MurrILL: PoLyporACEAE OF NorTH AMERICA 431 
three plants form a perfect series in development. All grew at- 
tached to decaying wood beneath the soil. The pores are not 
rounded and punctiform when very young, but large and areolate 
like those of Merulius, the short walls being built up from these 
ridges like the cells of a honey-comb without increasing in diam- 
eter. At first glance, one would say that this species,is a peculiar 
form of S. radicatus, but a little investigation shows that it is quite 
distinct. Because of this superficial resemblance, however, I have 
assigned to it the name given above. 
10. Scutiger griseus (Peck) 
Polyporus griseus Peck, Rep. N. Y. State Mus. 26: 68. 
1874. 
Polyporus Earlei Underw. Bull. Torrey Club, 24: 84. 1897. 
Exsicc.: New York, Peck; New Jersey, Ellis, Stevenson; Ala- 
bama, Zar/e. \ 
This species has been found on the ground in open deciduous 
woods in New York and New Jersey and in pine woods in Ala- 
bama. It is the only member of the genus that has been collected 
in any quantity. Its place in the American flora is very much the 
same as that occupied by P. eucomelas in Europe, though the two 
species are certainly distinct. 
11. Scutiger persicinus (Berk. & Curt.) 
Polyporus persicinus Berk. & Curt. Grevillea, 1: 37. 1872. 
Little is known of this plant beyond the original description in 
Grevillea and a longer one by the same authors in the Centuries of 
North American Fungi. It was first found by Ravenel in South 
Carolina growing at the base of trunks in pine woods. A study 
of the type at Kew shows it to be a very distinct species, while 
its large size and dark brown or purple color must make it con- 
spicuous among related species when seen in the fresh state. 
While bearing an outward resemblance to P. Schweinitsti, its con- 
text and pores are white when fresh, changing to gray when dried, 
and this color is uniform, except for a black line showing in cross- 
section as a limit of growth for a certain period. The margin of 
the pileus is very obtuse and lobed or quite irregular from con- 
fluence. 
