112 MINNESOTA BOTANICAL STUDH^S. 



niuni sunken, concave, gray-white; exterior blackisli-brown, scabrous 

 to furfuraceous or vertically striate, sometimes, 0.5-1.5 mm. high, 

 I mm. wide ; spores needle-shaped, acute, lying in ascus in fascicle, 

 slightly bent or straight, hyaline, smooth, 5-7 septate usually, some- 

 times more, 40-55x0.5-1.5 mic. ; paraphyses filiform, very slightly 

 enlarged at apex, colorless. 



Breaking through the bark of dead sticks generally in clusters, 

 on Pnuiits piiiiiila L. Cook, Aug. 1903, Freeman & Ballard 100. 



The Minnesota specimens differ from G. iirc coins (Alb. & Schw.) 

 Karst. in habitat (growing upon Pruniis) ; the chiefly clustered 

 and stipitate habit ; and the slightly shorter spores. Karsten gives 

 for G. urccolus (113, p. 112) "Apothecia caespitosa aut solitaria," 

 Rehm (178, p. 238) gives "meist einzeln, seltener zu 5-7 zusam- 

 mengedraengt" for the same. G. tirccolifonnis Karst. (113, p. 213) 

 and Cenanghim urceolatum Ellis (Grev. 6: 9) seem to each be 

 confined to a special host, the former on Vaccininm and the latter 

 on Clathra, while G. urccolus seems not to be confined to any one 

 host, f^nt Jilts is a host not previously given for a Godronia. Both 

 G. urccoliformis Karst. and C. urceolatum Ellis are described as 

 scattered, solitary, and sessile or subsessile. The exsiccati corrob- 

 orate these descriptions, namely C. urceolatum Ellis, North Amer- 

 ican Fungi. 990 ; C. urccolus Karst., Roumeguere, Fungi Gall. 1460 ; 

 G. urccolus, Sydow, Mycoth. March. 1167. 



3. TRYBLIDARIA SACCARDO. 



Cups solitary fleshy-coriaceous, sessile, more or less saucer-like; 

 black, small ; margin erect, obtuse ; spores pyriform, brown, multi- 

 septate, many celled. 



I. Tryblidaria fenestrata (Cke. & Peck) Rehm, Ann. Myc. 2: 525. 

 1904. 



PatcUaria fenestrata Cke. & Peck, Report 28:68. 1875. 



Blitrydium fencstratum Sacc. Syll. Fung. 8:805. 1889. 



Scattered, dull black, small, irregular to circular in outline ; mar- 

 gin rounded, erect ; hymenium plane or convex ; spores pyriform, 

 multiseptate, brown, 26-28x10-12 mic; paraphyses clavate and 

 dark at the apex. 



On dead branches of Popnlus trcnudoides : St. Louis, July 1886, 

 Hoi way 118. 



4. DERMATEA FRIES. 



Cups caespitose or single, erumpent. sessile, coriaceous, black, 



