CRYPTOGAMIA. FUNGI. Boletus, 
287 
In damp places the fructification is very frequent, and has often an ex¬ 
tremely elegant appearance, hanging in inverted cones and other shapes. 
The sinuses vary from yellow to orange, or a bright red brown. The 
whole fructification often forms a circle from one to six or eight inches in 
diameter, surrounded with an outer substance tender and pithy or cot¬ 
tony, of a pale brown. The upper part is commonly clothed with a white 
mucor. This pithy substance, without fructification, is often found by 
itself, and is very dry; whence the English name of Dry Rot; yet, as 
the fructification is seldom without drops of water resembling tears, the 
Latin name lachrymans has been given. Sowerby. 
(Weeping Boletus. Dry Rot. Bol. lachrymans. Sowerby. Dicks. Purt. 
Merulius destrucens. Pers. E.) On decaying wood in cellars frequent. 
Not uncommon on gates and posts exposed to the weather, but in such 
situations it does not spread much. Mr. Woodward. 
Much too common in England, taking possession of the bond timber in 
houses, and often attached by the back under stair-cases, &c.* 
Bol. versi'color. (Linn.) Tubes white : pileus striped with differ¬ 
ent colours. 
Bol. acaulis , fasciis dicoloribus 3 ports alhis. Linn. 
Bidl. 86— Schaeff. 268 and 269— Bolt. 81— Wale. n. 9— Battar. 35. A .— 
(Sowerby 229. E.) 
Pores very minute: tubes very short, wearing out with age. Mr. Stack- 
house. Tubes very short. Pores circular or angular, varying in size. 
Pileus thin, velvety, striped in concentric circles of various colours. This 
plant is very common. In its first stages of growth the pores are upper¬ 
most, in time it quits its attachment by the pileus and reverses itself, as 
explained in the account of Ag. quercinus. 
(Concentric-striped Boletus. Bol. versicolor. Bull. Huds. Lightf. 
Pers. Purt. Bolt. Schaeff. Hook. Bol. multicolor. Schseff. E.) On trees, 
rails, and stumps. P. 
(2) Tubes brown. 
Bol. cuticula'ris. (Bull.) Tubes dark brown, long: pores rich 
yellow brown: pileus dark red brown, semi-circular, very uneven. 
Bull. 462. 
Tubes long, darker brown than the flesh. Pores minute, regular, rich yellow 
brown, when turned sloping to the light exhibiting silvery reflections like 
the pile of velvet. 
* (Effects nearly similar are sometimes produced by one or two other species of fungi; 
as B. medulla-yams , and B. hydridus , of Sowerby, 289. The best, and indeed only 
certain method of preventing this serious evil, is to secure a free circulation of dry air 
about the timbers and floors of houses. Wherever the dry rot may have commenced its 
ravages, or even made considerable progress, it may be checked and eradicated by the 
following application. After having carefully removed all the parts affected, and 
brushed them over with a hot lime wash, take four pounds of copperas, which dissolve 
in four quarts of water in an iron pot; and with this solution brush over all the infected 
parts twice. It is well known another kind of dry rot originates in timber being felled at 
improper seasons, or injudiciously prepared, in which case, instead of hardening into a 
compact texture, being full of sap, which evaporates, the pores never close, and the 
whole soon becomes liable to internal decay. E.) 
