30 American Boletes 



pale-yellowish-brown, 7.5-9.5 X 2.5-3.5 a; stipe short, thick, 

 subequal or enlarged below, white or pale-yellow, dotted with 

 pinkish-brown droplets which beqome darker on drying, solid, 

 white within, 2.5-5 cm. long, 1-1.5 cm. thick. 



Extremely common in open woods, especially near conifers, 

 throughout temperate North America and also found at high 

 elevations in the Blue Mountains, Jairiaica. Edible. 



2. RosTKOViTES SUBAUREUS (Pcck) MurriU 



Pileus thin, convex to expanded, sometimes unibonate, 5-10 

 cm. broad; surface very viscid, yellow, often dotted or streaked 

 with bright- rfed, dingy with age, sometimes spotted from the 

 drying of the gluten ; margin slightly tomentose or appendiculate 

 when young,; context comparatively thick, fleshy-tough, pale- 

 yellow, pinkish-gray when wounded, taste mild; tubes adnate, 

 scarcely decurrent, plane in mass, bright-yellow to duU-och- 

 raceous, flecked with yellowish, exuding drops which blacken 

 with age, mouths rather large, angular, edges obtuse; spores 

 oblong-ellipsoid, smooth, ochraceous-ferruginous, 8.5-1 1 X 4-5 Mi 

 stipe slender, tapering upward, yellow, darker toward the base*, 

 covered with numerous brownish or reddish-brown glandular 

 dots which blacken with age, solid, yellow within, 4-7 cm. long, 

 4-8 mm. thick. 



Common in woods and wood borders, especially near conifers, 

 throughout eastern North America. Edible. 



3. RosTKOViTES HIRTELLUS (Pcck) Murrill 



Pileus broadly convex, subcespitose, 5-10 cm. broad; surface 

 soft, viscid, golden-yellow, adorned with small tufts of hairs or 

 fibrils; context pale-yellow; tubes adnate, of medium size, 

 becoming dingy-ochraceous, mouths angular; spores pale- 

 ochraceous-brown, 9-10 X 4 m; stipe stout, equal, glandular- 

 dotted, yellow, 4-7 cm. long, 0.8-1.2 cm. thick. 



Occasional in sandy soil under pines in Connecticut and New 

 York. 



6. BOLETUS (Dill.) L. 



Hymenophore annual, terrestrial, centrally stipitate; surface 

 viscid, glabrous or scaly; context fleshy, white or yellowish; tubes 

 adnate, small, angular, yellowish, covered with a whitish veil; 

 spores oblong-ellipsoid or rarely globose, smooth, yellowish-brown; 

 stipe solid, annulate, often glandular-dotted. 

 Surface glabrous. 



Stipe glandular-dotted. 



Stipe not at all reticulate. 1. B. luleus. 



