84 ELEVENTH REPORT. 



44. RUSSULA U^'CIALIS Pk. 



(The inch-wide Riissula.) 



Ilhistrations: X. Y. State Miis. Ikill. 116. PI. 107, fig. 7-12. 



PiLEUs 2-5 cm. broad, thin, rather fragile, convex then expanded-depressed, 

 ■pink or bright flesh-color, iinicolorous, the rather adnate pellicle slightly 

 separable, shghtly viscid when moist, ])niino.>^e and pulverulent when drv, 

 margin not striate till old. Flesh white, pink under the pellicle, unchanged. 

 Gills pure ivhite, hardly changed, rather broad, broadest in front, narrowed 

 behind and adnate, subdistant or moderately close, distinct, entire on edge, 

 few forked, interspaces venose. Stem white, rarely tinged }:»ink, rather 

 short, 1-3.5 cm. long, 4-10 mm. thick, spongy-stuffed, equal, glabrous. 

 Spores white in mass, subglobose. echinulate, 7-8 micr. Taste mild. Odor 

 none. 



Gregarious. In oak woods of southern [Michigan. .Tuly and August. 

 Quite common in places. 



The persistently white gills and spores, the mild taste, uniform jjink color 

 and size, distinguishes this Russula. It is sometimes more than an inch in 

 width. 



45. Russula sericeoxitexs sp. xov. 



(The silky-shining Russula.) 



PiLEUs 4-6 cm. broad, very regular, rather thin, convex then j^lano-depresed* 

 dark violet-purple or dark blood-red tinted purplish, disk sometimes livid" 

 blackish the separable pellicle slightly. viscid when moist, not striate or sub" 

 striate in age, surface with a silky sheen. Flesh white, thin on margin? 

 unchanged, ])urplish under the pellicle. Gills white, subdistant or medium 

 close, becoming flaccid, moderately broad, broad in front, narrowed behind, 

 dry, equal, few forked near base, interspaces venose. Stem white, equal 

 or thickened at apex, spongy within, unchanged, glaljrous, even or obscurely 

 rivulose, 3-5.5 cm. long, 1 cm. thick. Spores white in mass, globose, echinu- 

 late, 6-7.5 micr. Taste mild. Odor none. 



Usually solitary. In mixed woods of hemlock, maple and yellow birch in 

 northern Michigan. July and August. Not uncommon. 



Its thin ]3ileus is flexible at maturity. The silky sheen and regular pileus 

 are ciuite. characteristic. The cap has the color of Cooke's figures of B. 

 Queletii Fr., R. drimeia Cke. and R. purpurea Gill. These three, including 

 R. expollens Gill., have been placeel together by some modern authors as one 

 species, characterized by ''a pruniose, violaceus, decolorate stem, and very 

 sharp taste." The taste is said to be so pejjpery that even when the color 

 is washed by rains they can be recognized l)y this character. All of the four 

 have violet or reddish on the stem. Our specimens all had a white stem and 

 an impeachable mild taste. Those Avho place the above four species together 

 under one, on the ground that the difference in the color of the gills and spores 

 is not sufficient distinction, Avould probably also include our species by 

 neglecting the difference in taste. With our ])resent knowledge, it is however, 

 necessary to keep it distinct. 



46. Russula ixtegra Fr. 



(The entire Russula.) 



Pileus 5-10 cm. Ijroad, firm, soon fragile, discoid, convex or campanulate 

 then piano-depressed covered with a viscid separable pellicle, thin on the mar- 



