Inocybe insinuata Kauffman 1924

Inocybe insinuata C. H. Kauffman, sp. nov
Pileus slightly fleshy, subovoid, campanulate, finally convex-expanded, obtuse or broadly subumbonate, 3-5 cm. broad; surface dry, innately silky-fibrillose, chalky white; margin even; context white; lamellae sinuate-adnexed, narrow, close, whitish then pale-rusty-clay-colored stipe short, equal above the subemarginate bulb, stuffed to hollow, innately fibrillosesilky, white, 2.5-4 cm. long, 6-8 mm. thick; spores ellipsoidovoid, inequilateral, pale-rusty-tinged under the microscope, smooth, 8-9 X 4.5-5.5 ju; cystidia thin-walled, mostly slender, cylindric to subventricose above a slender pedicel, rarely elliptic and broad, hyaline, scattered on the sides, inore numerous on the edges of the lamellae, 55-65 X 8-15 ju-
Type collected on the ground under pines, on the campus. University of California, Berkeley, California, January 29, 1915, W, A. Setchell 1063 (herb. N. Y. Bot. Gard.). Distribution : Known only from the type locality.