58 NATUEAL HISTOEY BULLETIN 



fall of 1906 in similar localities in the woods of the New York 

 Botanical Garden. 



Sph;erospora conpusa (Cooke) Sacc, Syll. Fung. 8: 190. 



1889. 

 Peziza confusa Cooke, Mycogr., 69. 



On the ground where a pile of wood had been burned, woods, 

 Iowa City. 



The plants of this species differ from the preceding mainly 

 in the size of the cups and the habit as well as the habitat. The 

 plants were found in quantity growing in a dense mass on a 

 burnt place. The preceding species occurs on mossy banks in 

 rather sandy places, the cups are more or less scattered, never 

 densely crowded, and much larger. The preceding form has 

 been studied in such localities for several years in succession. 



DETONIA Sacc, Syll. Fung., 8 :105. 1889. 



Cups large, fleshy, expanded, discoid, brown ; asci cylindrical, 

 8-spored; spores globose, hyaline, smooth or rough. 



Detonia trachycarpa (Curr.) Sacc, Syll. Fung., 8:105. 1889. 



Plate 14, f. i. 



Peziza trachycarpa Curr., Trans. Linn. Soc, 24: 493. 1864. 

 Discina trachycarpa Karst,, Act. Soc. Fauna Fl. Fenn., 2 : 113. 



1885. 

 Plicaria trachycarpa Boud., Bull. Soc. Myc. France, 1: 102. 



1885. 

 Aleuria trachycarpa Gill., Discom., 207. 

 PUcariella trachycarpa Rehm, Rabenh. Krypt Fl., I 3 : 996. 1896. 



Cups at first closed, soon expanded and nearly plane, umbili- 

 cate, scattered, or densely crowded, becoming very irregular with 

 age, often contorted and twisted especially when crowded; hy- 

 menium dark brownish-black, more or less uneven; cups exter- 

 nally granular; asci cylindrical, 8-spored; spores globose, about 

 15/ui in diameter becoming very rough with more or less elon- 

 gated ridges; paraphyses filiform, enlarged upwards and filled 

 with brown coloring matter. 



