F. Kkeblk 167 



TABLE II. 

 The Origin of Giant White Queen Star. 



1903 White Qaeen Star (W. Q. S.) raised from seed 



1904 = normal W. Q. S. 



selfed 



1905 F] plants with occasional 6-petalled flowers : most flowers normal 



I 

 selfed 



1906 Fi plants with occasional 6- and 7-petalled flowers : most flowers 



normal | 



selfed 



10 plants, all with slight fimbriation of edges of petals, 8 with 1 

 or more 6-petalled flowers : petals large, selfed 1 plant 



11 plants : flowers large, of good substance ; petals meeting or over- 

 lapping. Flower slow in opening ; slight fimbriation of edges 

 of many petals = (Hant White Queen Star, see Plate XI, fig. 2. 



selfed 

 3 plants all true to Giant form and habit 



7 ,, ,, ,, selfed 



8 plants all trne to Giant form and habit 



1 plant 



2 plants „ „ „ selfed 

 6 plants all true to Giant form and habit selfed 

 1 plant „ „ „ 

 30 plants all true to Giant form and habit 



these "mutants" is illustrated in Plate XI, figs. 1, 2 — and a com- 

 parison of the giant and normal forms shows how markedly they dififer 

 the one from the other. The differences between the two forms are not 

 confined to the flowers, though they are most patent in the petals 

 (cf. Fig. 1). Giant White Queen Star, the origin of which is now 



Fig. 1. Corolla of Normal and of Giant White Queen Star. 

 Joam. of Gen. n 12 



