376 



Tricotylous Races. 



side of the stem.^ I found these torsions not only in 

 my own races but also on tricotylous individuals raised 

 from commercial seed of Anagallis grandifiora, Collinsia 

 bicolor, C.heterophylla, C.violacea, Dianthus phunarius, 

 Fcdia scorpioides, Scabiosa atropiirpurea nana, Silene 

 noctiflora and Zinnia clcgans. Also in the second gen- 

 eration of Aspenila azurea sctosa and Viscaria ocidata? 



Fig. 8i. Antirrhinum majiis. Seedlings with terminal leaves 

 A, tricotylous ; the others are atavists from the same 

 race. A, B, with a single terminal leaf; C, the two 

 leaves of the first whorl fused laterally and placed termi- 

 nally; D, a terminal pitcher formed of two leaves. 



Lastly I wish to refer to a tetracot3dous plant of 

 Melainpyrum pratense (Fig. 80), whose first leaves above 

 the cotyledons, instead of being decussate, were arranged 

 in a very irregular spiral. I found it in the summer of 

 1887 growing wild not far from 'S Graveland. It is 

 important, because it shows that even a splitting of both 



* F'gured in Ber. d. d. hot. Ges., Vol. XII, PI. II, Figs. 9 and 10. 



^ Ber. d. d. hot. Ges., loc. cit., pp. 32-35 ; see the figures on Plate II 

 of this article. 



