No. 560] GENETIC AL STUDIES ON (ENOTHERA 475 



foliage agreed very closely with the "mutant" Oenothera 

 elliptica obtained by De Vries ( '01, vol. I, pp. 280-284) 

 from Lamarckiana. This plant, 7 dm. high, developed 

 from a rosette with narrow leaves and at maturity pre- 

 sented a foliage of very narrow leaves well illustrated in 



Fig. 15, which shows the top of the main stem. The 



