Trees, Shrubs and Vines 



count of plant structure is given at the end of the book. 

 With those explanations and a little practice in the use 

 of the Keys, the great majority of the following plants 

 can be easily determined ; and even the expert botanist 

 can more quickly identify these three sorts of growth 

 (tree, shrub, and vine) by this method, than by the con- 

 ventional analysis. 



It will be observed that only such details of the blos- 

 som as can be seen without a microscope (with the single 

 exception of the very minute blossoms of the dodder, 

 of which only one species is widely prevalent in our ter- 

 ritory) are referred to throughout this work. 



Length in feet and inches is indicated by the signs 

 ° and ' : thus a leaf 3^-6' is three to six inches long ; a 

 shrub 5°-io° is five to ten feet high. Too much stress 

 must not be laid upon a leafs dimensions, but the figures 

 express the usual limits. The measurement does not 

 include the stem in compound leaves, nor in simple 

 leaves when it is very long. p. means polypetalous. 

 m. means monopetalous. These terms are explained 

 under Plant Structure. A scale of inches is often con- 

 venient. 



Senile of inches. 



180 



