64 THE GROWTH AND PARTS OF PLANTS 
the elm, the oak, the lilac, and the hawthorn leaf. You 
see the blade is all in one piece, although the elm leaf 



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Fic. 94. Elm leaf (stipules where the leaf 
is joined to stem). 
is notched on the 
edge, and the haw- 
thorn leaf is deeply 
scalloped. Where — 
the blade of the leaf 
is In one piece it is 
called a simple leaf. 
How many pieces 
are there in the 
blade ‘of a bean leaf? a clover leaf? of the oxalis, pea, 
-ash, elder, and horse-chestnut leaves? If you do not find 
all these plants, you may find others which have leaves 
somewhat like them. Perhaps you 
thought each.one of the pieces of 
the blade was the entire leaf. But 
see where the stalk of the leaf joins 
the stem. The leaf stalk and all 
that it supports is one leaf. We 
call such leaves as these compound. 
Do you know a compound fern leaf ? 
The pieces of each compound leaf 
are called leaflets. Each leaflet is 
supported on the leaf stalk by a 

Fig. 95. Compound leaf 
of ash. 
stalklet. Tf you can find some of the different kinds of 
compound leaves, make drawings to show the shape, and 
