Variegated Leaves. 285 



1896 from some self-fertilized variegated Oenothera La- 

 niarckiana, although these two sorts are ordinarily con- 

 stant from seed. Variegated Oenothera rubrinervis gave 

 rise to 20% variegated seedlings (1892), but on a repe- 

 tition of the experiment with another plant (1893) all the 

 offspring were green. 



In sectorial variegation we might expect the seeds of 

 the variegated sectors to give rise to more variegated 

 plants than those of the green ones. The only informa- 

 tion relating to this question as far as I know is due to 

 Heinsius.^ He found a stem of Dianthus harhatns, one 

 of the longitudinal halves of which was variegated, whilst 

 the other w^as colored in the ordinary way. During the 

 flowering period the plant was protected from insects by 

 gauze and artificially fertilized, each flower being polli- 

 nated wath pollen from another in the same longitudinal 

 half. On the one half the capsules were white, on the 

 other green ; both produced ripe seed. The seeds of the 

 white fruits produced seedlings without chloroi)hyll but 

 the seedlings from green capsules were the normal green. 

 In 1888 I myself collected the green and the variegated 

 fruits of a sectorial main stem of Oenothera Lamarckiana 

 separately. The seeds of the former gave rise almost 

 exclusively to green plants, those of the latter to a large 

 proportion of variegated ones. In the summer of 1895 

 I saved the fruits from a green and from a variegated 

 branch of the same plant of this species, but both sets of 

 seeds gave about the same very small proportion of varie- 

 gated specimens, viz., 2%. 



In the summer of 1898 I conducted a more exhaustive 



research with sectorial variegation in Oenothera La- 



^ H. W. Heinsius in the Proceedinp^s of the Gcnootschap ter 

 hevordcring dcr Natuur- Genees- en H eclkunde te Amsterdam, fleet- 

 ing of May 7, 1898. 



