REPORT OF THE STATE BOTANIST I917 89 



Murrill (North America Flora, 9: 5. 1907) reported the spores 

 of this species as "ovoid, hyahne, 6x5 fx." Examination of the 

 type material shows, however, that they are allantoid, hyaline, qviite 

 small, 3 to 5 |U, long and about i /x broad (plate 9, figure 5). These 

 spores are found abundantly in sections, and many of them were 

 seen attached to basidia, so there can be no question as to their 

 identity. The same type of spore has been found in several other 

 collections of this species. Many setae are present in the hymenium, 

 but they do not project so prominently as in many other species 

 (plate 9, figures 2-3). In crushed preparations (plate 9, figure 4) 

 they are seen as the enlarged, blunt-pointed, dark-brown ends of 

 ordinary hyphae, but they are quite different from the very large 

 setaelike bodies of Poria setigera and Polyporus 

 glomeratus. Their diameter is only 3 to 5 ft. The hyphae of 

 the trama and subiculum are dark brown, rather heavy walled, and 

 sparingly branched (plate 9, figure 6). Cross walls are faintly visible 

 in the darker colored of these and more conspicuous in those of 

 lighter color. There are no clamp connections on these hyphae. 

 Their diameters are from 2.5 to 5 ft. 



The type material is from dead wood of spruce and that sub- 

 stratum appears to be the usual one in the eastern United States. 

 In the northwestern United States it occurs on Abies and on Larix. 



The species belongs in the same group as Poria f e r r u - 

 ginosa Fr., Poria contigua (Pers.) Fries, and Poria 

 i n e r m i s . From the first two it differs in the smaller spores 

 and from the last in the presence of setae and in the hyaline spores. 

 In fresh specimens the light-colored margin is often distinctive. 



Redescription. Annual or rarely perennial, brown, inseparable 

 (?), effused for several centimeters, with a narrow, thin, sterile, 

 tomentose border of light color in fresh plants ; subiculum con- 

 spicuous, bright tawny, up to i mm thick ; tubes oblique, 2 to 4 mm 

 long, their mouths snuff brown, cinnamon brown, or slightly gray- 

 ish, rounded, averaging 4 to 5 to a millimeter ; dissepiments rela- 

 tively thick, entire ; spores allantoid, hyaline, 3 to 5x1 /x ; setae 

 abundant, not conspicuous, projecting, blunt-pointed, 3 to 5 /i in 

 diameter ; hyphae dark brown, heav\- walled, nearly simple, 3 to 

 5 /i in diameter, cross walls visible ; no clamp connections. 



On wood and bark of spruce. Also on Abies and Larix from 

 the northwest (Weir). 



Type locality. North Elba. N. Y. C. H. Peck. Also known 

 from the northwestern United States (Weir). 



