Photo of pale corydalis leaves and yellow flowers

    Pale Corydalis

    Corydalis flavula
    Photo of southern wild senna showing a flower cluster and a few leaflets.

    Southern Wild Senna

    Senna marilandica (formerly Cassia marilandica)
    Photo of tick trefoil plant with flowers

    Tick Trefoils (Sticktights; Beggar's Lice)

    Desmodium spp. (17 species in Missouri)
    Photo of white sweet clover flower cluster showing stalk and flowers.

    White and Yellow Sweet Clovers

    Melilotus albus and M. officinale
    invasive icon

    Invasive

    Photo of white avens flower and upper stem leaves.