Cortinarius virentophyllus Kauffman 1918

Cortinarius virentophyllus C. H. Kauffman, Agar. Mich. 1 :
353. 1918.
Pileus fleshy, convex, expanded-plane, regular, 5-8 cm. broad; surface glabrous, viscid, green to olivaceous-yellowish, fading to pale-ochraceous or straw-yellow, sometimes fulvoustinged, slightly streaked by the drying gluten; context thickish on the disk, very thin on the margin, pallid-greenish, fading, subhygrophanous, with dark-watery-green border along the lamellae, the odor and taste mild; lamellae adnexed-emarginate, thin, close, somewhat narrow, gray-olive or green at first, becoming deep-green, the edge entire; stipe subcespitose, 5-7 cm. long, 10-15 mm. thick, silky-fibrillose, stuffed by fibrous pith then hollow, distinctly cyanous or pale-blue, fading to violaceous-whitish, bluish within then fading, equal above the subemarginate bulb, the bulb becoming oval or subobsolete; spores almond-shaped, broadly ellipsoid, distinctly tuberculate, 9-11 X 6-7 p.
Type locality: Ann Arbor, Michigan. Habitat: On the ground, in frondose woods. Distribution: Michigan and Wisconsin.