142 Journal of the Mitchell Society [June 



lens; color of raisins, bnt much darker in age; gelatinous and rather 

 tender. 



Spores pure white, spherical with a distinctive mucro, 8.6-11.8/a. 

 Basidia subpyriform, large, divided quite irregularly into four cells, 

 15.5-18.5 X 20.2-25. V 



There seems to be no agreement among European botanists as to 

 what T. foliacea Pers. is (if indeed different from T. frondosa), and 

 furthermore our plant does not agree with any of them. Bresadola's 

 idea of T. foliacea is that it grows on Larix and Abies 4-8 cm. high and 

 broad, from hj-aline-saccharine to fleshy-isabelline tinted with umber- 

 violet. Spores hyaline, globose, 7-10 x 7-9/i, basidia subglobose to 

 ovate, 16-18 X 14-16;u. Subhymeniai hyphae 2-2.5/x thick (Fung. Tri- 

 dent, p. 97, PI. 209, fig. 1). This conception is evidently quite differ- 

 ent from that of Brefeld (I.e. p. 98) who places T. foliacea in tlie 

 genus Ulocolla and doubts its distinction from U. saccharina (previ- 

 ously Exidia saccharina) which, he says, has identical basidia, spores 

 and sporidia, as well as color, and grows also on coniferae. 



This species differs from T. frondosa in rougher surface that is 

 not glaucous, larger spores and much larger basidia, more complicated, 

 crumpling, thicker, less simple and less perfect lobes, more tender 

 structure, and darker color. In drying T. frondosa shrinks very 

 much less than T. aspera and does not become so black. 



3950. On decaying oak stump back of Power Plant, January 17, 1920. Photo. 

 Type. 



5. Tremella auricularia Moller 



Plate 62 



Forming a flat, somewhat crumpled, folded, erect and branched 

 plate about 1.5 cm. long and 7 mm. high and less than 1 mm. thick ; 

 color a dull reddish clay, almost intermediate between raisin color 

 and clay color ; surface smooth. Texture softly gelatinous and tender. 



Spores white, elliptic or in one view approaching jug-shaped, 

 5.2-9.7 X 9.3-15/A, a few oval. In sprouting the spores form a good 

 number of very small spherical sporidia about 3-5;li thick, which ab- 

 sorb all the contents and form a group in place of the collapsed and 

 almost invisible spore. Basidia four-celled, 12.5-15/x thick. 



This is easily different from our other species in the white, jug- 

 shaped spores, small size, delicate texture and dull color. That it is 

 Holler's species seems certain. His description and figures agree, 



