54 The North American Cup-Fungi 



"The disease was observed in Fort Valley, Georgia, from 1924 

 to 1928 and subsequently has been observed in the vicinity of 

 Fayetteville, Arkansas. 



"In 1928, 3 quadrats, each 1 sq. m. in area, were laid out at 

 random under a large tree near Fort Valley, Georgia. Although 

 the total number of seedlings blighted during the period of 

 seedling germination was not ascertained, the counts made on 

 April 4 showed from 34 to 62.5 per cent of the seedlings affected 

 on that date. It is evident from these figures that the disease 

 must be considered as a factor limiting the reproduction of 

 Prunus serotina in the South." 



5. Monilinia demissa (Dana) Honey, Am. Jour. Bot. 23: 105. 



1936. 

 Sclerotinia demissa Dana, Phytopathology 11: 106. 1921. 



Conidia {Monilia) produced in unbranched chains, ovoid to 

 globose, hyaline, cream-colored in mass, simple, 3-9 X 7-14 /x; 

 sclerotia in mummied fruits. 



Apothecia mostly solitary, sometimes two from a mummy, 

 long-stipitate, brown, glabrous, at first cup-shaped, later flat; 

 stem 1 3.5 cm. long; asci hyaline, 8-spored, reaching a length of 

 150-160 M and a diameter of 7 m; spores ellipsoid, 1-seriate, 

 hyaline, one end narrower than the other, 5-6 X 9-15 n; pa- 

 raphyses slender. 



Conidial stage on living leaves, twigs, and fruits of Pnmiis 

 demissa; the perfect stage on overwintered mummies of the 

 same host. 



Type locality: Pullman, Washington. 



Distribution: Known only from the type locality. 



Illustrations: Phytopathology 11: pi. 8,f. 4-6. 



6. Monilinia Amelanchieris (Reade) Honey, Mycologia 34: 575. 



1942. 

 Sclerotinia Amelanchieris Reade, Ann. Myc. 6: 114. 1908. 



Entostroma formed within the fallen, overwintering, mum- 

 mied fruits; microconidia small, 2.5-3.5 m i" diameter, globose, 

 hyaline, associated with mummied fruits containing entostroma, 

 produced at one or both poles of the ascospores remaining in old 

 apothecia, on conidia, on mycelium directly, or on single or 

 clustered, flask-shaped spermatiophores. 



