GLOSSARY OF BOTANICAL TERMS 187 



and this causes slight differences in the ar- 

 rangements of the various Floras published. 

 Some botanists consider the differences be- 

 tween two plants so slight as to constitute the 

 second merely a variety of the first; while 

 others would class each as a distinct species. 

 The same discrepancies occur between the 

 larger groups, but these differences in classifi- 

 cation (and consequently in nomenclature) are 

 very few in proportion to the enormous num- 

 ber of plants known to exist. 



