154 



On the Reproductive Functional 



[No. 3, 







'-J3 



p 





u 



CD 



By calcu- 









CO 



CD 





CO 



CD 



CD 



lation. 











The 



Table 2. Contd.— Pave and Mixed 

 Unions of Verbascum phceniceum 



3 

 is 

 o 



2 



GO 



o5 , 



CD 



° 6 





OQ 

 CD 



comparative 

 fertility of 



and var. as $ 





=w id 

 O o 



CD 



VI 



o 



<S r Zj 

 * E. 





CD 

 02 



o 



the different 

 unions. 







b D2 



C3 







6 GQ 











d W 



d^ 



6 



► o 



& £ 



d 









^i 



3 



£ 



<1 



b 



fc 





No. 





















2. 



V. phosniceum, rosea, by 

















. 





pollen of V. phceniceum L., 



12 



9 



306 



34 



20 



680 





957.7 



3. 



V. fliosniceivm, alba, by 

 pollen of V. plicenicewm, 





















rosea, 



7 



5 



154 



31 



20 



616 





867.6 



4. 



V. phceniceum, alba by pollen 





















of V. phceniceum, 



16 



11 



287 



26 



20 



522 



.. 



735.2 



5 



V. phceniceum, by pollen of 





















V. phceniceum, rosea, 



10 



8 



193 



24 



20 



483 



, , 



680.3 



6. 



V. phceniceum by pollen of 

















. 





V. phceniceum, alba, 



10 



6 



120 



20 



20 



400 



, . 



563.4 



7. 



V. phceniceum by pollen of 

















. 





V. ferrugineum, Andr., 



12 



7 



148 



21 



20 



423 



., 



595.8 



8. 



V. phceniceum by pollen of 





















V. blattaria, lutea L., 



12 



7 



112 



16 



20 



320 



. ■ 



450.7 



9. 



V. phceniceum by pollen of 





















V. blattaria, alba, 



12 



4 



54 



13 



20 



270 



.. 



380.2 



10. 



V. phceniceum by pollen of 





















V. lychnitis lutea, L., 



12 



8 



102 



13 



20 



255 





359.1 



11. 



V. phceniceum by pollen of 

















. 





V. ovalifolium, ... 



12 



5 



43 



8 



20 



172 





242.2 



In addition to the simple and calculated results given on Table 1, 

 I have, in the above, given at the right hand, for the sake of compari- 

 son, the calculated product from an assumed 1,000 seeds of the pure 

 unions relatively to those yielded by the cross and hybrid unions. 

 By a further comparative study of these results, we find that the 

 fertility of the pure unions of V. phceniceum, relatively to that of its 

 cross-unions with the white and rose-coloured varieties, is, in the 

 least differentiated or most highly fertile unions, viz., V. phceniceum, 

 rosea by pollen of V. phceniceum, as 100 : 95 ; whereas in the 

 least fertile unions, V. phoeniceum by pollen of V. phoeniceum, alba, 

 the proportions are as 100 : 56. The average fertility of the five 

 cross-unions given in the table, relatively to the pure unions given in 

 the first line, is as 100 : 75 ; so that the pure unions thus exceed in 

 fertility the cross-unions, in nearly the proportions of 4:8, Again 



