CLASSIFICATION OF AGARIl 



not striate on margin, surface glabrous or Bubpruinose, purplish 

 red to purplish-olive, disk olivaceous, variegated. FLESH compact, 

 whitish then dingy. GILLS creamy-white to creamj yellowish, tl 

 sordid, rather close, adnexed, moderately broad throughout, thi< 

 ish, often forked, Bhorter ones usually intermingled, interspa 

 venose. STEM white <>r rosy-tinged, soon dingj olivaceous-yellow- 

 ish where bandied, 5-7 cm. long, L. 5-2.5 mi. thick, firm, subventri- 

 cose or equal, spongy-stuffed, even or obscurely wrinkled, changing 

 where bruised to dirty ochraceous-broion. SPORES creamy-yellow- 

 ish, globose, echinulate, 9-10 micr. TASTE mild. ODOR d 

 able with ii(/< or \\ hen drying. 



Scattered. Semlock and coniferous or mixed woods ol the 

 Northern Peninsula. July and August. 



This has usually been referred to R. olivacea Fr. in this country. 

 In Europe, R. olivacea is a very much debated species. Fries' de 

 scription requires truly yellow gills (luteis), and with this char- 

 acter it has seldom been found. Romell has never seen such ;i planl . 

 in Sweden and unites /.'. olivacea and R. xeva <i under the 



name R. graveolens. The scries of color forms included under the 

 last name is quite common about Stockholm, ;iu<l as far as I could 

 see it is the same as our northern Michigan species. I assume, then, 

 thai we can drop the name /«'. olivacea from our list of American 

 Russulas, in which case our olive form goes into the present species. 

 Our plant is near It. sijimliiht I'k. as the latter is diagnosed in this 

 paper. Tt difi'ers. however, from that species in the more firm con- 

 sistency, in the stem being often reddish, and its habital in conif- 

 erous regions. /.'. squalicla is soli and flexible in age. 



122. Russula squalida Tk. Suspbi mi- 



N. V. Stale .Miis. Rep. M. L888 (as /.'. atropurpurea Pk. . 

 N. Y. State Mas. Bull. L16, L907. 



Illustration: Kauffman, Mich. Acad. Sci. Rep. LI, L909. 



PILEUS Til cm. broad, convex then piano-depressed, 

 firm, soon subflaccid, margin even when young, becoming 

 slightly tubercular-striate in age, the pellicle continuous but 

 rather adnate, no! easilj separable, subviscid in we1 weatl 

 noon dry and then pruinost velvety, even, color varying from 

 reddish-purple to pallid and mixed with olivaceous, 

 or ochraceous, often shades of all these colors are em 

 one cap. opaque and dull, qo1 shining. FLESB white, tl 



19 



