THE SNAP-DKAGON FAMILY 379' 



further precautions against error, such, for example, as the 

 artificial pollination of the plants employed. 



Such a variable species as this is likely to give evidence 

 of some value for or against de Vries's Mutation theory 

 (v. p. 370), and it also throws some light on the wonderful range 

 of forms of Veronica sometimes found in a single locality. So 



Fig. 1-2/6. Veronica Traversii (J nat. size). 



numerous are these, and so difficult of discrimination, that 

 Baron Miiller once proposed to solve all difficulties, by lumping 

 together all species then known from New Zealand under one 

 .specific name! 



Veronica monticola (The Mountain-loving Veronica). 



Leaves close-set, more or less overlapping, in.-l in. long, i in.-^in. broad, 

 narrowed into a short, thick petiole, slightly concave above, but not keeled 

 beneath. Racemes 1 in.-l in. long, dense-flowered. Flowers white, in. 

 -across. Mountain districts from Nelson to Otago. Fl. Dec. -Feb. 



