Cortinarius dilutus (Pers.) Fr. 1838

Cortinarius dilutus Fries, Epicr. Myc. 305. 1838
Agaricus dilutus Fries, Syst. Myc. 1: 235. 1821.
Pileus subfleshy, convex, then expanded, finally irregular, 3-5 cm. broad; surface glabrous, hygrophanous, opaque, chestnut-brown (R) and even on the margin when moist, losing moisture first on the disk and fading at first to rufous (R) or ferruginous (R), finally cinnamon-buff (R) ; margin at first incurved and white-cortinate ; context thin, soft, very thin on margin, concolorous, fading, the odor and taste mild; lamellae adnate, then emarginate, close, up to 10 mm. broad, often crisped, at first pale-cinnamon, then tawny (R) ; stipe subequal or tapering upward, 4—6 cm. long, 5-10 mm. thick, soft and spongy within, at first covered by the rather copious, white-silky cortina, rarely obsoletely cingulate, glabrescent, whitish; spores globose, slightly rough, 6-7 X6/i, pale, subochraceous under the microscope.
Type locality: Sweden.
Habitat : Under pines, in mountains.
Distribution: Adirondack Mountains, New York; Rocky Mountains, Colorado; Olympic Mountains, Washington; Mount Hood, Oregon; also in Europe.