Russula murrillii Burl. 1913

Russula murrillii Burl. Mycologia 5: 310. 1913
Pileus convex, becoming plane then depressed, up to 5 cm. broad; surface violaceous or darker in the center or entirely darker, pruinose, becoming floccose-pruinose, evidently viscid when wet but soon dry; margin even: context white, thin, taste not noted; lamellae ochroleucous when fresh, becoming deeper yellow, equal, rarely forking next to the stipe, venoseconnected, rounded at the outer ends, narrowly adnate at the inner, subdistant, rather broad; stipe chalkwhite, unchanging in drying, nearly equal, firm, stuffed, then tending to become hollow, glabrous; spores pale-yellow, echinulate, some globose but many elliptic, 7 X 10 /i.
Type locality: Corvallis, Oregon.
Habitat: In fir forests with scattered specimens of oak, birch, willow, and maple.
Distribution: Known only from the type locality.