396 THE AGARICACEAE OF MICHIGAN 



***Gills at first yellowish, red or cinnamon, (Usually elegant 



plants.) 



401. Cortinarius cinnamomeus Fr. 



Syst. Myc, 1S21. 



Illustrations: Cooke, 111., PL 777. 



Oilier, Champignons de France, No. 204. 

 Michael, Fuhrer f. Pilzfreunde, II, No. 70. 

 Ricken, Die Bliitterpilze, PI. 47, Fig. 0. 

 Hard, Mushrooms, Fig. 239, p. 298, 1908. 

 Peck, N. Y. State Mus. Rep. 48, PI. 13, Fig. 7-14. 



PILEUS 2-4.5 cm. broad, campanulate-convex, obtuse or subuni- 

 bonate, umbo often vanishing, yellowish-cinnamon, yellowish-tawny, 

 etc., silky or minutely and densely scaly from the innate or ap- 

 pressed, yellowish fibrils, shining. FLESH pale citron or straw- 

 yellow, rarely deep-yellow, thin. GILLS adnate, varying to ad- 

 nexed-emarginate or scarcely subdecurrent, rather broad, close (not 

 truly crowded), cadmium-yellow, citron-yellow or cinnamon-yellow, 

 shining. STEM 3-8 cm. long, 3-G mm. thick, equal, often flexuous, 

 chrome to citron yellow when fresh, darker when handled, fibrillose, 

 stuffed, becoming tubular, olive-ciunamon-yellow within, attached to 

 a yellow mycelium. CORTINA citron-yellow, fibrillose. SPORES 

 short elliptical, smooth, 6-7.5x4-4.5 micr. (few 8x5 micr.) BA- 

 SIDIA 24 x micr., 4-spored. ODOR and TASTE mild. 



Gregarious or subcaespitose. On moist rich ground, very decayed 

 wood or mosses, in conifer regions, in sphagnum swamps, or more 

 rarely in frondose woods. Throughout the State, Marquette, New 

 Richmond, Ann Arbor, etc. August-October. Infrequent. 



This species is usually marked "common" by the writers of books 

 or lists; a statement which is correct enough if C. semisanguineus 

 and its forms are included. The segregated plant as described 

 above even with its variations is rarely common according to my 

 experience in Michigan and about Ithaca and North Elba, New 

 York. It may be more common in special localities. It is quite 

 variable and Fries says "innumerable forms have been set up by 

 authors." The colors and shape vary with the habitat, so that 

 sphagnum forms, e. g., have longer stems and shaded pilei deeper 

 colors. The spores of the American plant seem to be slightly smaller 

 than in those reported by Saccardo, Massee, Ricken, etc., and in 



