180 



STUDIES OF AMERICAN FUNGI. 



September, 1899, I found it quite common in the Blue Ridge 

 mountains of North Carolina, at an elevation of between 4000 and 

 5000 feet. It grows on the ground in mixed woods. The plants 

 are 5-8 cm. high, the caps 5-7 cm. broad, and the stem 6-10 mm. in 

 thickness. 



The pileus is convex, sometimes becoming nearly plane, and it is 

 quite thick in the center, more so than the granulated boletus, while 

 the margin is thin, and when young with a minute gray powder. 

 The margin often becomes upturned when old ; the cap is viscid when 





* 



FKJURE 172. Boletus punctipes. Cap viscid when moist, reddish brown, pink, yellow, 

 tawny, etc., tubes yellowish, stem dark punctate (natural size). Copyright. 



moist, dull yellow. The tubes are short, their lower surface plane, 

 and they are set squarely against the stem. They are small, the 

 mouths rounded, brownish, then dull ochraceous, and dotted with 

 glandules. The stem is rather long, proportionately more so than in 

 the granulated boletus. It distinctly tapers upwards, is "rhubarb 

 yellow," and dotted with glandules. This character of the stem sug- 

 gested the name of the species. The spores are 8-10x4-5;*. 

 Figure 172 is from plants (No. 4067 C. U. herbarium) collected at 

 Blowing Rock, N. C. It is closely related to B. grauulatiis and by 

 some is considered the same. 



