Russula crenulata Burl. 1913

Russula crenulata Burl. Mycologia 5 : 310. 1913
Pileus broadly convex, then plane to depressed, up to 9 cm. broad; surface milk-white or slightly yellow, viscid when moist, with pellicle easily separable, glabrous; margin thin, slightly striate-tuberculate with age: context fragile, white, very acrid; lamellae white, equal, not forking, edges appearing under the lens finely notched or crenate, rounded at the outer ends, narrowed behind, close, pruinose; stipe white, spongy, nearly equal or enlarged below, glabrous, spongy within, 10 cm. long, 2 cm. thick: spores white, mostly globose, echinulate, lO/x in diameter.
Type locality: Glen Brook, Oregon. Habitat: In a dense fir forest with a few oaks. Distribution: Known only from the type locality.