180 Journal of the Mitchell Society [March 



sometimes over the entire surface. In section, as shown by the trun- 

 cated tips, the teeth are irregular and more or less angular, varying 

 considerably in size and often several fusing. 



Spores (of ]^o. 1511) white, oblong-elliptic, smooth, clear, minute, 

 1.8 X 3-3.8^1. 



Growing on dead wood of deciduous trees. 



87. On a stump, meadow at foot of Lone Pine Hill, October 14, 1911. 

 1511. On fallen branch of white oak in Professor Howell's yard, December 

 10, 1914. Photo. 



Common, stumps and sticks. Curtis. 



3. Steccherinum adustum (Schw.) Banker 



Plates 13 and 28. 



Plants growing on logs, sessile or stalked, at times resupinate in 

 part, simple or complicated by others springing from the back of the 

 lower ones near the point of attachment. Cap up to 8 cm. wide, rough- 

 ened and uneven with low ridges and channels and sometimes with 

 nodules, minutely velvety, or smooth in places, white or faintly tinted 

 with creamy-flesh or light tan, smoky when rubbed and often dark 

 on the margin ; circular or fan-shaped, the margin very thin and wavy. 

 Flesh pure white, tough and elastic, 2 mm. thick near center, tasteless 

 and odorless. 



Stem entirely absent with the cap laterally attached, or with a 

 short but distinct stem which is eccentric or lateral or rarely central. 

 It is up to 1 cm. long and very variable in size, velvety, white or dis- 

 colored. 



Teeth about 1.5-3.5 mm. long, more or less flattened, and generally 

 branching near the tips into several processes, white at first, then turn- 

 ing quickly when drying to a clear and beautiful rose color, then 

 purplish rose, and in age a dark cinnamon-brown. If bruised when 

 fresh the teeth turn to a deep smoky color due to the fact that they are 

 covered with minute hairs, visible only under the microscope, and 

 these hairs when bruised turn almost black. 



Spores (of 'No. 1607) white, long-elliptic, smooth, minute, 1 x 3/x. 



Growino; on rotting wood. 



