Mycological Flora of the Rockies 139 



In the mountains of northwestern United States, the darker form, 

 which is probably C. atrovirens Kalchb., occurs. It is surprising 

 that these are not known in the eastern part of the country. 



CoRTiNARius PERCOMis Fr. (Phlegmacium). Infrequent, 

 Leal. Under spruce and fir. 



The distinct, penetrating, sweet-aromatic odor is one of its 

 characteristics. It is related to C. cliduchus Fr., and Ricken 

 has apparently confused the two species as they were conceived 

 by Fries. Unfortunately, Fries did not mention the odor for 

 either species, but he limits C. percomis to pine and fir forests, 

 and C. cliduchus to beech and oak. He also makes it clear that 

 in C. percomis, the color of the flesh and gills is pale yellow, 

 citrin- or sulphur-yellow, and that the other parts of the plant 

 are flavescent; in C. cliduchus the colors are darker, "luteus" to 

 "fulvous." My collections, placed under C. percomis, all tended 

 to the paler group of colors. The spores measure 10-12 (13) x 

 5-6.5 (7) fx. 



Cortinarius pinetorum (Fr.) comb. nov. (Inoloma). 



Cortinarius argentatus var. pinetorum Fr., Monogr. Hymen. 

 Suec, I. 46. 1851. Leal. Under conifers. 



This appears to be the Fresian form of C. argentatus occur- 

 ring under conifers. It is quite close to the form described in 

 Agaricaceae of Michigan, I. 381, under C. argentatus. There 

 is a peculiar lack of constancy in the width of the gills; some- 

 times they are distinctly narrow, sometimes medium broad; 

 likewise the spacing varies, the narrow gills are crowded, the 

 others tend to be subdistant. Forms under pines in Michigan 

 showed the same variation. The. typical C. argentatus is larger 

 and occurs in oak woods. 



Cortinarius punctatus Fr. (Telamonia). Rare, Leal. 

 Under conifers. 



This I consider form (B) of the Monographia of Fries. The 

 series of species and forms to which C. punctatus, C. glandicolor 

 and C. uraceus (stout form) belong, is a difficult Cortinarius 

 problem, fully recognized by Fries, who, however, did not hand 

 down to us the spore records. Had he been able to do this, a 

 good deal of the puzzle might be open to solution. C. punctatus 



