15 
the docks here mentioned, the three inner divisions of the calyx (outer 
covering of flower) in fruiting form a kind of triangular nut, like the 
Fre. 7.—Leaf, fruiting spike, and root of broad-leaved dock. 
grain of buckwheat (to which family, Polygonacex, the docks belong), 
and one or more of these divisions bear on the back a small granule. 
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