230 MurriLL: PoLypoRACEAE OF NortH AMERICA 
horny substance extending from the stipe to the margin in a tree- 
like fashion: tubes plainly though unevenly stratified, 2-4 mm. 
long each season, 4-5 to a mm., grayish-brown within, mouths 
circular, white or very pale yellow, dissepiments thick, obtuse, 
entire : spores broadly ovoid with attenuate base, light yellowish- 
brown, smooth, 3.5 x 5: stipe lateral, 1 x 1 cm., cylindrical, 
equal, glabrous, shining black to dull brown, with substance like 
the context, apparently absorbed or overgrown as the pileus 
enlarges. : 
This very distinct and easily recognized species was collected 
by C. L. Smith and B. Shimek in Nicaragua during the winter of 
1891-92. Its conspicuous varnished surface and lateral stipe sug- 
gest at once the genus Ganoderma, but more important characters 
connect it with Fomes and I have with some hesitation assigned it 
to this genus, recalling the fact that /omes ungulatus often has 
considerable varnish on its surface and that an umbo often has its 
beginning in a reduced stipe. 
8. Fomes Ohiensis (Berk.) 
Trametes Ofuensis Berk. Grevillea, 1: 66. 1872. 
This plant is unusually small for the genus /omes, making 
with /, scutel/atus a rather distinct subgroup. It grows upon rails 
and dead branches of various deciduous trees. Among collections 
examined are those from Canada (Dearness), Kansas (Cragin), 
Michigan (Dennen), Ohio (James), New York (Peck). 
g. FoMEs SCUTELLATUs (Schw.) Cooke 
Polyporus scutellatus Schw. Trans. Am. Phil. Soc. 4: 157. 
1832. 
Fomes scutellatus Cooke, Grevillea, 14: 19. 1885. 
This minute species was described by Schweinitz from material 
collected on Syringa in Pennsylvania. It has since been found 
on alder, witch hazel, sweet gum and other deciduous shrubs and 
trees. Some of the collections examined are as follows: Penn- 
sylvania (Everhart), Florida (Calkins), Maine (Harvey, Blake), 
Canada (Macoun), Delaware (Commons), Ohio (James), Alabama 
(Mell). 
10. Fomes Laricis (Jacq.) 
Boletus Laricis Jacq. Miscel. 1: 164-203. pl. 20-27. 1778. 
Bull. Herb. France, p/. 296. 1786. 
