Prairie Thistle (Cirsium undulatum) 1923
Wild Basil or Hedge Calaminth (Clinopodium vulgare) - Wil... 1904
Thistle (Cirsium arizonica) 1938
White Thistle (Cirsium hookeranum) 1900
Spear Thistle of Plume Thistle (Cricus lanceolatus) - Wil... 1914
