THE CLASSIFICATION OF PLANTS 209 
conditions of soil, climate, or other surrounding circum- 
stances. Mere size or habit of growth has nothing to do 
with the matter, so the botanist finds no difficulty in recog- 
nizing the strawberry plant and the apple tree as members 
of the same family. 
This family affords excellent illustrations of the mean- 
ing of the terms genus, species, and so on. The Rose fam- 
ily contains (among many others) the Pear genus, which 
contains the Apple species, which contains the Greening 
variety. 
260. Grouping of Families.— Families are assembled 
into classes, and these again into larger groups. The 
details of the entire plan of classification are too compli- 
cated for any but professional botanists to master, but an 
outline of the scheme may be given in small space. 
The entire vegetable kingdom is divided into two great 
divisions, the first consisting of eryptogams or spore-plants, 
the second of phanerogams or seed-plants. Here the rela- 
tions of the various subdivisions may best be shown by a 
table 1 (see pages 210, 211). 
1 This is, of course, only for consultation, not to be committed to memory. 
