LONGYEAR ON MICHIGAN FUNGI. 115 



Order Hymeuomycetese. 

 Family Agaricinea;. 



Agaricus abruptus Pk. Woods. Not uncommon. Summer. 



Agaricus arvensis Schaeff. B'ields and roadsides. Not plentiful. Summer. 



Agaricus campester L. Fields and gardens. Common. Summer and autumn. 



A. campester var. hortensis. The cultivated form. 



Agaricus diminutivus Pk. Woods. Rare. Summer. 



Agaricus placomyces Pk. Woods. Not uncommon. Summer. 



Agaricus pusillus Pk. n. sp. Described from material collected at Detroit by 

 Dr. R. H. Stevens. Also collected on campus of Agricultural College. 



Agaricus Rodmani Pk. Pastures. Uncommon. Summer. 



Agaricus silvaticus Schaeff. Woods. Uncommon. Summer. 



Amanita Frostiana Pk. Woods. Not abundant. Summer. Poisonoug. 



Amanita muscaria Fr. Woods and shady places. Not abundant. Summer and 

 autumn. Poisonous. 



Amanita phalloides Fr. Woods. Very common. Summer and autumn. Poi- 

 sonous. 



Amanita rubesceus Fr. Woods, common. Summer and autumn. 



Amanita verna Fr. Woods. Comm.on. Summer and autumn. Poisonous. 



Amanitopsis vaginata Roze. Woods. Common. Summer and autumn. 



Annularia mammillata Longyear. Described in 3d annual report of Michigan 

 Academy of Science, 1901, as follows: Pileus 1.7 cm. broad, plane with margin a 

 little elevated when mature, disk raised in the form of a prominent mammilliform 

 umbo, flesh very thin, soft, surface minutely roughish, whitish except the umbo 

 which is lemon-yellow; gills free, ventricose, broad, thin, somewhat crowded, 

 3 mm. broad, pale flesh color; stem 3.5 cm. long 1.5 mm. thick at apex, gradually- 

 enlarging to the base which is 3 mm. thick, smooth above and silky below the 

 ring, white; ring membranous, persistent, white; cystidia spindle-shaped, swollen 

 In the middle 20x50 microns, spores subglobose, smooth, pale flesh color 5-6 

 microns. On decaying logs in woods. Greenville, July 16, 1900. 



This little agaric is evidently rare, only one specimen being found, and is espe- 

 cially interesting because no species of this genus seem to have been thus far 

 recorded as occurring in this country. 



The striking character of the specimen is the prominent yellow umbo which 

 rises abruptly from the flattened pileus. 



Armillaria mellea Vahl. Woods, very abundant. Autumn. 



Cantharellus aurantiacus Fr. Woods. Not uncommon. Summer. 



Cantharellus cibarius Fr. Woods. Summer and autumn. Common. 



Cantharellus cinnabarinus Schw. Woods. Not common. Summer and autumn. 



Cantharellus dichotomus Pk. Swampy places. Rare. Autumn. 



Claudopus byssisedus Pers. On old wood in damp places. Lewiston. Beardslee. 



Claudopus nidulans (Pers.) Pk. On logs. Not rare. 



Clitocybe albissima Pk. Found at Greenville. Barlow. 



Clitocybe caespitosa Pk. 



Clitocybe candicans Pers. (Hicks 111.) 



Clitocybe clavipes Pk. Collected at Greenville. Barlow. 



Clitocybe connexus Pk. Found once at Pleasant Lake, Jackson county. 



Clitocybe cyathiformis Bull. Woods. Not common. Summer. 



Clitocybe dealbata Sow. Lawns and pastures. Autumn. Common. 



Clitocybe illudens Schw. Near stumps. Common. Sun^mer. 



Clitocybe gigantea Sow. Woods. Not common. Summer. 



Clitocybe infundibuliformis Schaeff. Woods. Abundant. Summer. 



Clitocybe multioeps Pk. Near decaying wood. Common. Spring to autumn. 



Clitocybe nebularis Batsch. Sent one from Ludington. Blodgett. 



Clitocybe odora Bull. Woods. Plentiful. Summer. 



Clitocybe sinopica Fr. Woods and groves. Not common. Summer. 



Clitopilus abortivus B. & C. Woods. Abundant. Summer. 



Clitopilus albogriseus Pk. In cedar swamps, I found this species quite plentiful 

 during the wet weather in August. Lewiston. Beardslee. 



Clitopilus CEespitosus Pk. Woods near M. A. C. October, 1898. 



Clitopilus micropus Pk. Sandy pastures. Not rare. Summer. 



Clitopilus noveboracensis Pk. var. brevis Pk. Woods, M. A. C. Found once. 



Clitopilus prunulus Scop. Woods. Not common. Summer. 



Collybia alcalinolens Pk. Swamps. Not common. Autumn. 



Collybia colorea Pk. Decaying pine. Greenville. July. 



Collybia confluens Pers. Woods. Abundant. Summer and autumn. 



