Toxicoscordion paniculatum (Nutt.) Rydb. Toxicoscordion paniculatum (Nutt.) Rydb. in Bull. Torrey Bot. Club 30(5): 272. 1903 sec. POWO 2019=Zigadenus paniculatus (Nutt.) S. Watson, Botany (Fortieth Parallel): 343. 1871 syn. sec. POWO 2019