1921] The Thelephoraceae of North Carolina 147 



Entirely resupinate on rotten wood; the context filled with 



brown stellate bodies (cystidia) Asterostroma (p. 164) 



Not as above in all respects. 



Plant entirely resupinate, forming a crustaceous layer on 



wood with no shelving margin, or if with a narrow 



shelving margin then with dark spines in the hjinenium; 



in one species of Aleurodiscus forming small cup-shaped, 



centrally attached plants with the margin upturned all 



around and in Corticium lilacino-fuscum and Peniophora 



albomarginata there may be a very narrow shelving 



margin. 



Spores and basidia large to very large, the spores plump 



with the surface spiny or minutely rough; plant 



small, chalk-white or in one soecies thp Vi-irmani'iirv^ 



Addenda 

 Add to the literature list given on page 146 the following: 

 Hohnel and Litschauer, Beitragez. Kenntnis d. ^^^^^f ^^'f^^^^^^^f'^; 

 K. Akad. Wiss. Wien 115: 1549, with 10 text Ap- 1906; iib. 

 739 pis. 1-4 and 20 text figs. 1907; 117: 1081, with 10 text figs. 

 1908. This series treats many species of most of the genera m- 

 cluded by us. 



^ taLu, tuugn ana elastic, but fleshy, repeatedly branched 

 into a thick mass of flat, contorted-anastomosing 

 branches; growing from rotting roots or stump bases. 



Sparassis (p. 193) 



EXOBASIDIUM 



Parasitic on leaves, shoots and flowers of woody plants, mostly 

 if not entirely confined to the Ericaceae, and forming on the surface 

 of the host, which is usually hypertrophied or deformed into galls, a 



