26 ACOTYLEDONS. — -tUNGI. Bo/cff/S. 



margin white and downy, veins forming as it were large pores. 



JMerttlius destriieiis, Pers. p. 496. Boletus lac/iri/mansy 



JViik. p. 321. Sow.t.W'S. 

 Hab. On decayed wood, in cellars and outhouses, and sometimes on 



posts exposed to the weather. On the wood of churches and 



houses, Hopk. 

 The pores contain water. This is the dni-rot, from which buildings of 



all kinds, especially ships, have suffered so much. Mr. Sowerby 



recommends ventilation a!id avoiding to build in damp situations as 



the best way to guard against it. 



B. BoLETOiDEi. Membrane or receptacle of the friiclljication 

 Jorming tubes, nllnng and compressed or rounded, sometimes 

 prominent, 



20. D.EDALEA. 



Pileus (dimidiate) between coriaceous and corky, reticulated 

 with subporiforni or oblong apertures beneath. (Intermediate 

 between Merulius and Boletus.) 



1. D. g?iercina, coriaceous pale brownish, pileus slightly wrin- 

 kled glabrous, apertures large, their interstices branched and 

 sinuated. Pers. p. 500. ylgaricus quercinus, IJgktf.p. 1028, 

 Sow. t. 181. 



Hab. Trunks of various trees and decayed wood, frcqucntj all the year 

 round. Light/., Jlopk. 



27. BOLETUS. 



Pileus varying in its form. Tubes and pores rounded, entire, se- 

 parated. 



A. Pileus with the tubes beneath distinct from one G?iothcr 

 (Fistulina Bull, and IViih.). 



1. B. hepaticus, fleshy red dimidiate, tubes slender unequal free 

 yellowish. Pers. p. 302. Sow. t, 56. Light/, p. 1034. 

 Fistulina hepatica. With. p. 302. 



Hab. On the trunks of hollow trees. Aug., Sept. Light/. 



B. Pileus ivith the tubes united. - 

 * Stipes coitral '. 



2. B. auranliacus, tubes whitis^h, pileus red orange, stipes 

 ■ whitish rough. With. p. 305. Sow. t. IW. B. aurantius, 



Pers.p.o04. 

 Hab. Woods, occasionally. June, July. Bothwell wood, and fre- 

 quent in a small wood near Carmyle, Glasg., Hopk. 



3. B. bovinus, tubes pale yellowish brown unequal in length, 

 pileus brown or olive clammy, stipes thick pale brown with 

 lusty'stains. JVith. p. 306. Eol. scabcr, Soia.t.\75. 



" III this genus likewise I follow Withering's characters and names, with 

 few exceptions. 



