﻿450 Stout: The Origin of Dwarf Plants 



Vries, Hugo de. 



1901. Die Mutationstheorie. Vol. I. Leipzig. 



1904. Species and varieties. Their Origin by Mutation. Chicago. 



1909. The mutation theory. Vol. I. Translation by Farmer (J. 



B.) and Darbishire (A. D.) Chicago. 

 1913. Gruppenweise Artbildung unter spezieller Beriicksichti- 



gung der Gattung Oenothera. Berlin. 



Kxplauatlon of plates 26-27 



To the left, typical plant of the dwarf form of Hibiscus oculiroseus (Plant No, 

 14 of Series VIII). To right typical plant of the robust form (Plant No. 23 of 

 Series IX). Photograph taken September 13, 1914. Both plants are seven months 



View in garden. In center with marker in the midst is a series (Series VIII) 

 of dwarf plants. Plant indicated at a i 

 hybrids between H. oculiroseus (Plant O No. 2 



pink-fiowered forms of H. Moscheutos. The t 



