:;s _. THE AGARICACEAE OF MICHIGAN 



fully appressed silky, even, uot umbouate. FLESH whitish or at 

 first tinged violaceous, thick on disk, abruptly thin on margin. 

 <;IU,S narrowly sinuate-adnate, narrow, close, pale violaceous, 

 rarely deep violaceous at first, soon pale alutaceous-cinnamon, edge 

 minutely eroded-crenulate. STEM 5-8 cm. long, 10-20 mm. thick, 

 solid, subequal above the oval-bulbous or rounded-bulbous base, bulb 

 sometimes subemarginate, not depressed, sometimes subobsolete, 

 soon silvery -violaceous-whitish, at first somewhat deeper violet at 

 ajicx. concolor within, at first subfibrillose from the violaceous-white 

 CORTIXA, then innately silky, not at all penmate. SPORES 

 elliptical, slightly rough, 7-9.5 x 5-0 micr. BASIDIA 30 x 9 micr., 

 4-spored. ODOR mild. TASTE slight. 



Solitary or scattered. On the ground in woods of white pine and 

 beach or in low frondose woods. Detroit, New Richmond. Septern- 

 ber. Infrequent. 



This seems to be intermediate between C. argentatus and G. cam- 

 pJioratus, and differs from both in the more abrupt bulb than is 

 shown by the figures of those plants. On the other hand, variations 

 occur in the same collections in which the clavate-bulbous condi- 

 tion is present. On several occasions single plants were found. 

 which agreed with the others except that there * was present a dis- 

 tinct, penetrating odor, of an earthy-radishy nature. I have here 

 considered them all the same. The narrow gills are always close, 

 sometimes crowded, and this distinguishes it from the preceding. 

 The surface of the pileus is scarcely or not at all differentiated 

 into a pellicle or other layer although a very slight viscidity de- 

 velops if the plant is kept enclosed for a time in a tight receptacle. 

 In habit, size and paler gills it differs markedly from G. obliquus. 

 There is no universal veil. 



378. Cortinarius obliquus Pk. 

 X. Y. State Mus. Bull. 54, 1902. 

 Illustrations : Ibid, PI. L, Figs. 1-5. 



PILEUS 3-6 cm. broad, broadly convex, subexpanded, dry, silky- 

 fibrillose, violaceous-white or grayish-tvhite, margin at first incurved. 

 FLESH thickish on disk, concolor. GILLS adnate, thickish, nar- 

 now, heliotrope-purple to deep lavender at first, at length cinna- 

 mon-browu, close, obscurely transversely rivulose, edge minutely 

 crenulate. STEM 3-6 cm. long, short and rather stout, 6-12 mm. 



