BOLETI OF THE UNITED STATES 145 
spores: pallid-ochraceous, oblong-fusiform, .0004 to .0008 in. 
long. 
Pileus 3 to 4 in. broad; stem 1.5 to 3 in. long. 
Compact soil. Ohio, Sud/vant. 
The species is said to be intermediate between Boletus 
scaber and B. edulis. From the former it differs in its re- 
ticulated stem, from the latter, in its larger tubes and from 
both in its stratum of tubes being remote from the stem. I 
~ have not seen it. 
VERSIPELLES 
Tubes at first white or whitish, minute, round, equal, 
forming a convex stratum free from the stem. 
The species of this tribe have their tubes typically free 
or nearly so. They are at first white or whitish and their 
mouths are not differently colored. The stem may be scab- 
rous or punctate-squamulose, but it is not reticulated with 
veins. Fries adds to the diagnosis here given, “ spores fer- 
ruginous, in number 74 umber.” But it is so evident that 
spore color is not available for grouping into tribes that I 
_have disregarded it. The Favosi differ from this tribe in 
having the tubes large, angular, unequal and adnate. We 
have no representatives of these unless Loletus sordzdus 
Frost is one. Morgan describes its pores as large and 
angular, but as they are nearly free I have placed the species 
with the Versipelles for the present. 
SECM DAC Ita setae Tot, ay a themes tues kei e iad B. alboater. 
SLEMsSOMe Ot Mele COLO. ay) ci i= a) ss Ffseseie ele seer cte ete I 
ESL CllOws at Le sbaScwern 9 65 aa eked ess os B. chromapes. 
Pes remenon wellows at thesbaSei ees +ce 5 sceeelec so He 2 
2. Margin of the pileus appendiculate ...... ....... B. versipellis. 
2, Nilevasridi TOE, Bho) NeWONGWILE lene eon banneocesnoe 3 
3. Stem scabrous or punctate-squamulose................ B. scaber. 
Be SLC IMC VC 1 Meu err eee NR tere oN Wn wc Ale ve oo lara gens : 4 
AEE NEIS! WinlterOr WAIILISIyso.eecrxs clos os. sis ete e-iktere © B. albellus. 
4. Pileus dark-brown .......... YES oe FANS gape g B. sordidus. 
