1924:] Collins: luht'ritance in Crepis capillaris (L.) Wallr. 281 



Sears, Paul B. 



1922. \'ariation in cytology and gross morphology of Taraxacum. Bot. Gaz., 



vol. 73, pp. 425-446. 



Shoemaker, D. N. 



1919. A study of leaf characters in cotton hybrids. Am. Breed. Assoc, vol. 5, 



pp. 116-119. 



Shull, G. H. 



1914. Uber die Vererbung der Blattfarbe bei Melandriiim. Ber. Deut. Bot. 



Gesellschaft, vol. 31, pp. 41-80. 

 1918. Duplication of leaf lobe factor in Bursa. Brooklyn Bot. Garden, Mem., 

 vol. 1, pp. 427-443. 



1920. A third duplication of genetic factors in shepherds purse. Science, n.s., 



vol. 51, pp. 596. 



1921. Three new mutations in Oenothera Lamarekiana. Jour. Hered., vol. 12, 



pp. 354-363. 



Stork, Harvey E. 



1920. Studies in the genus Tara.raeum. Torr. Bot. Club Bull. 47, pp. 199-210. 



Sturtevant, a. H. 



1921. Genetic studies on Drosophihi shmilans III. Genetics, vol. 6, pp. 179- 



207. 

 Tedin, Olcf 



1923. The inheritance of pinnatifid leaves in Camelina. Hereditas, vol. 4, 



pp. 59—64. 



Trcw, a. H. 



1916. On "albinism" in Senecio vulgaris L. Jour. Gen., vol. 6, pp. 65-74. 



TURESSON, GOTE 



1922. The genotypical response of the plant species to the habitat. Hereditas, 



vol. 3, pp. 211-350. 



