Phaeocollybia radicata (Murrill) Singer 1951

Naucoria radicata Murrill, sp. nov
Pileus rather thin, irregular, campanulate to subexpanded, with a prominent, rounded umbo, solitary, 4 cm. broad; surface smooth, glabrous, hygrophanous, uniformly fulvous, margin concolorous, incurved, not striate ; lamellae sinuate-adnexed, irregular, crowded, rather narrow, whitish or pale-isabelline, becoming ferruginous in dried specimens, concolorous and dentate on the edges; spores ellipsoid, smooth, pale-yellow under the microscope, 6-7 X 3-4 /*; stipe fusiform, smooth, glabrous, pale-latericious, blackening when bruised, long-radicate, 9 cm. long, 2-3 mm. thick.
Type collected on the ground in coniferous woods at Glen Brook, Oregon, November 7, 1911, W. A. Murrill 775 (herb. N. Y. Bot. Gard.).
Distribution: Known only from the type locality.