28 GUIDE TO CRYPTOGAMS. 



Hyrnenochaete. Sporocarp as in Stereum ; hymenium cov- 

 ered with minute bristle-like projections. 



Corticium. Sporocarp spread over the substrate, often crus- 

 taceous, woody, corky, fleshy, or floccose-tomentose ; hymenium 

 hard, often cracked by seams, not separated from the rest of the 

 sporocarp by an intermediate layer. 



Exobasidium. Sporocarp absent, the whole plant-body con- 

 sisting only of mycelium penetrating the tissues of living plants 

 producing distortions often of considerable size and forming an 

 hymenium at the surface of the distortion. 



10 b. Sporocaip erect, cylindrical, club-shaped or branched 

 and cored-like ; hymenium produced on all sides 

 of the upper part or over the whole surface of the 

 sporocarp. 



Clavaria. Sporocarp cylindrical, club-shaped or branched 

 and coral-like, mostly without a well-marked stalk, of fleshy 

 consistency. 



Pistillaria. Sporocarp small, simple, cylindrical or club- 

 shaped, scarcely stalked, waxy or horny, stiff. 



TREMELLINE^J. Genera : 



Tremellodon. Sporocarp dimidiate, more or less pileate, 

 often with a lateral stalk, thickly beset on the under side with 

 spine-like outgrowths which bear the Irymenium. 



Exidia. Sporocarp various in form, peltate, mostly patellae- 

 form or convex disciform, on a short thick stalk ; hymenium 

 borne on the upper surface, which is papillose. 



Tremella. Sporocarp very various in form, mostly irregular, 

 lobed, wrinkled and sinuose, not papillose, Basidia roundish, 

 2-4-parted. Spores simple. 



Dacrymyces. Sporocarp much as in Tremella. Basidia 

 forked into two branches. Spores plurilocular. 



DISCOMYCETES. Genera : 



1 a. Sporocarp large, fleshy or waxy, putrescent, vertical, 

 stalked, bearing the hymenium on a mostly darker- 

 colored p>ortion, which is pileate, conical, club-shaped 



