Your search found 2 image(s) of sepals and bracts of Bindweed and Morning Glory.
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Appalachian Bindweed,
Convolvulus species 2
Here ssp. appalachiana has strongly keeled bracts with overlapping bases, per Bindweeds of Alabama and adjacent states (Spaulding, 2013).
Common Morning Glory,
Ipomoea purpurea
Ipomoea has no bracts below calyx, whereas Calystegia and Convolvulus do, per Wildflowers of the Southern Mountains.