CLASSIFICATION OF AGARICS 145 



not striate ou margin, surface glabrous or subpruiuose, purplish- 

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

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

 sordid, rather close, adnexed, moderately broad throughout, thick- 

 ish, often forked, shorter ones usually intermingled, interspaces 

 venose. STEM white or rosy-tinged, soon ding}^ olivaceous-yellow- 

 ish where handled, 5-7 cm. long, 1.5-2.5 cm. thick, firm, subventri- 

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

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

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

 able iDith, age or when drying. 



Scattered. Hemlock and coniferous or mixed woods of 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 yelloAV gills (luteis), and with this char- 

 acter it has seldom been found. Romell has never seen such a plant 

 in Sweden and unites A', olivacea and A*, .reiaiitpelina under the 

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

 last name is quite common about Stockholm, and as far as I could 

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

 that we can drop the name R. olivacea from our list of American 

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

 Our plant is near R. squalida Pk. as the latter is diagnosed in this 

 paper. It differs, however, from that species in the more firm con- 

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

 erous regions. R. squalida is soft and flexible in age. 



122. Russula squalida Pk. (Suspected) 



N. Y. State Mus. Rep. 41. 1S8S (as R. atropurpurea Pk.). 

 N. Y. State Mus. Bull. 116, 1907. 



Illustration : Kauft'man, Mich. Acad. Sci. Rep. 11, 1909. 



PILEUS 7-11 cm. broad, convex then piano-depressed^ 

 firm, soon subflaccid, margin even ivheii young, becoming 

 slightly tuber cular-striate in age, the pellicle continuous but 

 rather adnate, not easily separable, subviscid in wet weather, 

 soon dry and then pruinose-velvety, even, color varying from 

 reddish-purple to pallid and mixed with olivaceous, tan 

 or ochraceous, often shades of all these colors are seen in 

 one cap, opaque and dull, not shining. FLESH white, thick on 



