$modus 0: smartphone
$modus 1: smartphone
Helenium flexuosum
Helenium flexuosum Raf. [Accepted]
Compositae
6 499863 Helenium flexuosum Raf.
Addisonia, vol. 20 : t. 667 (1938) [M. Sorensen]
Helenium flexuosum Raf.
D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 774 a,b (1972) [V. Frazier]