from Mich, can be referred to three species. 
Key to species. (Sense of Lloyd and White.) 
(a) Mouth entire, rather cylindrical, short, round, protruding. 
Tylostoma rufum. 
(a) Mouth surrounded by a fimbriate cushion (b) 
(b) “Mouth with a small development of fibrils, usually torn and granular 
in appearance. ” Stipe short, thick Tylostoma campestre. 
(b) Mouth raised, somewhat tubular, but lacerate. Stipe slender. 
Tylostoma fibril losum. 
(a) Tylostoma rufum Lloyd. 
Other names: 
Tylostoma mammosum Fr. (4th Mich. , Report.) 
Tylostoma pedunculatum (L) Schr. (In Miss White’s paper.) 
Reported for Mich, by Longyear, also by Miss White as from McBride. 
According to Lloyd, the true T. mammosum does not occur in America. The 
inner peridium is reddish-brown, with a strongly protruding mouth. Stem 
is deep-colored, short scaly, white within. Spores 5 mic, granular. 
(b) Tylostoma campestre Morg. 
Other names: 
Tylostoma granulosum Sw. ? (N. A. Fungi by Ellis and Everhart, 
No. 3297 (European form according to Lloyd.) 
Tylostoma fimbriatum Fr. (per Lloyd.) 
Two collections from Michigan are reported by Lloyd as sent by Long- 
year. This is the most common species in the United States. The peri- 
dium is whitish; the cortex is a sand case, brown-scaly underneath the sand, 
and gradually falling away. Mouth torn and granular in appearance, not 
prominent. Stipe dark, striate-sulcate, rather short and thick. Capilli- 
tium hyaline, with few septa, not swollen. Spores granular. In sandy 
fields, probably thruout the state. 
(c) Tylostoma fibrillosum White. 
Referred by Lloyd to the preceding. Found by Hicks in Michigan, 
according to Miss White. It was found by me west of Chelsea in a sandy 
grass field. Miss White illustrate our plants well, except that the mycel- 
ium of the stem is washed off many of them. The inner peridium is dull 
chalk-white, the mouth is round, somewhat protruding and usually sur- 
rounded by a definite lacerate, cushion of fibrils. The capillitium is hyaline, 
swollen at the joints, and the spores are minutely but distinctly asperate, 
ochraceous-brown in mass with a pink tinge. 
4. Sphoerobolaceae. 
Sphoerobolus carpobolus L. 
Other name: Sphoerobolus stellatus Tode. 
Very minute plants. The fruit-body is whitish, often oidy 1 to 2 mm. in 
diameter, globose at first, then the orange-colored slimy interior is expelled 
at maturity as a sphere. On or under decaying leaves and rotting woods. 
Probably thruout the state. 
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