Info: Entire plant / May 18, 2023 / Sandhills Horticultural Gardens Pinehurst, NC (Visitor center) / License: All rights reserved
Caption: Cardoon #230 nn; LHB p. 1029, 194-99-1, "Involucre spines likened to a dog's tooth."; MBG, "Specific epithet means resembling a small thistle."