340 The North American Cup-Fungi 



ExsiccATi: Rehm, Ascom. 1686; Wilson & Seaver, Ascom. 2. 



This species was described from material collected in Mt. 

 Pleasant, Iowa in February. The ascospores appear to be more 

 or less immature. Whether they later became septate is un- 

 certain. The species is very close to Pezicula crataegicola 

 (Durand) Groves but seems to differ in its smaller ascospores. 

 This apparent difference may be due to the immaturity of the 

 spores. Other characters seem to conform very closely with 

 that species. 



8. Pezicula pruinosa (Peck) Farlow; Thaxter, Mycologia 14: 



102. 1922. 



Sphaeronema prtiinosum Peck, Ann. Rep. N. Y. State Mus. 24: 85. 1875. 

 Dermatea pruinosa Petrak, Ann. Myc. 20: 196. 1922. Not D. pruinosa 



(Ellis & Ev.) Sacc. 1889. 

 Lagynodella pruinosa Petrak, Ann. Myc. 20: 207. 1922. 



Conidial stage {Sphaeronema) consisting of conical, or spinu- 

 lose, black, pruinose pycnidia which spring from a stromatic 

 base, reaching a length of 1 mm.; conidia broad-ellipsoid, 8-9 X 

 20-24 M. 



Apothecia scattered, erumpent, short-stipitate, occurring 

 singly or in cespitose clusters of three to five apothecia each 

 springing from a stromatic base, at first club-shaped, expanding 

 and becoming discoid, or subdiscoid above, pale cinnamon- 

 brown, reaching a diameter of 1 mm.; hymenium plane, or con- 

 cave, similar in color to the outside of the apothecium; stem 

 short, almost as thick as the diameter of the apothecium, densely 

 albopruinose, reaching a length of 2 mm. ; asci clavate, reaching 

 a length of 95 110 yi and a diameter of 18-21 n, 8-spored; spores 

 1-2-seriate, subellipsoid, usually slightly curved, simple, or 

 becoming 1-3-septate, 8-9 X 22-25 /x; paraphyses filiform, 

 simple, or branched, reaching a diameter of 1 ^. 



On Amelanchier canadensis, A. alnifolia and unnamed species 

 of Amelanchier. 



Type locality: Sharon, Massachusetts. 



Distribution: New York, Massachusetts, North Dakota, 

 Idaho, and Montana. 



ExsiCCATi: Reliq. Farlow. 135 a. b.; Brenckle, Fungi Dak. 450. 



9. Pezicula Rubi (Libert) Rab. in Fungi Eu. 2122. 1876. 



Patellaria Rubi Lib. PI. Crypt. Ard. 231. 1834. 



Peziza ardennensis Mont. Ann. Sci. Nat. II. 5: 287. 1836. 



