1925] Mann: Chromosome Number and Individuality in tlie Genus Crepis 313 



Metz, C. W., and Lancefield, R. 



1922. The sex-linked group of mutant characters in Drosophila willisloni. Am. 

 Nat., vol. 56, pp. 211-241. 



Morgan, L. V. 



1922. Non-criss-cross inheritance in Drosophila melanogaster. Biol. Bull., vol. 

 42, pp. 267-274. 



Morgan, T. H. 



1922. Croonian lecture on the mechanism of heredity. Proc. Roy. Soc, Sec. 

 B, vol. 94, pp. 162-197. 



Rosenberg, O. 



1909. Zur Kenntniss von den Tetradentcilungen der Compositen. Svensk. 



Bot. Tidskr., vol. 3, pp. 64-77. 

 1918. Chromosomenzahlen und Chromosomendimensionen in der Gattung 



Crepis. Arch. f. Bot., vol. 15, pp. 1-16. 

 1920. Weitere Untersuchungen liber die Chromosomenverhaltnisse in Crepis. 



Svensk. Bot. Tidskr., vol. 14, pp. 319-326. 

 Tahara, M. 



1910. tjber die Zahl der Chromosomen von Crepis japonica. Bot. Mag., 



Tokyo, vol. 24. 



