230 BOTANICAL GAZETTE [SEPTEMBER 
OBSERVATIONS ON Cortinarius rubipes, sp. nov.’ 
In a previous paper (14) I pointed out that the members of the 
genus Cortinarius were so constantly found in limited areas, and 
some species in such close proximity to certain trees, that it seemed 
likely that there was some connection. This last summer an effort 
was made to find out to what extent this might be true. The season 
was wet during the early summer, and although one finds few 
Cortinarii as a rule before August, several did occur, and one of 
Fic. 1.—Cortinarius rubipes, sp. noy.—Left hand sporophores show the mar if 
rootlets and humus with strands of mycelium projecting above; right hand indiv ae 
shows the roots with the short mycorhizal branches and the mycelial strands which 
are attached to the base of the stipe-—Photographed by the writer. 
these proved to be favorable for my purpose. It not only showed 
beautifully its connection with the tree roots, but turned out to be 
an undescribed species of Cortinarius. 
It was found July 4, 1905, on the south slope of a smal 
along the Huron River, near Ann Arbor, in a layer of humus ee 
forest leaves. This species, as is indeed true of some other fleshy 
fungi, is characterized by its brick-red mycelial strands and ag 
By removing the surface soil it was possible to see the brick-re* 
strands. intertwining with the rootlets apparently in all directions: 
For description in full, see 8th Report Mich. Acad. Sci. 1906. 
] ravine 
d 
