Mutations 



57 



flowers which have persisted for a long time are thought to 

 be mutations from single types. Some of the first re- 

 corded appearances of double flowers were described in 

 1671 by Abraham Hunting in a 

 book called, "Waare Oeffeninge 

 der Planten" or "True Exercises 

 wjth Plants." This large book 

 on garden plants contained a 

 long list of double flowers which 



FIG. 13. Anemone coro- 

 naria, single-flowered 

 form. 



FIG. 14. Anemone coronaria, semi- 

 double-flowered form. 



were found growing in gardens at that time. Double 

 flowers of such plants as poppies, liver-leaf (hepatica), 

 wallflowers (cheiranthus) , violets, caltha, althea, colchium, 

 and periwinkle (vinca), were described. 



