376 THE AGARICACEAE OE MICHIGAN 



369. Cortinarius annulatus Pk. 



N. Y. State Mus. Eep. 43, 1890. 



Illustrations: Ibid, PL 2. Figs. 14. 

 Plate LXXVIII of this Report. 



PILEUS 3-9 cm. broad, broadly convex at first, then sub- 

 expanded, obtuse, dry, disk or entire surface usually covered 

 with in numerable, minute, pointed, erect floccose and tawny 

 scales, sometimes smooth, ground color, golden-tawny or tawny 

 yellow, with a bronze lustre, margin at first incurved. 

 FLESH thick, whitish, scarcely or not at all hygrophanous. 

 GILLS adnate, becoming emarginate, rather narrow, 4-9 mm. sub- 

 distant, distinct, at first pallid ochraceous, then rusty-cinnamon, 

 rather rigid, edge paler. STEM 4-8 cm. long, apex 8-15 mm. thick. 

 clavalc, twice as thick below, sometimes subequal, peronate three- 

 fourths to apex by the thin, silky-woven, appressed, pale tawny or 

 yellowish universal veil, which terminates above in an obscure ring, 

 solid, yellowish Avithin, whitish and fibrillose above the veil from the 

 white CORTINA, base whitish, arising from a white mycelium. 

 SPOKES globose, distinctly rough, 6-7 x 5-6 micr., dark rusty-brown 

 in microscope. ODOR of radish. TASTE mild or slightly as- 

 tringent. 



1 1 i-egarious, or scattered, sometimes in troops. On the ground in 

 frondose or mixed, rich woods. August-October, usually rather 

 early. Ann Arbor, Detroit. Not infrequent. 



This species seems to represent the American form of C. tophaceus 

 Fr., but the figures of that species as given by Fries, Cooke and 

 Quelet do not remind one at all of our species. It is not easy to 

 bring out in a figure the metallic, somewhat glittering, luster 

 shown by a typical pileus of this plant. Ricken's figure of C. 

 tophaceus comes nearer to the exact color, but he describes that 

 species with the edge of the gills bright yellow. C. annulatus differs 

 from C. flavifolius in the color of the universal veil and the scaly 

 [•ileus. Specimens have been seen, however, in which the color of the 

 pileus varied to ochraceous or clay-color, with brown scales. The 

 scales, when well-developed, radiate in a star-like or bird-foot man- 

 ner connecting with one another and raised in the center to a needle- 

 like point. In the very young plant the surface of the cap is merely 

 densely and finely tomentose, this layer connecting with the veil 

 on the stem. Sometimes the scales are almost entirely lacking ex- 



