Dec, 1922., YASTJDA—ZWEI NEUE ARTEN VON POLY STICTUS. 157 



Kesen-gori, Prov. Rikuzen ; 10. Dez. 1920 (G. Toba). Matsuyama, 

 Prov. Iyo ; 15. Sept. 1916 (H. Yamamoto). Tanabe-machi (20. Aug. 

 1918), Iwata-mura (22. Aug. 1918) und Ikuma-mura (8. Okt. 1918), 

 Nishi-muro-gori, Prov. Kii (N. Ui). Kantama-mura, Toyora-gori, 

 Prov. Nagato ; 20. Dez. 1918 (S. Tsumori). Nishi arita-mura, Hita- 

 gori, Prov. Bungo ; 4. Jan. 1920 (N. Nakayama). Kofuji-mura, Ono- 

 gori, Prov. Bungo ; 9. Aug. 1921 (A. Yasuda). Ins. Ishigaki, Riukiu ; 

 10. Juni 1920 (S. Sumita). Kamodani mura, Naka-gori, Prov. Awa ; 

 2. Nov. 1920 (T. Asa). Berg Minami-daibu, Akocho, Formosa ; 30. 

 Dez. 1920 (E. Matsuda). 



Sendai, 1. Juni 1922. 



Kesnme of the Original Article in Japanese. 



Tokio Hagawara. Genetic Studies of the Corolla-Design in the 

 Morning Glory. 



Of all the colored flowers of the Morning Glories, the one species 

 having a white ring at the margin of the corolla is the most common 

 and which are called the " Hukurin " by the Japanese gardeners. 



That the factor referring to this white ring acts as a simple 

 Mendel ian dominant to the normal, which has already been studied 

 respectively by Takezaki, Miyazawa, Imai and the author. At the 

 same time Takezaki found that some " Hukurin " are recessive to the 

 normal, and after he had reported it I found the same case in my 

 experiments. 



The " Star " is the other corolla- design somewhat like the " Huku- 

 rin " but the peripheral white is not quite of the same width in 

 any part of the petals as the " Hukurin," and is especially wide at 

 the joint of the petals as compared with the other part of the petals, 

 and widely zigzag along the margin of the corolla. In a word, 

 " Star " is a design in which only the central part of the corolla is 

 the color part forming a star-pattern and the other part is white. 



In 1916 I made several crossings between the various varieties 

 for the purpose of studying the inheritance of this character and now 

 find that the factor referring to the " Star " have the interactive 

 relation to the " Hukurin." The factor hypotheses resulting from my 

 experiments are as follows ; 





