REPORT OF THE BOTANIST. 81 
Boterus separans Peck, 
Pileus thick, convex, smooth, shining, sometimes deeply lacunose, 
brownish-lilac ; tubes plane or slightly depressed around the stem, 
at first white, closed and attached to the stem, then by the expan- 
sion of the pileus usually torn from it, small, subrotund, yellow or 
brownish-yellow ; stem solid, nearly equal, distinctly reticulated, 
dull-lilae ; spores .00055' long, .00022' broad; flesh white, unchange- 
able. 
_ Plant 3'-4' high, pileus 3’ broad, stem 6-10" thick. 
Grassy ground in open woods. Greenbush. August. 
This was mentioned in a previous report as a marked variety of 
B. edulis, but having observed it two years in succession, and 
finding its distinctive features quite constant, I am induced to 
consider it a distinct species. The dried specimens have a strong, 
disagreeable, acid-like odor. Little webby filaments may often be 
seen stretched across the space between the stem and the tubes 
that have been torn fromit. In dry weather this separation of the 
stem and the tubes does not always take place. 
Boetus arrriis Peck. 
Pileus dry, minutely tomentulose, even or slightly rugose, chest- 
nut-colored, soon fading to tawny or ochraceous, the cuticle some- 
times cracking into areas; tubes plane or convex, attached to the 
stem and sometimes depressed around it, at first white and closed, 
then yellow, small, unequal, angular or subrotund; stem solid, 
unequal, smooth, rarely reticulated at the top, pallid or tinged with 
dull red ; spores elliptical, .00035' long, .00016' broad; flesh white, 
unchangeable. 3 
Plant 2° high, pileus 2-3’ broad, stem 6’-10" thick. 
Grassy ground in open woods. Greenbush. July. 
At first sight this plant bears some resemblance to B. castaiieus. 
The stem is “usually ventricose or tapering toward the base ; some- 
times compressed at the top. It is seldom found uninfested by 
the larvee of insects. The margin of the pileus is sometimes revo- 
Inte. Like the next preceding species, it belongs to the section 
Edules. 
Bo.etus MODESTUS poe 
Pileus firm, convex, often irregular, dry, minutely tomentulose, 
yellowish-brown ; tubes nearly plane, attached and subdecurrent, 
pale ochraceous, angular and compound ; stem equal, brown, reti- 
culated with darker lines; spores elliptical, .0004 long, .0002 
broad ; flesh-gray or pinkish-gray. 
