R. P. Gregory 



119 



ters of the i'Vs from the various crosses which have been made are 

 s^howu below : 



Number of 

 families 



" Duchess " X Dominant White 1 



"Duchess" xFi (Dominant White x "Snowdrift") 2 



"Duchess" X Rosy-Magenta ... 1 



Description 

 21 plants. White, petals tinged, no 



tinge in tube. 

 28 plants. White, no tinge seen. 

 42 plants. White, with faint tinge 



in petals ; no tinge in tube. 

 8 plants. White, with distinct tinge 



in tube. 

 White, no tinge seen, 15 plants ; 



White, tingedin tube, 14 plants. 

 12 plants. White, rather fully 



tinged in petals. 



The Fo from the cross between " Duchess " and " Snowdrift " con- 

 tains a long series of types, for to the various inhibited and coloured 

 forms corresponding with those obtained in the F., from (Dominant 

 white X Coloured, red stigma) there are added the " Sirdars," pale- 

 pinks and whites on green stems which are characteristic of the F^'s 

 from crosses between "Snowdrift" and plants possessing the factors for 

 colour. And since the "Duchess' used in these experiments was of 

 the red class, red as well as magenta forms of each coloured type are 

 present. The numbers obtained in three families were : 



Red stems 



Green stems, red collar 

 (" Sirdar " types) 



Pale-pinks 



Whites 



Green stigma Red stigma Green stigma 



Tinged 



White and white and 



Tinged white Coloured Coloured White Sirdar 



117 47 37 47 14 



Red stigma 



Tinged 



White Sirdar 



Red 

 collar 



No colour No colour 



seen in seen in 



stem stem 



18 



19 



56 



The tinged whites with green stigma are of two kinds, namely, 

 (1) those which resemble the Fi in having a more or less evenly 

 distributed tinge, which becomes more pronounced as the flowers fade, 

 and (2) those with a definite central tinge surrounding the eye and 

 most conspicuous in the young flower. All the tinged whites with red 

 stigma have the colour disposed in the centre after the "Duchess" 

 style. 



At the time when these families were recorded the distinctive 

 character of the forms resembling "BuUer" had not been recognized, and 

 some of them were included with the class " Coloured, red stigma " ; 

 in the table the two clas.ses of red-stemmed plants with red stigma are 

 therefore taken together ; it will be noticed that there is a deficiency 



