Eumycetes. 265 



of stone fruits is caused by the same fungus. In fact, sotne writers 

 assert that the american species is 5. cinerea. 



The present writer has undertaken a comparative study of the 

 twü species. After a historical sketch he gives the differences between 

 5. fyuctigetia and S. cinerea\ he mentions some observations on the 

 behaviour of the t\ingus on fruits and in pure culture and makes 

 a comparison of the conidia of these two species and local Scleroti- 

 nia. Several lists on the measurements of the spores, the asci and 

 the ascospores are given in the paper. 



The 300 experiments on different fruits show in every instance 

 a Wide difference between the S. fructigena of Europe and the 

 american brown rot. First, they differ in the rate of growth, the 

 former being much slower than the latter. Second, the conidial tufts 

 do not agree in size, shape, or color. The 5. cinerea when grown 

 on plums, pears, apples, and quinces agrees in practically every 

 instance with the local Sclerotinia. 



When grown in pure culture, the european 5. fructigena never 

 agreed with the local form; 300 cultures of each were made. The 

 conidia of the former are larger than those of the latter. Those of 

 the latter, however, agree in size with the conidia of S. cinerea. 



While the asci and ascospores of the European S. fructigena and 

 the American form apparently correspond in size, there are diffe- 

 rences that remain distinct. The ascospores of the former are sharply 

 pointed at each end and free from oil droplets, while the ascospores 

 of the latter are rounded at the ends and possess oil droplets. No 

 exception was found to this rule. 



The american brown rot of stone fruits is not identical with 

 5. fructigena occurring in Europe on pome fruits. It agrees more 

 nearly with S. cinerea and should be referred to that species. 



Jongmans, 



Me Cormick, F. A., Development of the Zygospore of 

 Rhisopus nigricans. (Bot. Gazette. LIII. p. 67—68. 1912.) 



This paper contains a preliminary notice on the formation of 

 the zygospor^s of Rhisopus nigricans. A Short description is given 

 of the protoplasmic differentiation before the forming of the game- 

 tangia, of the formation of the walls, cutting off the gametangia 

 from each other. the formation of a coenocentrum in the gametangia 

 and of the occurrence of oil in the zygospore. Jongmans. 



Rehm, H., Ascomycetes ph ilippinenses IV. (Leaflets 

 Philippine Botany. Vol. VI. Art. 96. p. 1935—1947. 1913.) 



This paper contains the enumeration of several philippine 

 ascomycetes and the description of numerous new species. 



Nectriella philippina on Passiflora quadrangularis , Los Banos; 

 Rhopographus hlumeanus, on Banibusa blutneana, Los Banos, 

 belongs to the section Rhopographella ; Rosellinia inoelleriana P. Henn. 

 f. dispersa, Mt. Maquiling, it is not certain whether this fungus 

 really belongs to this species; Rosellinia fuscornaculans on Schiso- 

 stachyus, Mt. Maquiling, probably near 7?. subaena (B. et C) Sacc. ; 

 Zignoella arengae, on Arenga mindorensis, Los Banos; Rhynchostonxa 

 sanguineoatrum, Mt. Maquiling, belongs to the section Rhynchos- 

 tomella Rehm, it is near R. piriforme A. L. Smith, but its perithecia 

 are only black, when they are old, the rostrum is shorter and the 

 spores are larger; Didymosphaeria bhmteae, on Blumea balsatnifera , 



