Your search found 5 image(s) of involucral bracts of Wild Lettuce.
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Involucres 10-15mm long, 3-5mm broad. Bracts imbricate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
American Wild Lettuce,
Orange-yellow flowers extend slightly from urn-shaped involucral cylinders, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
Red Wood Lettuce,
Flowers heads relatively large, the involucres measuring 1/2"+ in height, per Wildflowers of the Southern Mountains (Smith, 1998).
Heads cylindric or tapering inward toward apex. Bracts imbricate, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).