Mycological Flora of the Rockies 135 



soon "avellaiieoiis," finally rusty-brown, edge minutely crenulate. 

 Stem 4-9 cm. long, 10-20 mm. thick at apex, stout, often taper- 

 ing upward from a clavate base, sometimes subequal and longer, 

 sometimes with a large oval bulb and shorter, bulb up to 30 mm. 

 thick and often abruptly short-pointed below,, firmly stuffed to 

 hollow, terete or compressed, at first tinged violaceous within 

 and without, apex at first flocculose-furfuraceous and soon white, 

 elsewhere covered by the thin, viscid, appressed, suhconcentric, 

 grayish-lutescent patches from the glutinous universal veil. Odor 

 and taste mild. Spores broadly oval to subglobose, subacute 

 at one end, thick walled, under oil-immersion with interrupted 

 ridges on surface so as to appear subreticulate, pale rusty in 

 microscope, 8-10 x 7-8.5 jjl. 



Gregarious. Leal, Colorado. Under conifers in mountain 

 forests. August. 



This differs from C. salor Fr., to which it is related, by its 

 dull or sordid hues, by its close gills, stuffed to hollow stem and 

 its habitat under conifers. It is also apparently related to C. 

 emunctus Fr., but no reliable microscopic data are at hand for 

 that species. Britzelmayr's species C. griseolilacinus and C. 

 suhflexuosus are not sufficiently described. This species was very 

 abundant over a small flat at the base of the slopes, under 

 spruce and fir. When very young, the stem is violet within and 

 without, but quickly changes. A few hours after it is picked, 

 the pileus changes entirely to ''buffy-olive" (Ridg.), and in 

 large specimens its surface is covered with numerous spot-like 

 floccose scales. 



CoRTiNARius iLLUMiNUS Fr. (Hydrocybe). Infrequent, Leal. 

 Gregarious under spruce and fir. 



Fries notes that this is difficult to distinguish because its char- 

 acteristics are not prominent. He reports it from both frondose 

 and conifer woods. The plants I have referred here possess gills 

 with an unusual shade of color, soon "cinnamon-rufous" to 

 terra cotta" (Ridg.). Its stems are rather long-attenuate up- 

 wards and subventricose downwards, with a short abruptly 

 attenuate base which is often decumbent, soon hollow. It is 

 related to C. armeniacus Fr., but the stems become sordid to 



