Arnoglossum ovatum (Walter) H.Rob. [ Cacalia lanceolata Nutt.]
      
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Arnoglossum ovatum (Walter) H.Rob. [Cacalia lanceolata Nutt.] Compositae
D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 780 (1972) [unsigned]