CLASSIFICATION 357 



B. f.avus. — Cap 3-4 in. across, expanded, smooth, yellow, viscid, 

 flesh pale yellow, unchangeable ; pores large, angular, tubes about 

 I in. long ; stem 3-4 in. long, stout, dingy yellow, netted above 

 the fragmentary ring. 



Distinguished amongst the yellow species by the stem being 

 covered with a vague network above the ring. 



In woods. 



B. fiavidus. — Cap i|-2| in. across, umbonate, then expanded and 

 almost plane, dingy yellow ; tubes about J in. long, running down 

 the stem, pores rather large, angular, dingy yellow ; stem 2-3 in. 

 long, slender, ring viscid. 



More slender than preceding species, and differing in the viscid 

 ring. 



In pine woods, swamps, etc. 



** Cap not viscid, densely downy or silky, ring absent. 



B. chrysenteron (PI. XXVII, fig. 3). — Cap 1-4 in. across, soon 

 expanded, minutely tomentose, brownish with a decided olive 

 tinge, becoming cracked and showing the red flesh in the cracks, 

 flesh showing a little blue when broken ; tubes yellow, then 

 greenish, pores angular ; stem fil^rous, yellow, stained with red. 



Perhaps our commonest species, known by the red colour of the 

 cracks in the dingy olive cap. 



In woods and pastures. 



B. siibtomentosHS. — Very closely resembling B. chrysenteron, 

 differing in the cracks in the olive cap being yellow instead of red. 

 This coloration depends on the colour of the flesh just below the 

 olive tomentum, hence in a section of the cap this hue is red in one 

 case and yellow in the other. 



In woods. 



B. stricBpes. — Allied to the t\\'o previous species, differing in the 

 presence of blackish stripes on the stem. 



In pine woods. 



B. crnentiis. — Cap 3-4 in. across, resembhng the three preceding 

 species, differing in the cap becoming red at once when bruised, 

 and in the tapering rooting stem, which also turns red when cut. 



On the ground under beeches. 



B. sa'dgnineus. — A species respecting which little is known. The 

 cap blood-red changing to red-brown, about 3 in. across ; tubes 

 yellow, blue when cut, stem yellow with crimson streaks. 



In woods. 



B. impolitns. — Cap 4-6 in. across, flocculose, pale yellow-brown 

 or tawny brown ; tubes nearly free from the stem, yellow ; stem 

 2-3 in. long, stout, yellow, red above. Flesh tinged, blue when 

 cut. 



In woods. 



