128 C. H. Kaufman 



CoPRiNUS ATRAMENTARius Fr. Infrequent, Tolland. On 

 the ground. 



CoRTiNARius ALBOVIOLACEUS Fr. (Inoloma). Frequent. 

 Leal. In alluvial soil along streams. 



CoRTiNARius ALUTACEOFULvus Britz. (Telamonia). Infre- 

 quent. Leal, Tolland. On moist, mossy ground, or on mosses 

 under spruce. 



This is to be considered as a segregate of C. hivelus Fr. It 

 differs from its nearest relatives like C. hivelus, C. rusticus 

 Karst., and C. laniger Fr. because of its almost spherical spores, 

 which measure 6-7.5 x 5-6 /jl. Furthermore, C. bivelus and C. 

 laniger have a distinct odor according to Fries. This quartet of 

 species has presented considerable difficulty, but an accumulation 

 of data makes it possible to distinguish three of them as occur- 

 ring in this country. C. alutaceofulvus occurs also in the Adiron- 

 dack Mountains under spruce. In Overholts's list I referred 

 a collection of what is probably this species, to C. rusticus. 



CORTINARIUS ANOMALus Fr. (Dermocybe). Frequent, Leal. 

 In moist debris and leaves, under pine and spruce. 



CORTINARIUS ANGULOsus Fr. (Hydrocybe). Infrequent. 

 Leal. Under conif.ers. This is a firm plant, which, like its near- 

 est relatives C. isahellinus and C. renidens, becomes ochraceous 

 on losing moisture; from both of these it differs in its spore 

 characters and habit. 



CORTINARIUS ARQUATUS Fr. (Bulbopodium). Rare. Leal. 

 Under spruce and fir. 



This is apparently distinguished from the larger C. atkin- 

 sonianus by the weak violaceous colors, the broad gills, and the 

 peculiar violaceous base of the stem, which, as Fries remarks, 

 is not itself bulbous or marginate, but is surrounded and en- 

 larged by the volva-like remnant of the veil. Our Colorado 

 specimens were not strikingly volvate, but agree well with 

 Ricken's account and his spore-size, 12-15 x 7-8 At. Other Euro- 

 pean notices agree in giving the spore-size 10-12 fx long. But 

 no one except Ricken has given us a critical study of it since 

 the time of Fries. It is of course possible that two species occur 

 in Europe. 



