Gilbert—Tremellce of Wisconsin. 1155 
across, thick, expanded behind into lateral thick, stem-like base,, 
pileus brownish with opalescent shades, very minutely granu¬ 
lar ; hymenium watery grey; teeth stout, acute, whitish; spores 
sub-globose 7-8/* diam. 
This is the only true tremelloid fungus having spines and it 
has been classed for some time along with the Hydnums but 
Engler and Prantl place it where it doubtless belongs, among 
the Tremellineae, though its outward appearance would indi¬ 
cate that it belongs with the Hydnums. 
Ho specimens have been found at Madison, but specimens 
have been received from the pine woods of Northern Wisconsin. 
The form described as Tremella mycetophila Pk. (H. Y. 
Eep. Hat. Hist. 28 p. 53.) and Exobasidium mycetopJiila (Pk.) 
Burt. (B. T. C. XXVIII p. 283) is fairly common in Wiscon¬ 
sin and is so strangely developed at times that the entire body 
of the Collybia is completely hidden by the fungus. I am in¬ 
clined to regard this fungus as in need of still further study for 
the determination of its proper relationship. 
16. Sebacina incrustans (Tul.) Bref. Pig. 36-37. 
Sebacina incrustans (Tul.) Ann. Sc. Hat. 1872 t. X f. 
6 - 10 . 
Sebacina incrustans Bref. (Unters. VII p. 103.) 
Thelephora sebacea Pers. (Synops. p. 577.) 
Merasma serratum Pers. (Comment, p. 106.) 
Corticium incrustans Pers. (Observ. I p. 39.) 
Thelephora incrustans Pers. (Synops. p. 577.) 
Whitish at first, fleshy, soft, then becoming rigid, incrusting; 
form very variable; hymenium collapsing when dry and often 
tinged with cinnamon brown; spores sub-globose, spinulose, 
vinous 6-10/*, basidia tetra-sporous. 
Pound on stumps, twigs and forming irregular growths in 
patches of grass. White, soft and fleshy when growing. 3-5 
cm in diameter and about the same in height. 
The researches of Tulasne and Brefeld have put this form 
among the Tremellineae where it belongs, removing it from the 
Thelephoreae where it has been put by many investigators. 
Bare. 
