context_color_color change
darkening|exposure
pileus context whitish, pallid, pale yellowish buff, brownish white or watery brown to brownish yellow above stipe apex; stipe context buff white to pallid or yellowish buff with dull watery brown streaks, cortex sometimes more yellowish, base darker yellow, sordid or dull brownish; darkening on exposure or with age to brown or reddish brown in stipe
Cortinarius brunneofibrillosus
Cortinarius brunneofibrillosus