Denniston—Russulas of Madison and Vicinity . 
85 
Characters \ ^ eus: smooth and shining, darker at center, dark 
of dried J olive § Teen or hronze green. Margin entire. 
• j Gills: stramineus. 
^ * i Stem: longitudinally wrinkled, whitish. 
Habitat. Rich oak woods on ground. 
Locality. Blue Mounds. 
Edibility. Taste mild. 
R. pectinata Fr. 
Pileus: convex, then flat or concave; smooth, ochraleucus to 
ferrugineus, darker at center; margin, thin, striate tubercu- 
late, at first infiexed. 6-8 cm.; taste, slightly pungent, 
smell, soapy. No changes. 
Gills: free, broad and rounded anteriorly, subcrowded, equal, 
white. 
Stem: 3-6 cm. long, l%-2% cm. thick, rigid, equal or ventri- 
cose; smooth or pulverulent, white; spongy when old. July 
and August. 
Spores : ellipsoidal or globose, 7x7/*,, 7x9/*,. 
Characters f Pileus: ferrugineus, thin, pectinate. 
on which j Stem: slender, white. 
identification • Gills: rounded anteriorly. 
is made. [ Odor not unpleasant. 
Characters \ ^ eus: latericius or yellowish, darker in center; 
n . • . j very thin, striate almost to center, 
o ! : yellowish white. 
[Stem: stramineus, slightly roughened. 
Habitat. On ground in grass under oaks along road. 
Locality. Madison, Blue Mounds. 
Edibility. Unpleasant in flavor. (Mcl.) 
