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 Menilius, 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 .v. radicatiis, 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, 



lo. Scutiger griseus (Peck) 

 Polyponis griseus Peck, Rep. N. Y. State Mus. 26 : 68. 



1874. 



Polyponis Ear/iiV nderw. Bull. Torrey Club, 24: 84. 1897. 



Exsicc: New York, Per /c; l<iev/ Jersey, P//is, StcvL/isou ; Ala- 

 bama, Earlc. 



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. Iciicomclas in Europe, though the two 

 species are certainly distinct. 



1 1. Scutiger persicinus (Berk. & Curt.) 

 Poly poms pcrsicinus Berk. & Curt. Grevillea, I : IJ. 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. Sclnocinitzii, 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 lobcd or quite irregular from con- 

 fluence. 



