HEREDITY AND THE ORIGIN OF SPECIES. 13 
to five plantlets in every hundred which were widely di- 
vergent from the type, and could, upon maturity, be ar- 
Oenothera rubrinervis, One of the Mutants of O. Lamarckiana. 
A, B, and C, leaves from rosette. D, leaf from middle of flower- 
ing stem. F, flower with petals removed. G, petal. 
ranged in several groups, and in fact constituted several 
Possible. species. One, scintillans, was eversporting, and 
