I30 po 6 t e I 9 ia 



in point of number of species by three dicotyle- 

 donous families, the Rosacece with i8,the Com- 

 posiicB with 14 and the Saxijragacece with 12. 

 Since grasses, sedges and rushes nearly always 

 build compact groups or societies with numerous 

 individuals, it follows that a considerable array 

 of species of these types means a considerable 

 occupation of the available ground. 



Among the dicotyledonous families, aside 

 from those mentioned above, the Ericacece show 

 9 s])ecies, the Scrophulariacecc 9, the Ranun- 

 culacccc 7 and so on in decreasing number. Of 

 the 52 angiospermous families 18 are represented 

 by but a single species each. 



In giving the above figures the writer is well 

 aware that the attempts to convey an idea of 

 the aspect of vegetation and the floral composition 

 of a given region by means of statistics, and per- 

 centages especially, are often misleading and many 

 times prove good as useless. This is partly due 

 to the fact that statistics and percentages, based 

 on a bare enumeration of families, genera and 

 species do not incorporate the right elements of 

 proportion and color, and futhermore do not al- 



