Photo of bird's-foot trefoil, close-up of flower cluster.

    Bird’s-Foot Trefoil

    Lotus corniculatus
    Photo of crown vetch, closeup of a flower cluster.

    Crown Vetch

    Securigera varia (formerly Coronilla varia)
    Poisonous Icon

    Poisonous

    invasive icon

    Invasive

    Photo of everlasting pea flower and leaves

    Everlasting Pea

    Lathyrus latifolius
    Photo of goat's rue showing flower cluster

    Goat’s Rue (Hoary Pea)

    Tephrosia virginiana
    Photo of Indian paintbrush flowers

    Indian Paintbrush

    Castilleja coccinea
    Photo of several Indian pipe plants with flowers, rising out of leaf litter.

    Indian Pipe

    Monotropa uniflora
    Photo of a large-flowered gaura inflorescence

    Large-Flowered Gaura

    Oenothera filiformis (formerly Gaura longiflora, G. biennis)
    Photo of leafy spurge seed heads

    Leafy Spurge

    Euphorbia esula
    Poisonous Icon

    Poisonous

    invasive icon

    Invasive

    Photo of pale corydalis leaves and yellow flowers

    Pale Corydalis

    Corydalis flavula
    Photo of several pinesap plants showing multiple flowers per stalk.

    Pinesap (False Beech Drops)

    Monotropa hypopitys
    Photo of slender bush clover flowers

    Slender Bush Clover

    Lespedeza virginica
    Photo of tick trefoil plant with flowers

    Tick Trefoils (Sticktights; Beggar's Lice)

    Desmodium spp. (17 species in Missouri)
    Photo of wood betony plants with flowers

    Wood Betony (Common Lousewort)

    Pedicularis canadensis
    Photo of wood spurge flowers.

    Wood Spurge

    Euphorbia commutata