OENOTHERA GRANDIFLORA AIT. 241 



9. De Vries, On twin hybrids. Bot. Gaz. 44 : 401-407. 1907. Opera VI, p. 472. 



10. Gates, R. R., Recent papers on Oenothera mutations. New Phytol. 12 : 

 296-302. 1913. 



11. Morgan, Sturtevant, Muller, and Bridges, The mechanism of Mendelian 

 heredity. New York. 1915. 



12. Renner, O., Befruchtung und Embryobildung bei Oenothera Lamarckiana. 

 Flora 7 : 115-150. 1914. 



{The Botanical Gazette, 1918, Vol. LXV, p. 377). 



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