340 THE AGARICACEAE OF MICHIGAN 



GILLS narrowed behind, narrowly adnate, moderately broad, close, 

 at length dingy yellowish or pallid, hung with the fibrillose remains 

 then cinereous, finally rusty-cinnamon, edge minutely fimbriate. 

 STEM 6-8 cm. long, 8-18 mm. thick, violaceous-blue, fading to bluish, 

 at length dingy yellowish or pallid, hung with the fibrilllose remains 

 of the cortina, dry, equal, solid, icitJi a marginatc, subdepressed, 

 hemispherical bulb, which is clothed by a thin, ochraceous-buff, uni- 

 versal veil. CORTINA very copious, white or faintly bluish. 

 SPORES ventricose-elliptieal, with a prominent, papillate apiculus, 

 very tuberculate, rather symmetrical, 9-12 x 0-7 micr. Edge of gills 

 provided with inflated, sterile cells. ODOR and TASTE mild. 



Gregarious or subcaespitose. Among fallen leaves in mixed or 

 fpondose woods. Ann Arbor, New Richmond. September-October. 

 Infrequent. 



This may be considered a segregate of C. caerulescens, and corre- 

 sponds to Ricken's description of that species (Bliitterpilze, p. 129), 

 but is different from the conception of Maire (Bull. d. la. Soc. Myc. de 

 France, Vol. 27, p. 420) and that shown by the Friesian unpublished 

 plates. The spores of our plant, as well as the very abundant cor- 

 tina, are quite distinguishing. The colors of the gills and stem 

 incline to blue. Several collections show that the pileus may be 

 deep violet at first in some forms, but eventually the ochraceous- 

 buff color of the universal veil pervades also the surface of the 

 pileus. The universal veil is less manifest and less persistent than 

 in the preceding species. 



322. Cortinarius herpeticus Fr. 



Epicrisis, 1836-38. 



Illustrations: Cooke, 111., PL 819. 



Ricken, Die Bliitterpilze, PL 37, Fig. 4. 



IM LEUS 3-10 cm. broad, convex, subexpanded, firm, smoky-olive or 

 olivaceous, tinged brownish on disk, fading, with a viscid, separable 

 pellicle, even, glabrous, margin at first incurved, thin. FLESH 

 thickish, firm, abruptly thin on margin, evanescently violaceous, 

 then whitish. GILLS rounded behind, adnexed-emarginate, close, 

 moderately broad, smoky-violet or olivaceous at first, smoky-brown 

 at length clay-color (Ridg.), then smoky-cinnamon. STEM 3-5 cm. 

 long, 8-18 nun. thick, solid, violaceous-blue at first, fibrillose by the 

 whitish cortina, equal above the marginate-depressed bulb, which 



