Cortinarius obtusus (Fr.) Fr. 1838

In Great Britain and/or Ireland:
Foodplant / mycorrhiza / ectomycorrhiza
fruitbody of Cortinarius obtusus is ectomycorrhizal with live root of Ectomycorrhizal broadleaved trees and shrubs
Remarks: Other: uncertain

Cortinarius obtusus Fries, Epicr. Myc. 313. 1838
Agaricus obtusus Fries, Syst. Myc. 1: 233. 1821.
Pileus submembranaceous, fragile, conic-campanulate, at length expanded and umbonate, or the umbo vanishing, 2-4 cm. broad; surface glabrous, Sudan-brown (R) to amber-brown (R) and striatulate nearly to the center when moist, light-ochraceous-buff (R) and even when dry, hygrophanous, losing moisture rapidly; context concolorous, thin, the odor and taste slight; lamellae adnate, seceding, subdistant, broad, ventricose, thickish, the shorter ones narrower, sometimes intervenose, at first clay-colored (R) to ochraceoustawny (R), finally cinnamon, the edge entire; stipe equal or attenuate at the base, 4—6 cm. long, 3-6 mm. thick, cespitose or gregarious, fragile when fresh, subrigid-brittle when dry, the surface with scattered, appressed, silky fibrils, then glabrescent and shining, flexuous, soon hollow, alutaceous-lutescent or pallidyellowish-brown when moist, whitish when dry, concolorous within; spores broadly ellipsoid, roughish, 8-10 X 5-6 p, pale-ochraceous under the microscope.
Type locality: Sweden.
Habitat: Under coniferous trees, in mountain forests.
Distribution: Adirondack Mountains, New York, and Rocky Mountains, Colorado; also in Europe.