328 THE AGARICACEAE OF MICHIGAN 



easily made out; in others, e. g. C. mucifluus, the thick layer of the 

 universal veil is cracked and torn crosswise, and the resultant bands 

 or rings arc rather marked and persistant, while in still other cases 

 I lie si cm is peronately but very thinly sheathed. Because of their 

 great variability, especially in color, which varies with habitat, 

 weal her. age, etc., the species of this group have as yet uncertain 

 limits and are differently interpreted by different authors. 



309. Cortinarius mucifluus Fr. (Edible) 



Epicrisis, 18:50-38. 



Illustrations: Fries, Icones, PL 148, Fig. 1. 

 Cooke, 111., PI. 740 (fresh condition). 

 Cooke, 111., PI. 738 (older stage, as G. collinitus). 

 Gillet, Champignons de France, No. 206 (as G. collinitus). 

 Ricken, Die Bli'itterpilze, PI. 34, Fig. 1 (as G. collinitus). 

 Michael, Fuhrer f. Pilzfreuude, Vol. Ill, No. 85 (as G. col- 

 li nitus). 

 X. Y. State Mus; Rep. 48, PI. 13, Fig. 1-6 (as C. collinitus). 

 Plate LXIII of this Report. 



PILEUS 3-8 cm. broad, at the very first subglobose, then cam- 

 panulate-convex and margin incurved, finally campanulate-expanded 

 to plane, obtuse, glutinous when moist, the gluten derived from the 

 very I hick gelatinous pellicle varying in color from whitish when 

 young to straw-yellow, orange-yellow or tawny-fulvous, sometimes 

 stained with rusty or sulphur hues, shining when dry. FLESH 

 pallid or stained in age with yellow or rust color. GILLS at first 

 pallid or grayish-white (caesious), then clay color to rusty-cinna- 

 mon, adnate to subernarginate, medium broad, close. STEM 6-12 

 cm. long, 7-12 mm. thick, cylindrical or tapering downward, rather 

 stout from the first, rigid, spongy-stuffed, at the very first whitish 

 and covered by the thick gelatinous layer of a universal veil, which 

 cracks transversely, forming scaly, thick, sometimes squarrose hands 

 of dried gluten, especially below, soon becoming discolored and then 

 yellowish, rusty or tawny, terminating above with the discolored 

 Cortina in the form of a collapsed ring. SPORES 10-13x6-7 micr. 

 (rarely up to 14.5 micr. long), almond-shaped, tuberculate, in- 

 equilateral-elliptic, rusty-cinnamon in mass. BASIDIA 4-spored, 

 ::<! 11* x 9-10 micr. ODOR and TASTE not marked. 



Gregarious. !n low, rich ground of coniferous or frondose woods, 



