MONILINIA 55 



Apothecia one to three, generally one arising as small, pointed 

 fundaments from the entostroma, commonly from the blossom 

 end but may appear at any point, reaching a height of 3 4 cm., 

 cyathoid, 1.5-9 mm. in diameter, stipitate; stem smooth, slender, 

 cylindric, tapering below, 1 mm. thick and reaching a length of 

 3.5-4 cm.; asci cylindric-clavate, reaching a length of 117-188 /n 

 and a diameter of 6-13 /x, 8-spored; spores commonly obliquely 

 1-seriate, ellipsoid, 5.5-9 X 10-15 n; paraphyses moderately 

 abundant, filiform, slightly swollen above, 3.3-5.5 fx in diameter. 



Apothecial stage on overwintering mummied fruits oi Amelan- 

 chier intermedia on the ground during April and May; conidial 

 stage parasitic on Amelanchier intermedia, A. canadensis. A. 

 ohlongijolia and unnamed species of Amelanchier about the 

 middle of June. 



Type locality: New York. 



Distribution: New York. 



7. Monilinia Johnsoni (Ellis & Ev.) Honey, Am. Jour. Bot. 23: 

 105. 1936. 



Cihoria Johnsoni Ellis & Ev. Proc. Acad. Phila. 1894: 348. 1894. 

 Monilia Cralaegi Diedicke, Ann. Myc. 2: 529. 1904. 

 Sclerotinia Crataegi Magnus, Ber. Deutsch. Bot. Ges. 23: 197. 1905. 

 Scleroiinia Johnsoni Rehm, Ann. Myc. 4: 338. 1906. 



Conidial stage {Monilia) on leaves of the host, epiphyllous, 

 effused, ash-gray to olive-buff, the conidia citron-shaped to 

 globose, hyaline, 1 1-20 n in diameter, in long di- and trichoto- 

 mously branched chains with fusiform disjunctors 5-6 /x long; 

 sclerotia formed in mummified fruits. 



Apothecia one to several from a single mummy, 1-4.5 cm. 

 high, long-stipitate, fawn-colored, darker with age; at first closed, 

 then expanding, becoming cup-shaped or saucer-shaped, umbili- 

 cate, reaching a diameter of 3-10 mm.; stem smooth, slender, 

 cylindric, tapering slightly below, reaching a length of 1-4 cm. 

 and a diameter of 1 mm. ; asci cylindric-clavate, reaching a length 

 of 140-150 M and a diameter of 8-10 jx, 8-spored; spores obliquely 

 1-seriate, ellipsoid, hyaline, simple, 6-8 X 12 15 ^\ paraphyses 

 filiform, clavate, hyaline. 



Parasitic on leaves of Crataegus punctata. 



Type locality: Ann Arbor, Michigan. 



Distribution: New York to Michigan. 



Illustrations: Ber. Deutsch. Bot. Ges. 23: pi. 5. 



ExsiCCATi: Ellis & Ev. N. Am. Fungi 3131. 



