80 



Mycologia 



The fungus appears to fall in the genus Myriangmm as revised 

 by Von Hohnel, and since it does not agree with any species de- 

 scribed under it, the following name is proposed : 



Myriangium tuberculans sp. nov. 



Stromatibus tuberculi-formibus, primo immersis, demum super- 

 ficialibus, solitariis vel gregariis, firmiter affixis, 1-3 vel 4 mm. 

 diam., irregulariter hemisphaericis, ruguloso-verrucosis vel sub- 

 papillatis, interdum mutua pressione angulosis, atris, vel rufo- 

 bruneis, intus atrosanguineis, vel fusco-bruneis, contextu pseudo- 

 parenchymaticis ; loculis numerosis, subpolystichis, subperiphericis, 

 globosis vel ovatis, monoascis, indehiscentibus ; ascis subglobosis 

 vel ovatis, crasse tunicatis, 8-sporis, aparaphasatis, 62-65 x 40 ju,; 

 sporidiis oblongis, rectis vel leniter curvulis, utrinque obtusis, 

 tranverse 7-septatis, muriformiter divisis, ad septa leniter con- 

 strictis, hyalinis, vel demum subflavidulis, 25-28 x 10/i. 



Habitat : In cortice vivo Caryae illinoensis, Mississippi, Amer- 

 ica boreale. 



State Plant Board, 



Agricultural College, Mississippi. 



Explanation of Plate 14 



Fig. 1. (a) An expanded ascus with the ruptured sheath collapsed about 

 its base; (b) an ascus with its spores, surrounded by the enveloping sheath 

 which resembles a thickened ascus wall ; (c) spores. 



Fig. 2. Peripheral loculiferous portion of stroma as represented in figure 4, 

 enlarged. 



Fig. 3. Twigs of Carya illinoensis bearing the stromata of the fungus. 

 Fig. 4. Section through a stroma showing pseudo-parenchymatic structure 

 and loculiferous region located near periphery. 



