Trees, Shrubs and Vines 



These general facts of plant-structure, with the added glossary, 

 suffice to explain all of the more technical terms used in the fol- 

 lowing descriptions. In the case of white-blossoming shrubs, it 

 must be noted, first of all, whether the petals are distinct, or 

 somewhat cohering by their edges (i.e., whether the flower is 

 polypetalous or monopetalous], as the first two groups are based 

 upon this difference : p. means polypetalous ; m. means mono- 

 petalous. 



418 



