CLASSIFICATION OF AGARICS 351 



violaceous. STEM L-5 cm. long, LO-15 mm. thick, fleshy fibrous, solid, 

 violaceous above, bright yellow below, turbinate-bulbous, subglobose- 

 when old, bulb '' i cm. high and l cm. broad, violaceous. OOBTINA 

 bluish-gray. BPOBES Bubelliptical or globose, 8-10x7-8 micr., 

 \ errucose, tawny brown. 

 "Belated to C. glaucopus Schaeff." 



The description is adopted from the original. The plant was 

 found in Nebraska and I have QOl seen it. 



335. Cortinarius aleuriosmus Maire var. 



Bull, de la Boc. Myc. de France, Vol. 26, p. 22, L910. 



Illustrations: [bid, PI. 7. Pig. 4-5. 



Bicken, Die Biatterpilze, PI. 39, Pig. I. 



I'lLKl'S ."> m cm. broad, very compact, firm, broadly convex 

 alutaceous whitish ut first, soon dingy ochraceous-tan to russet-tan . 

 sometimes sordid tawny yellowish in age, glabrous, with a glutinous 

 ]>< llicle when moist or young, surface becoming reticulate-rivnlose 

 from the drying gluten, margin inrolled at first. FLESH thick. 

 white or with an evanescent violaceous tinge. GILLS adnexed, 

 narroWj crowded, caesious ut first li. e., pale livid-grayish), some- 

 times pallid, then rust y cinnamon, edge erose-serratulate. STEM 

 4-6 cm. long, stout, short, LO-20 nun. thick, solid, compact, white or 

 scarcely violaceous-tinged, fibrillose from the cortina, with a thick, 

 turbinate, marginate i>ult>. bulb nol depressed, white below and 



arising from white mycelium. BPOBES elliptical-al ad-shaped, 



minutely tuberculate, 10-12x5-6 micr. BASIDIA 30-35x7 micr.. 

 4-spored. ODOK and TASTE mild or slight. 



Bubcaespitose or gregarious. <>n the ground in frondose woods 

 of oak. maple, etc. Ann Arbor. August-September, [nfrequent. 



This is doubtless the species reported by Bicken under C. 

 aleuriosmus Maire. (See Biatterpilze, p. L36, No. 128). Both 

 Bicken's and my collections seem to be the same species, bu1 differ 

 from the description of the type, given by .Maire, in lacking the 

 ''bitter taste'* in the pellicle of the pileus, and in the slightly smaller 

 spores. Maire's species also had a distinct farinaceous odor and 

 no violaceous nor blue tints in the flesh and stem. The latter point, 

 however, is a variation easily overlooked. There is evidently a 

 series of closely related forms, differing slightly in the amount of 

 violet present and the presence or absence of a Blight odor and 



