438 THE AGARICACEAE OF MICHIGAN 



tinate, glabrescent, shining when dry. SPORES short, elliptical, 

 7-9 x 5-6 ruicr., almost smooth, pale ochraceous. ODOR and TASTE 

 mild. 



Gregarious. On bare soil in mixed woods. North Elba, Adiron- 

 dack Mountains, New York. Collection Kauffman. September, 

 1914. Infrequent. 



The slender form of the species is illustrated by Cooke. It agrees 

 in all respects with plants found in Sweden. The stouter forms 

 approach G. cast uncus. 



**Stem white, pallid or dingy brownish. 



457. Cortinarius decipiens Fr. 

 Syst. Myc, 1821. 



Illustrations : Cooke, 111., PI. 798, B. 

 Ricken, Bliitterpilze, PI. 53, Fig. 8. 



PILEUS 2-4 cm. broad, at first conico-campanulate, then subex- 

 panded with decurved margin, prominently umbonate, vinaceous- 

 cinnamon (Ridg.), umbo blackish while losing moisture, hygro- 

 phanous, glabrous, silky-shining, margin with white-silky fibrils. 

 FLESH thin, concolor. GILLS adnate, then emarginate-uncinate, 

 close, rather broad, at first pallid or cinnamon-buff, at length mars- 

 yellow (Ridg.), edge white-crenulate at first. STEM slender, 7-10 

 cm. long, 4-7 mm. thick, scarcely incrassate downward, stuffed then 

 hollow, becoming flexuous, fragile, pallid to silky-shining, glabrous, 

 brownish within. SPORES narrowly elliptical, 7-9x4-4.5 micr., 

 scarcely rough. ODOR and TASTE slightly of radish. 



Gregarious or subcaespitose. North Elba, Adirondack Moun- 

 tains, New York. On mosses, sphagnum, etc., in balsam and tama- 

 rack swamp. Infrequent. 



This species is placed here in the sense of Ricken. I doubt whether 

 it is the typical Swedish species which I collected near Stockholm; 

 the stem of that was rubello-tinged, the gills were truly cinnamon 

 and the spores measured 9-10 x G micr. Britzelmavr also gives the 

 latter size. When young and moist the cap of our plants is chest- 

 nut-brown. 



Var. minor. PILEUS 1-2 cm. broad, stem 2-3 cm. long, 2-3 mm. 

 thick. GILLS tawny at first then mars-orange (Ridg.), thickish, 

 edge entire. STEM short, sub-bulbillate at base, often tinged sub- 



