Photo of buffalo bur flower and leaves.

    Buffalo Bur (Kansas Thistle)

    Solanum rostratum
    Poisonous Icon

    Poisonous

    Purple Coneflower

    Purple Coneflower

    Echinacea purpurea
    Photo of a Queen Anne's lace flower cluster, seen from the top
    Photo of cut-leaved teasel showing flowerhead and joined, cuplike leaves.

    Teasels

    Dipsacus fullonum and D. laciniatus
    invasive icon

    Invasive

    Photo of viper’s bugloss, closeup of flower

    Viper's Bugloss

    Echium vulgare