625 



and ostiola depressed. The specimens examined by Fries were old, 

 and no trace of asci or sporidia remained. As far as one can judge 

 from the diagnosis, this and the preceding species can hardly be 

 distinct. 



N. micrdplaca, (B. & €.) 



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

 Anthosioma microplacum, Sacc, Syll. 1112, 

 Nnmmularia microplaca, Cke. Syn. 837. 



Exsicc. Rav. Fungi Car. IV, 39.— Rav. F. Am. 355.-511- & Evrht. N. A. F. 2d Ser. 1555, 



Stroma much tlie same as in N. hypopMoia^ orbicular, \-\ cm. 

 across or elongated 1-2 x \-\ cm., thin, crustaceo-carbonaceous, black, 

 originating beneath the epidermis, but soon bare, surface even, faintly 

 punctulate from the minute ostiola, which are not prominent but 

 slightly depressed, as in Nummularia punctulata, the opening at first 

 filled with white farinaceous matter. Perithecia ovate-globose, small 

 (less than \ mm.), monostichous. Asci (p. sp.) about 25 x 3 /i, or with 

 the short base, 45-50 // long. Sporidia uniseriate, ends mostly slightly 

 overlapping, subinequilaterally elliptical, pale brown, 4J-5 x 2-2^ [i. 



On Sassafras officinale, South Carolina (Ravenel), and Ohio 

 (Morgan and Kellerman); on Persea, Darien, Ga. (Ravenel). 



Sec. Berkeley N. hypophlcea has larger ostiola and nari'ower 

 sporidia. This is true as to the ostiola, but as regards the sporidia the 

 case is exactly the opposite. The wood beneath the stroma is stained 

 with the same olive-yellow color as in the next species, to which this is 

 closely allied, but differs as stated. 



N. hypophloea, (B. & Rav.) 



Diatrype hypophUea^ B, & Rav. Grev. IV, p. <)5. 

 Anthosioma hypophlaum, Sacc. Syll. 1137. 

 Nummularia hypophlcea, Cke. Grev. XII, p. 7. 

 Exsicc. Rav. Fungi Car. IV, 38.— Ell. & Evrht. N. A. F, ad Ser, 1554, 



Stroma thin, suborbicular, ^-1 cm. across, slate-color, originating 

 beneath the cuticle which is soon thrown off, slightly convex, and 

 faintly papillose from the slightly projecting ostiola. Stains the sub- 

 jacent wood yellowish or yellowish-olive. Perithecia in a single layer, 

 ovate-globose, small {\ mm.), abruptly contracted above into a slender 

 neck piercing the superficial, carbonaceous layer of the stroma. Asci 

 slender (100x4 ;«), with a thread-like base, p. sp. 55-60 // long. Spo- 

 ridia uniseriate, lying mostly end to end, narrow-elliptical, pale brown, 

 2-nucleate, about 7 x 2J-3 //. 



N. subapicul^ta, E. & E. Journ. Mycol. V, p. 23. 



Subcuticular, erumpent, 1-2 cm. across, convex, 1 mm. thick, or 

 79 



