584 



Sprrr. on dead onk limbs (Voni Canada (Dcarness, 1GG5), and on 

 oak limits from Louisiana (Langlois, 16W)), liave the stroma smaller 

 ! H-2 niiii.) and, except Ilic small, black disk, closely invested by the 

 adherent epidermic the pcritliecia also are smaller (not over \ mm.), 

 and scarcely compressed. The asci and sporidia are almost the same 

 as in the Knropean spcec. 



D. verrucseformis, (Ehr.) 



Sphesria verructefortnis, Ehr. in Plant. Crypt. Exsicc. 280. 

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

 Diatrype verrucezfornris, Fr. Summa, p. 385. 

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

 DiatrypeUa infornris, E. & E. in EH. & Kvrht. N. A. F. 2d Ser. 2530. 

 Diatrypella Toccifzana, var. <>ubejffusa, E. & E. Journ. Mycol. IV, p. 62. 

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

 Exsicc. Thum. 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. Roura. F. Gall. 1473. 



Stroma ta 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 



o 



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, 120-200x8-12^. Spo- 

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

 l-|-2^. 



On dead limbs of Quercus, Carpinus, and various deciduous 

 trees, common. 



The stroma is broader and mostly flatter and whiter inside than 



> 



in D. quercina, and the.sporidia are smaller. 



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

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

 forrn stromata subseriate. Asci (p. sp.) 75-80x10-12 ji. Sporidia 

 5-7 x 1 J p. 



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

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



E. Tocciaeana, De Not, Sier. Ital. p. 30, tab. 31. 



Microstoma verruca; for me, Awd. in Rab. F. E. 253. 

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



Stromata scattered or gregarious, small, pustuliform or hemispher- 

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

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



