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The example above is a simple map
that contains what cartographers would use in showing where trees
or shrubbery are located. It's a kind of bumpy line that
is made up of a bunch of arcs.
Now I want to add another one of
these shapes to be North of the Rest room.
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1)
First I draw the shape that I want indicate where the shrubbery
will be like shown above. This can be any kind of shape.
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2)
Next I draw a circle that will be used for the arcs of
the line. This should not be too big, but big enough to see the
arcs when printed. When you get a circle that is what you need,
it's a good idea to keep a copy of it on the pasteboard
for later use.
Clone this circle and move
it over to the side.
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3)
Select both circles and Blend them together.
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4)
Now select both the shape you drew in Step 1 and the Blend.
Next go to the Modify menu and choose Combine ->
Join Blend to Path. You should see something similar to the
above example.
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5)
While the Blend is still selected, go into the Inspector palette
and increase or decrease the Blend steps depending on how
big the shape is. The circles should be slightly overlapping
each other like shown in the zoomed example above.
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6)
While the Blend is still selected, Ungroup it. The path
and the Blend should be two separate objects now.
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7)
With both objects selected, go to the Modify menu and choose
Combine -> Union (this can be found in the Operations
palette too).
You should now see the cartographic
tree object like shown above. You are now free to move it and
even color it.
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Now if you saved that original circle
on the pasteboard, you can go back in later and add other bushes
or trees keeping the size of the arcs consistent.
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This is a great technique that will allow
you to not only make cartographic trees, but you can put odd shapes
around the path and get some interesting results as well.
If there is a more technical term for
this kind of line effect other than "Cartographic Trees",
please let me know so I can correctly describe this. 
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