Answer: You have a number of choices! I've listed those which are Florida natives or have naturalized in your gardening region. They will be able to take the hot afternoon sunshine, along with reflected heat.
Callicarpa americana (American beautyberry) is a shrub, 6-9 feet in height. It is characterized by its attractive foliage and clusters of flowers.
Pinus clausa var. immuginata (Choctawhatchee sand pine) is a small tree, seldom more than 25 feet in height, the trunk 1 foot in diameter.
Ptelea trifoliata (common hoptree), a large shrub, or sometimes a small tree, 20-25 feet in height, trunk 6-12 inches in diameter. It has a straight, slender trunk and a broad, rounded crown, with numerous short, stout, erect, and ascending branches.
Cercis canadensis (eastern redbud), is usually a shrub or small tree, with a narrow, erect or spreading, flattened or rounded crown.
Vaccinium arboreum (tree sparkleberry) is a small, bushy tree, sometimes reaching a height of 30 feet and the trunk a diameter of 10 inches. It is usually much smaller. It is characterized by a short, crooked bole, contorted branches, and a dense, round crown.
Acer barbatum (Florida sugar maple) is also a good choice.
Hope one of these suggestions is just right for your landscape.
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