Murrill: Boletaceae of North America 



5 



Spores rosy or flesh-colored ; stem solid, usually 



reticulated. ■ 9. Tylopilus. 



Spores ochraceous to yellowish-brown. 



Mouths of tubes red or reddish-brown, tubes 



yellowish within. 10. Suillellus. 



Mouths of tubes never uniformly red nor 



reddish-brown, tubes unicolorous. n. Ceriomyces. 



I. Boletinus Kalchbr. Icon. Sel. Hymen. Hung. 4: 52. 

 pi 31. 1877 



Euryporus Quel. Ench. Fung. 163. 1886. (Type species, Eu- 



ryporus cavipes (Opat.) Quel.) 

 Boletopsis P. Henn. Engl. & Prantl, Natur. Pflanz. I 1 **: 194. 



1899. Metonym. 



Hymenophore annual, terrestrial or rarely epixylous, centrally 

 stipitate ; surface dry, minutely silky to fibrillose or squamose : 

 context whitish or yellowish, fleshy or spongy; tubes large, 

 shallow, elongated, tough, not easily separating, radiately ar- 

 ranged, adnate or slightly decurrent, yellowish, covered with a 

 veil: spores elongated, smooth, yellowish-brown to purplish- 

 brown, sometimes with greenish tints : stipe more or less annulate, 

 spongy or hollow within. 



Type species, Boletus cavipes Opat. 



Stipe hollow; pileus tawny-brown, fibrillose-squamulose. i. B. cavipes. 

 Stipe solid. 



Pileus whitish or grayish, slightly squamulose. 2. B. grisellus. 

 Pileus yellow or yellowish. 



Pileus 5 cm. or less broad. 3. B. Berkeleyi. 



Pileus 10 cm. or more broad. 4. B. appendiculatus- 

 Pileus red or reddish, conspicuously squamose. 



Spores purplish-brown ; scales scattered. 5. B. spectabilis. 



Spores ochraceous-brown ; scales dense. 6. B. pictus. 



i. Boletinus cavipes (Opat.) Kalchbr. Icon. Sel. Hymen. Hung. 

 52. pi. 31. 1877 



Boletus cavipes Opat. Comm. de fam. fung. Bolet. n. 1836. 

 Boletus ampliporus Peck, Ann. Rep. N. Y. State Mus. 26 : 67. 



1874. (Type from North Elba, New York.) 



This species occurs sparingly in this country in New England 

 and New York, usually in swamps or damp mossy places. It 

 was at first referred to B. subtomentosus by Peck. 



