Seeds for the Garden 121 
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Fic. 72. The two kinds of flowers borne on a summer squash plant; u, pis- 
tillate flower, complete; 8, pistillate flower with calyx and corolla removed to 
show the pistil; c, staminate flower, complete; d, staminate flower with calyx 
and corolla removed to show the cluster of stamens. 
(4) Brussels sprouts, in which the buds on the sides of 
the stem develop as small heads; and 
(5) cauliflower, in which the first flowering branches 
are thickened and fleshy. 
Selection of seed has given us all these different types 
of the cabbage group, and further selection has also 
developed many varieties of each of these different types. 
Thus there are now many kinds of cabbages, differing 
in size and shape of the head, in color, and in the length 
of time required for growth. 
Crossing the white scallop pumpkin with the crook- 
neck pumpkin (usually called summer squash) gives in 
‘the second generation many types of fruit, varying in 
