284 
CRYPTOGAMIA. FUNGI. Boletus. 
Bol. calce'olus. (Bull.) Tubes buff colour, pores very small: pileus 
deep buff to chesnut, hollowed in the middle, thin and waved at 
the edge. 
Bull. 46— Bol. elegans, cliesnut-coloured pileus ; ib. 445. 2, huff pileus ; ib. 
360, an old plant, which, were it not for the decurrence of the pores on the 
stem , would also represent Bol. polyporus in its old and woody state. 
Tubes decurrent, the longest near a quarter of an inch. Pores buff-colour, 
small, but not all of the same size. 
Pileus deep buff to chesnut-colour, firm and hard to cut, like a cork, hol¬ 
lowed near the insertion of the stem, thin and waved or curled at the 
edge, two to four inches over. 
Stem lateral, sometimes approaching to central, tough, white, conical, 
gradually losing itself into the pileus, and becoming covered by the pores, 
so that it is difficult to decide its length, which however may be con¬ 
sidered as near an inch in the larger specimens, and one-fourth to three- 
eighths diameter. The plant is much crowded in its growth, so that the 
substance of one often unites with the substance of those adjoining it. 
(Slipper Boletus. E.) Bol. elegans. Bull. 46. Stump of an ash-tree, 
rick yard, Edgbaston. June. 
*Bol. latera'lis. (Bolt.) Tubes yellow, very short: pileus dead 
yellow, thin, smooth : stem yellow. 
Bolt. 83— Battar. 34. A — FI. Ban. 1075. 1 . is very like the plant, but the 
pores are white ; possibly an omission in the colouring. 
Tubes about a line in length. Pores circular, so minute as not to be dis¬ 
cernible by the naked eye. 
Pileus yellow, smooth, flat, very thin, leather-like, one to two inches in 
diameter. 
Stem lateral, dull yellow, gradually spreading out at the top so as to form 
the pileus, half to near one inch long, a quarter of an inch diameter. 
Root hard, black. Bolton. 
(Lateral Small-tubed Boletus. E.) On the trunk of a fallen willow. 
Aug. 
Stemless. 
(1) Tubes white. 
Bol. subero'sus. (Linn.) Tubes white, pointed: pores irregular: 
pileus white, convex, smooth, thin. 
Bolt. 162—Bull. 482. F. 
Bol. acaulis, pulvinatus, albus, Icevis, poris acutis diffbrmibus. 
Snowy white ; soft as a sponge. Linn. 
Pileus arched, thin, wrinkled, sometimes marked with zones, grey white, 
very watery when young. Bulliard. Tubes of unequal lengths. Pileus 
white, downy when young, smooth when old, but made uneven by rising 
bunches. Bolton. This is known by its perfect resemblance to cork. 
Lobes thick. Pores irregular in their shape. Bull. C. E. G. are redder 
than I have seen it. Mr. Stackhouse. 
(Cork Boletus. Bol. suberosus. Sowerby. Bolt. Bull. Hook. Purt. E.) 
Trunks of ash trees in Westmoreland, common. Plentiful near Bath, on 
stumps of trees. Mr. Stackhouse. 
