REPORT OP THE STATE BOTANIST 1901 973 



then white, but after exposure they soon become brownish and 

 finally assume the color of the spores, which is brown tinged 

 with purple. They are not at all or only slightly rounded at 

 the stem and the edges in the mature plant often remain white. 

 The stems are rather long and flexuous, hollow, white, marked 

 with short parallel longitudinal lines at the top and sometimes 

 with reddish stains at the base. 



The cap is 1.5-3.5 inches broad; the stem 3-5 inches long and 

 2-5 lines thick. The plants grow singly or in tufts about old 

 stumps and appear in September. They are very good as an 

 edible mushroom. The typical form has also been found to be 

 edible by one of my correspondents but I have had no oppor- 

 tunity to try it. 



Boletus bicolor Pk. 



TWO COLORED BOLETUS 

 PLATE 81, FIG. 6-11 



Pileus convex, firm, becoming softer with age, dry, glabrous 

 or merely pruinose tomentose, dark red becoming paler and 

 sometimes spotted or stained with yellow when old, flesh yel- 

 low, not at all or but slightly changing to blue where wounded, 

 taste mild; tubes nearly plane in the mass, adnate, short and 

 yellow when young, longer and ochraceous when mature, their 

 mouths small, angular or subrotund, slowly and slightly chang- 

 ing to blue where wounded; stem 1 nearly equal, firm, solid, dark 

 red, usually yellow at the top; spores pale ochraceous brown, 

 narrowly elliptic or subfusiform, .00G4-.0005 of an inch long, 

 .00016-.0002 broad. 



The two colored boletus has the cap and stem dark red or 

 Indian red and the tubes and flesh yellow, which is suggestive 

 of the name applied to it. The cap becomes paler in color and 

 softer in texture as it becomes older, and it often becomes yel- 

 lowish on the margin and spotted or stained with yellow else- 

 where. The surface sometimes cracks in small areas revealing 

 the yellow flesh beneath. The tubes are at first short and 

 bright yellow but they become longer and assume orchraceous 

 hues as they grow older. The mouths are small and the dis- 



