239 



On Hicoria, Clark County. Indiana. (Van Hook) : on wood and bark. 

 Topeka, Kans. (Graigin), and on bark. Ottawa, Canada (Macoun) ; on 

 bark of Ulmus americana Missouri, (Demetrio). On Sorbus aucuparia in 



Europe. 



::. A ii m miliaria hull in nit. Tul. Plate III, Figs. 1. 2 and 3. 



Hypoxylon uummularium, Bull. Cbanip. tab. 46s. rig. 4. 

 Sphaeria nummularia. D. C. Flore Fr. II, p. 290. 

 Sphaeria anthracina. Schm. & Kze. Mycol. Helte 1. 55. 

 Sphaeria elypeus, Sehw. Syn. N. Am. 1219. 

 Nummularia elypeus, Cke. IX, 507. 



Exsic. Ell. N. A. F. 85. Rab. F. E. 2956. Rehm. Ase. 977. 

 Illustrations. (See Sacc. XX. p. 202. for list of.) 



Stroma at first covered by the epidermis, soon erumpent. almost super- 

 ficial and free, convex, orbicular or oval, sometimes irregular in shape or 

 broadly effused, black inside and out, punctulate from the slightly promi- 

 nent ostiola, clothed at first with a reddisb or rusty layer of conidia. 

 Perithecia rather large, ovate, black, loosely included in the packed cells of 

 the stroma. Asci cylindrical with very sbort stalks, spore-bearing part 

 115-140x7-10 microns (E. & E. 100-115x10 microns), with long, stout para- 

 pbyses. Spores eight, uniseriate, elliptical, hyaline becoming opaque, 10- 

 23x5-10 microns, mostly about 15-20x6-8 (E. & E. 12-15x7-9. Sacc. 12-14x9- 

 10 microns. 



In the field this species is liable to be confused with certain species of 

 Diatrype (Fig. 2, Plate III) but may be readily distinguished from them 

 by the color of its spores. Collected in abundance in Brown. Clark, Hen- 

 dricks, Monroe and Putnam counties, where it usually attacks the beech 

 and more rarely the maple. Reported connnon on the dead trunks and 

 limbs of various deciduous trees in Europe and North America. According 

 to Ellis and Everhart. it occurs for the most part cai oak in the vicinity of 

 Newfield, N. J. 



4. Xinnmularia microplaca, (B. & C.) Cke. Plate IV, Fig. 4. 



Diatrype microplaca, B. & C. Journ. Linn. Soc. X. p. 586. 



Anthostoma microplacum, Sacc. Syll. I, p. 29S. 



Nummularia microplaca. Cke. Syn. S37. 



Exsicc, Rav. Fungi Car. IV. 39. Raw Fung. Am. 355. E. & E. 



N. A. F. Second Ser. 1556. 



lllus., Revue Myc. VII, (1885) tab. 52, fig. 3. 



