88 The North American Cup-Fungi 



asci cylindric or subcylindric, reaching a length of 120-150 /x 

 and a diameter of 6-10 /i, 8-spored; spores ellipsoid, 5-6 X 8-10 ju; 

 paraphyses slender, 3 /x in diameter, slightly enlarged above. 



On old acorns, Quercus. 



Type locality: Europe. 



Distribution: New Jersey to Iowa; also in Europe. 



Illustrations: Rab. Krypt. Fl. P: 800,/. 1-5; Phill. Brit. 

 Discom. pi. 5,f. 25; Boud. Ic. Myc. pi. 480. 



ExsiccATi: Ellis, N. Am. Fungi 983 (as Peziza pseiidotiiherosa 

 Rehm). 



7. Ciboria aestivalis (Pollock) Whetzel; Harrison, Mycologia 27: 

 317. 1935. 



Sclerotinia aestivalis Pollock; Harrison, Mycologia 27: 303. 1935. 



Apothecia from one to fifty on a single mummified apple, 

 stipitate, light reddish-brown, at first cup-shaped, discoid at 

 maturity, 1-7 mm. in diameter, with radiating ridges and furrows 

 outside; stem rarely reaching 1 cm. long, .5 mm. thick; asci 

 clavate or nearly cylindric, reaching a length of 50-85 n and a 

 diameter of 6-8 /z, 8-spored; spores narrow ellipsoid, 2-3.5 X 



6-12 M. 



On mummified fruits, especially apples. Mains sp. in the 

 early spring. 



Type locality: Ann Arbor, Michigan. 



Distribution: Michigan and Maryland?; also in Australia 

 on various fruits. 



Illustrations: Mycologia 27: 310,/. /I; 312,/. 5. 



8. Ciboria americana Durand, Bull. Torrey Club 29: 461. 1902. 

 Rutstroemia americana White, Lloydia 4: 188. 1941. 



Apothecia solitary, stipitate, cup-shaped, usually becoming- 

 plain or with the margin reflexed and umbilicate, thin, waxy- 

 membranous, pale-cinnamon to brown, 3-10 mm. in diameter; 

 stem 2-10 mm. long, slender; asci clavate, usually curved, 

 reaching a length of 75 n and a diameter of 9 /i, 8-spored; spores 

 2-seriate, hyaline, smooth, ellipsoid to ovoid, slightly unsym- 

 metrical, 4-5 X 9-12 ju; paraphyses filiform. 



On stromatized involucres of Castanea vesca lying on the 

 ground among leaves. 



Type locality: Ithaca, New York. 



Distribution: New York and Pennsylvania to Ontario. 



