REVISION OF THE NORTH AMERICAN HYDNACEAE 139 
Pileus thin, blackish or dark olivaceous, small, less than 3 cm. wide. 
IO. 5, atro-viridis, 
Pileus fuscous or some shade of brown or red.* 
Pileus thick ; stem stout, usually shorter than the width of the pileus ; 
teeth coarse usually more than 5 mm. ong. 
Surface of the pileus smooth or subpubescent. 
5. laevigatus. 
Surface of pileus more or less scaly, 7. 5. imbricatus, 
Pileus thin ; stem slender, length equal or greater than width of pileus, 
teeth fine, less than 5 mm. long. 
Surface of pileus smooth or subpubescent ; stem radicating ; plant 
small. 5. 5. fuligineo-violaceus. 
Surface of pileus more or less scaly. 
Plant small; scales fine; flesh drying thin, hard, dark, sub- 
translucent. 9. 5. Underwoodit. 
Plant large ; scales coarse; flesh drying opaque, fibrous, some- 
what soft or pithy, tan colored. 8. 5. fennicus. 
1. Sarcodon reticulatus sp. nov. 
‚ст. wide, more or less confluent ; margin thin, incurved, subre- 
pand, sterile; surface at first tomentose or pubescent, at length 
smooth or subsquamulose in the center of the disk, alutaceous to 
reddish at center fading out to pale buff or white at margin ; substance 
fleshy, somewhat fragile, but of fibrous structure, whitish ; stem 
short, stout, obconic, solid, 2-4 cm. long by 1-3 cm. wide, sub- 
attenuate below and largely buried in the sand, so that the pileus 
seems to rest on the ground, smooth, concolorous with pileus ; 
teeth terete, slender, tapering, acute, subtriangular in cross-section 
at the base and coalescent so that when the teeth are broken awa 
they leave an anastomosing network of low irregularly thickened 
ridges, interior darker than the outside and subtranslucent, color of 
surface whitish to cinereous, subdecurrent, 2—6 mm. long, 0.25- 
4 to one millimeter; spores white to pale yel- 
low, subglobose, tuberculate, 3-3.5 и wide; taste mild; odor not 
distinct. 
Нав.: On the ground in dry sandy pine woods, more or less 
covered with leaves, pine needles, and sand so as to be unnotice- 
able. Хоу. 
RawcE: New Jersey, Copp. 
Exsicc.: Ellis N. Am. Fung. 929. 
* From this point the synopsis is not very satisfactory as the species are not well 
understood and there are many forms that require more careful field work. 
