a ie 
7 
ra hee Ta Mf. 
qe 
orm A bee 
Pe: : 
= Q 
ie 
N the plants we have been 
considering hitherto, five and 
its multiples have been con- 
spicuous in the arrangements 
of the floralwhorls. Individual 
plants or species have shown 
a tendency to vary to four or 
a higher number not strictly a multiple of five, and 
in some of these the reason may be found. But in 
the Poppy family, which has but few representatives 
in this country, we find a remarkable uniformity in 
the number of flower-parts. Two is the distinguishing 
number: two sepals, four (2+2) petals, stamens and 
stigmas some multiple of two. The plants are re- 
markable for an abundance of juice, which readily 
flows if the stems or leaves be broken. Our native 
species may be separated into two groups by the 
colour of this juice, one set having a white milky sap, 
and in the others it is yellow. Further, the possession 
of yellow juice is correlated with yellow flowers, and 
78 
