Ill] 



ERYSIPHALES 



89 



In Phyllactinia there is evidence that the number of main strands 

 corresponds to the number of chromosomes, and that, in fact, these persist 



Fl g- 47- Phyllactinia Corylea (Pers.) Karst.; a. metaphase of first division in ascus; b, ana- 

 phase of first division ; c. anaphase of second division in ascus ; d. anaphase of third 

 division; after Harper. 



throughout the resting stages that intervene between successive divisions, 

 and fuse in pairs after nuclear fusion. 



ERYSIPHACEAE: BIBLIOGRAPHY 



1895 HARPER, R. A. Die Entwickelung des Peritheciums bei Sphaerotheca Castagnei. 

 Ber. d. deutsch. Bot. Gesell. xiii, p. 475. 



1896 HARPER, R. A. Uber das Verhalten der Kerne bei der Fruchtentwickelung einiger 

 Ascomyceten. Jahrb. fur wiss. Bot. xxix, p. 655. 



1897 DANGEARD, P. A. Second memoire sur la production sexuelle des Ascomycetes. 

 Le Botaniste, v, p. 245. 



1897 HARPER, R. A. Kernteilung und freie Zellbildung im Ascus. Jahrb. fiir wiss. Bot. 



xxx, p. 249. 



1900 SALMON, E. S. A Monograph of the Erysiphaceae. Mem. Torrey Bot. Club, ix, p. I. 

 1903 NEGER, F. W. Neue Beobachtungen iiber das spontane Freiwerden der Erysipheen- 



fruchtkorper. Centr. f. Bakt. Parasit. u. Infekt. ii, Abt. x, p. 570. 

 1905 BLACKMAN, V. H. and FRASER, H. C. I. Fertilization in Sphaerotheca. Ann. Bot. 



xix, p. 567. 

 1905 HARPER, R. A. Sexual Reproduction and the Organisation of the Nucleus in Certain 



Mildews. Publ. Carn. hist. Washington. 



1905 SALMON, E. S. On Endophytic Adaptation shown by Erysiphe graminis D.C. 

 under cultural conditions. Phil. Trans, cxcviii, p. 87. 



1906 SALMON, E. S. On Oidiopsis taurica an Endophytic member of the Erysiphaceae. 

 Ann. Bot. xx, p. 187. 



1907 DANGEARD, P. A. L'origine du perithece chez les Ascomycetes. Le Botaniste, x, 

 p. 216. 



1907 SALMON, E. S. Notes on the Hop Mildew. Journ. Agr. Sci. ii, p. 327. 



1907 SANDS, M. C. Nuclear Structure and Spore Formation in Microsphaera Aim. Trans. 



Wisconsin Acad. Sci., Arts and Letters xv, pt. 2, p. 733. 

 1911 WINGE, O. Encore le Sphaerotheca Castagnei. Bull. Soc. Myc. de France, xxvu, 



p. 211. 



