FLOWERS. 97 
petals, so that it is very hard for insects to get 
inside the flower- bud." 
4. ''Are these petals, Father?" asked Frank, as 
he pointed to the bright flower-leaves of an orchid 
he had picked. 
Forms of Corolla. 
" Half of them are/' rephed Mr. Grey. " That 
is one of the flowers which does not have its outer 
ring of covering leaves green. 
5. " You may see by the flowers in your hand 
that both sepals and petals diff'er very much in 
shape. 
" You cannot always pick them oft* one by one^ 
( M 357 ) G 
