Smitlisonlan Rrv..irt. I'»^0.- R'a'<. 



Plate 7 



1 Ma n ]Rr Plant Capsule and Chromosome Models of the Primary (2n-1) 



Type "Poinsettia" 



C !P I" 



/ V / 



2. Mature Plant. Capsule and Chromosome Models of 'Dwarf,' a Sec- 

 ondary of the Primary "Poinsettia " Shown Above 



