Pezicula 349 



occasionally branched, 2-3 m in diameter, the tips swollen to 8 ^l 

 in diameter, forming a yellowish epithecium. 



On branches of Hamamelis virginiana. 



Type locality: Don Valley, Toronto, Canada. 



Distribution: Canada. 



Illustrations: Canadian Jour. Res. 17: 129,/. 3, 1-2, f. 4, 



5a, b. 



ExsiccATi: Sydow, Fungi Exotici Exsicc. 423 (as Dermatea 



Ruhi). 



The type specimen is intimately associated with a Coryneum 

 which the writer took to be its conidial stage, but Groves decided 

 that the conidial stage was a Cryptosporiopsis and not the 

 Coryneum which often occurred in the same pustule with the 

 Pezicula. 



21. Pezicula Morthieri (Fuckel) Groves, Mycologia 39: 329. 



1947. 



Sphaeria micula Fries, Elench. Fung. 2: lOL 1828. 

 Micula Mougeotii Klotzs. Herb. Viv. Myc. 636. 1844. 

 Cenangium Morthieri Fuckel, Symb. Myc. 272. 1869. 

 Atractium Therryanum Sacc. Micheiia 1: 535. 1879. 

 Cenangella Morthieri Sacc. Syll. Fung. 8: 592. 1889. 

 Dermatea micula Rehm in Rab. Krypt.-Fl. V: 261. 1889. 

 Phaeangella Morthieri Sacc & D. Sacc; Sacc Syll. Fung. 18: 128. 1906. 

 Sphaerographium niveum Dearn. & House, Bull. N. Y. State Mus. 266: 89. 

 1925. 



Conidial stage erumpent from the same stroma which pro- 

 duces the apothecia, cylindric-conic, reaching a height of I mm. 

 and less than half as broad at the base, usually white, sometimes 

 darkened; conidiophores septate, branched, 2-2.5 X 25-40 m; 

 conidia hyaline, filiform, straight, or curved, pointed at the ends, 

 3-4 X 45-65 fjL, 1-3-septate. 



Apothecia erumpent, occurring singly or two or three to- 

 gether, sessile, narrowed below, less than 1 mm. in diameter and 

 height, yellowish-brown to reddish-brown; hymenium at first 

 concave, becoming plane, or slightly convex, darker than the 

 outside of the apothecium; asci cylindric-clavate, 8-spored, 

 reaching a length of 65-100 /x and a diameter of 8-14 n; spores 

 ellipsoid-fusoid, hyaline, or pale-yellowish, straight, or slightly 

 curved, 4-6 X 15-20 ^i paraphyses filiform, very slightly en- 

 larged above, 1.5-3.5 n in diameter. 



On branches of Rhamnus alnifolia. 



