166 REVISION OF THE NoRTH AMERICAN HYDNACEAE 
Substance of pileus nearly uniform, thin. 
Surface of pileus more or less zonate. 
Zonations alternately light and dark, raised. 6. P. fasciatus. 
Zonations shading regularly to the margin. 
lants more than 1 cm. wide, color reddish brown or chestnut. 
lants I-3 cm. wide, confluent, odorless. 
7. Р. tomentosus. 
Plants more than 3 cm. wide, rarely confluent, fragrant. 
; . Р. coriaceo-memóranaceus. 
Plants small, less than 1.5 cm. wide, coloray-brown or mouse-colored. 
9.gr. Р. E/lisianus 
Surface of pileus azonate ; substance soft, cottony. Io. Р, delicatus. 
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. 
PHELLODON NIGER (Fries) Karst. Rev. Myc. 3: 19. 1881 
Hydnum nigrum Fries, Obs. Myc. 1: 1 34. 1815; 
Hydnellum nigrum Karsten, Medd. Soc. Faun. et Fl. Fenn. 5: 
27224878. 
Calodon niger Quélet, Ench. Fung. 191. 1886. 
Plant terrestrial, mesopodous, medium size; pileus expanded, 
depressed, subround to irregular, uneven, 2—5 cm. wide; surface 
floccose-tomentose toward center, radiate-fibrose toward margin, 
subzonate, blackish to olivaceous when fresh, mouse-gray to fus- 
cous when dry; margin thin, acute, sterile; substance spongy or 
pithy, fuscous in upper part of pileus, compact, hard, bluish black 
in lower part and continuous as a core in the stem ; stem slender, 
deformed, surrounded below by spongy tomentum, surface floc- 
cose-tomentose, fuscous 6 cm. long, 1.5 cm. wide; teeth slender, 
terete, or flattened and coalescent toward the margin, often form- 
ing concentric lamellae, subpuberulent, scarcely decurrent, whitish, 
at length cinereous ; spores globose, echinulate, white, 4-5 и wide ; 
taste mild, odor faint in the dried plant. 
Нав.: On ground among leaves. Aug. 
Rance: Connecticut, Underwood, Earle ; New York, Pech. 
Icon.: Fries, Icon. Select. Hymn Es M cx 
Exsicc.: Karsten, Finland Fung. 908; Sydow, Myc. March, 
3334; Allescher & Schnabl, F ung. Bavar. 132; Roumeguere, 
Fung. Select. Exsicc. 4309. | 
These plants differ from Fries’ description in that they havea 
faint odor when dried, are subzonate, not of one color within, and 
Fries does not mention two kinds of substance to the pileus. His 
figure in the Лопез, however, represents a plant subzonate and is 
а good representation of our plant in all particulars except that 
. 
