130 Experiments lolth Primula sinensis 



DESCRIPTION OF PLATES. 



The figures illustrating the colours of the flowers are from water-colour drawings 

 by Miss M. Wheldale. 



PLATE XXX. 



Figs. 1 — 7 illustrate various types of coloration of the stem. 



Fig. 1. Dominant white with deep purplish-red stem. 



Fig. 2. Dominant white with light purplish-red stem. 



Fig. 3. "Orange King," red stem (cf. the more usual purplish-red colour of the stem). 



Fig. 4. " Sirdar." The characteristic distribution of the fjower-colour, which is 



associated with this type of stem, is shown in Plate XXXI, figs. 44, 45. 

 Fig. 5. Green stem, with slight purplish-red colour in young petioles. 

 Fig. 6. "Ivy-leaf." Non-crenate leaves, and monstrous flowers. Stems green, with 



some purplish-red colour in young petioles. 

 Fig. 7. " Snowdrift," stem devoid of sap-colour. 



Figs. 8 — 20 illustrate the colour of the flower of various pure races and F{s. 

 Fig. 8. "Orange King" (cf. fig. 3). 

 Fig. 9. " Crimson King." 

 Fig. 10. "Snowdrift" (cf. fig. 7). 



Fig. 11. "Queen Alexandra" (dominant white, white eye). 

 Fig. 12. "Primrose Queen" (dominant white, large yellow eye). 

 Fig. 13. "Reading Pink." The deepest colour found in association with green stems 



devoid of sap-colour. 

 Fig. 14. F, ("Reading Pink" x" Snowdrift"). 

 Figs. 15 and 16. Young and mature flowers of the Fj from ("Reading Pink " x " Orange 



King"). 

 Fig. 17. Fi ("Crimson King " x " Snowdrift "). 

 Fig. 18. F, ("Crimson King" x Dominant white, ordinary eye). 

 Figs. 19 and 20. Rosy-magenta, young and old flowers. 



PLATE XXXI. 



Figs. 21—43 illustrate the cross between "Crimson King" and "Queen Alexandra." 



Fig. 21 is the Fj; figs. 22—43 illustrate the series of F^ forms. 



Figs. 22 — 20. Inhibited whites, green stigma. 



Fig. 22. White, white eye. 



Fig. 23. White, ordinary eye. 



Fig. 24. Tinged-white, white eye (F, type). 



Fig. 25. Tinged-white, ordinary eye. 



Fig. 20. Fuller tinged-white, tinge central 



