584 



Specc. on dead oak limbs from Canada (Dearness, 1665), and on 

 oak limbs from Louisiana (Langlofe, 1699), have tlie stroma smaller 

 (1J-2 mm.) and, except the small, black disk, closely invested by the 

 adherent epidermis; the perithecia also are smaller (not over \ mm.), 



The asci and sporidia are almost the same 



and scarcely compressed, 

 as in the European specc. 



D. verruciformis, (Ehr.) 



Sphcsria verruciformis, Ehr. in Plant. Crypt. Exsicc. 280. 



Sphcsria avellana, Pers. Dispos. Meth. p. 2. 



Diatrype verruciformis, Fr. Summa, p. 385. 



Diatrypella verruciformis, Nitsch. Pyr. Germ. p. 76. 



Diatrypella informis, E. & E. in Ell. & Evrht. N. A. F. 2d Ser. 2530. 



Diatrypella Tocci&ana, var. subeffusa, E. & E. Journ. Mycol. IV, p. 62 



Diatrypella affinis, Cke. and D. subglobata, Cke. & Gerard, Grev. XIV, p. 14. 

 Exsicc. Thura. M. U. 65. M. March. 169, 466, 755, 1720, 2150. Krieger, F. Sax. 178, 179. 

 Rab. F. E. 135, 1022. EH. & Evrht. N. A. F. 2d Ser. 2530. Cke. F. Brit. Ser. I, 483. 

 Ser. II, 220. Roum. F. Gall. 1473. 



Stromata erumpent through the variously fissured and closely 

 adherent epidermis, subrotund or irregular in shape, wart-like or flat- 

 tened-pulvinate, 1-6 mm. diam., dirty drab or dark rust-color at first, 

 finally black, white inside, thick, sometimes confluent 2 or 3 together, 

 or forming an uneven crust of considerable extent. Perithecia 25-50 

 in a stroma, crowded, ovate or globose, |-J mm. diam. or f-1 mm. 

 high by \-\ mm. broad, with more or less elongated necks. Ostiola 

 obtusely conical, entire or substellate-cleft, slightly projecting. Asci 

 narrow-clavate, long-stipitate, paraphysate, 120-200 x 8-12 /i. Spo- 

 ridia irregularly crowded, allantoid, slightly curved, yellowish, 5-8 x 



On dead limbs of Quercus, Carpinus, and various deciduous 

 trees, common. 



The stroma is broader and mostly flatter and whiter inside than 

 in D. qiiercma, and the sporidia are smaller. 



Var. Spegazziniana, Sacc. (D. tuberculata, Ell. & Calkins in 

 Serb.), on Sabal serrulata, Florida, has the small (1 mm.), tuberculi- 

 form stromata subseriate. Asci (p. sp.) 75-80x10-12 /i. Sporidia 

 5-7x11 p. 



The species (sec. Dr. Winter) is specially "characterized by the 

 shape of the asci, which are broadest just below the apex. 



E. Tocciseana, De Not, Sfer. Ital. p. 30, tab. 31. 



Microstoma verruccsforme, Awd. in Rab. F. E. 253. 

 Exsicc. Fckl. F. Rh. 2059. Rab. F. E. 253, 2059. Rehm Asc. 275. Thura. M. U. 65. 



Stromata scattered or gregarious, small, pustuliform or hemispher- 

 ical, Wten angular, with a broad base (1J-2 mm.), with a black, orbic- 

 ular or elliptical disk, which pierces the epidermis, through which the 



