Breeding experiments which show that hybridisation and mutation etc. 245 



Table IV. 

 Intermediates between R and r. 



6 "p. 



Leaf 



"^ formulai) 



Pigmentation of bud 



Recorded 

 as 



56 

 57 

 58 



58 

 58 

 58 

 58 

 60 



60 

 60 



60 



65 



65 

 67 



68 



68 

 68 

 68 

 68 



74 



II. II 

 I. 15 



n- 3 



II. II 

 I- 13 

 I. 17 



II. 17 

 III. 8 



III. 10 



III. 13 



II. 18 



III. 7 



III. 12I 



11- 3 ! 



IV. 7 ; 



IV. 8 I 

 IV. 9 I 

 III. io| 

 III. 12 



VI. 2 



ps 

 ps 

 ps 



ps 

 ps 

 ps 



ps 

 ps 



ps 

 ps 



ps 



p.s 



be 



ps 

 ps 



ps 

 ps 

 ps 

 ps 



; p.s 



sepals rubrinervi'i 5 (-) -)- traces on h^-panthium . . 

 sepals riibrinervii 7 -\- hypanthium half red .... 

 R, sepals rather pale -j- hypanthium very pale with 



green streaks 



sepals R -\- hypanthium pale with green streaks . . 

 sepals if, pale red -|- hN-panthium half green .... 



sepals R -\- h>'pauthium with green stripes 



sepals R -\- hypanthium with green stripes 



sepals rnbrinervi'i 7, median ridges partly red partly 



green, -\- hypanthium green with red patches . . 

 sepals R, weak red -|- scattered red on hypanth'um 

 sepals R, weak red -}- scattered red on h>-panthium 

 sepals R, weak red -)- scattered red on hypanthium 



sepals rubrinervi<: 7 -\- red steaks on hypanthium . 



sepals rubrinetvi^ 6 weak -f- red steaks on hypanthium 

 sepals R very pale -|- red streaks on hypanthium . 

 sepals pale riibrinervii 7 -\- red median ridge -|- a 



little red on hypanthium 



nearly the same 



sepals R, median ridges red, rest of sepal in some 

 flowers nearly green 



R 

 R 

 R 

 R 

 R 



inter 

 R 

 R 

 R 



R pale 



R r 



ru 



R pale 



cyanin as rubrinervis. In the Fj crosses between ruhricalyx and 

 grandiflora, I did not observe that the buds were distinctly paler red 

 than in ruhricalyx, although it is very probable that less pigment was 

 actually produced. In the F2 from these crosses there was, however, 

 considerable variation in the depth of red, and when the F^ was crossed 

 back with grandiflora there was a very marked reduction in the depth 

 of shade, i. e., in the amount of pigment produced, in all the buds. 



(1) The formulae used in recording the leaf-cliaracters are described in a sub- 

 sequent section (vide infra, p. 254). Ps indicates foliage closely resembling or identical 

 with grandiflora, be with rubricatyx. 



(2) These numbers refer to the width of the red stripes on the sepals of rubri- 

 nervis. (See Gates 191 1 b, plate 6.) 



