136 NORTH AMERICAN FLORA 
[VoLUME 9 
ous or a little paler than the pileus, pinkish-gray at the apex, velvety at the base, solid, 
5-8 em. long, 1.5-2.5 em. thick. 
TYPE LOCALITY: North Carolina. 
HABITAT: In open deciduous woods. at sae 
DISTRIBUTION : New York to Georgia and Mississippi. 
3. CERIOMYCES Batt. Fung. Hist. A/. 29. 
Leccinum §. F. Gray, Nat. Arr. Brit. Pl. 1: 646. 1821. 
Tubiporus P. Karst. Rev. Myc. 39: 16. 1881. ; 
Krombholzia P. Karst. Rev. Myc. 39: 17. 1881. Not Krombholzia Rupr. 1842. 
Versipellis Quél. Ench. Fung. 157, 1886. 
Ixocomus Quél. Myc. Fl. Fr. 411. 1888. 
Xerocomus Quél. Myc. Fl. Fr. 417. 1888. 
1755. 
Hymenophore annual, (eecctenal centrally stipitate ; surface dry, rarely viscid, glabrous 
or variously ornamented: context usually white or yellow, sometimes tinged with certain 
other colors, very rarely poisonous; tubes free or adnate, small, cylindric, sometimes 
large and angular near the stipe: spores oblong-ellipsoid, smooth, ochraceous to yellowish- 
brown : stipe solid, except in one or two species, even or reticulate, exannulate. 
Type species, Cerionuzyces crassus Batt. 
Stem shaggy and lacerate, with reticulate furrows. 
Pileus dry, tomentose or reddish-pilose. 1. C. Russelliz. 
Pileus viscid, glabrous. : 2. C. Betula. 
Stem smooth or reticulate with veins. : 
Tubes white, not stuffed when young and not turning blue when 
wounded, colored at maturity with the yellowish-brown spores ; 
pileus glabrous (a few subtomentose species have whitish tubes 
when young). 
Stem smooth ; pileus white, smooth. 3. C. albellus. 
Stem reticulate. 
Pileus white, with deep chinks forming areolae. 4. C. frustulosus. 
Pileus gray, smooth. 5. C. griseus. 
Stem scabrous ; pileus smooth, rarely white. 
Stem conspicuously bright-yellow near the base. 6. C. chromapes. 
Stem entirely white or grayish-white. 7. C. viscidus. 
Tubes flesh-colored ; pileus glabrous, floccose or squamulose. 
Pileus glabrous. 8. C. griseo-roseus. 
Pileus adorned with appressed yellowish flocci. 9. C. conicus. 
Pileus adorned with conspicuous dark-purple scales. 10. C. Fanderbiltianus. 
Tubes bright-yellow, sometimes tinged with scarlet, unchanging at 
maturity or in dried specimens. 
Stem smooth ; pileus glabrous. 
Stem 2 cm. thick; spores 15 64. 11. C. flaviporus. 
Stem less than 1 cm. thick; spores 10 x 4 w. 12. C. auriporus. 
Stem reticulate; pileus and stem covered with a bright-yellow or 
scarlet tomentum or pulverulence. 13. C. auriflammenus. 
Tubes some shade of yellow or brown, usually becoming darker with 
age (in C. fumosipes, C. sordidus, and C. Roxanae, the tubes are 
whitish when young). 
Parasitic on species of Scleroderma. 14. C. parasiticus. 
Found in clusters on roots and stumps of pine; pileus bright 
golden-yellow. 15. C. hemichrysus. 
Found on the ground, rarely on wood much decayed and then not 
in clusters. 
Tubes stuffed when young, their mouths usually white; pileus 
usually glabrous, 
Stem furfuraceous, lilac-gray; pileus and tubes chocolate- 
brown. ; ; 16. C. eximius. 
Stem smooth or reticulate; pileus and tubes of lighter color 
than above. 
Spores brownish-ochraceous, 13-15 4-5; stem more or 
less reticulate. 17. C. crassus. 
Spores ferruginous-ochraceous, 9-12x45y; stem rarely 
reticulate at the top; pileus often olivaceous and spotted. 18. C. affinis. 
Tubes not stuffed when young. 
Pileus distinctly viscid, glabrous, yellow, sometimes more or 
less reddish-brown; stem not reticulate. 
Tubes brick-colored, flesh peppery; stem solid, yellow at 
the base. 
Tubes yellow, flesh mild. 
Stem hollow, glabrous. 
: 1 20. C. 
Stem solid, dotted with yellow or red glandules. 21. C 
Stem solid’ not dotted. 22. €. 
19. CL ferruginatus. 
Curtisti. 
inflexus, 
Atkinsonianus. 
