Your search found 18 image(s) of involucral bracts of DYCs with ray flowers only (no disc).
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American Wild Lettuce,
Orange-yellow flowers extend slightly from urn-shaped involucral cylinders, per Forest Plants of the Southeast and Their Wildlife Uses.
Sonchus arvensis var. glabrescens
Heads 30-50mm across in flower. Phyllaries and peduncles glabrous, per Weakley's Flora.
Carolina False Dandelion,
Inner bracts in 1 series, outer bracts shorter & in several series, per Vascular Flora of the Carolinas.