Photo of American feverfew flower cluster.

    American Feverfew

    Parthenium integrifolium
    Photo of false garlic flowers

    False Garlic

    Nothoscordum bivalve
    Photo of several big bluestem seed heads against a blue sky.

    Grasses

    All true grasses (species in the grass family).
    Photo of hedge parsley flower clusters

    Hedge Parsley

    Torilis arvensis
    Photo of a large-flowered gaura inflorescence

    Large-Flowered Gaura

    Oenothera filiformis (formerly Gaura longiflora, G. biennis)
    Photo of whorled milkweed flowers.

    Milkweeds

    Subfamily Asclepiadoideae
    Photo of pale Indian plantain flower clusters.

    Pale Indian Plantain

    Arnoglossum atriplicifolium (also Cacalia atriplicifolia)
    Photo of a prairie dock flowerhead

    Prairie Dock (Prairie Rosinweed)

    Silphium terebinthinaceum
    Photo of royal catchfly flowers

    Royal Catchfly

    Silene regia
    Photo of eastern woodland sedge plant growing among leaf litter.

    Sedges

    Carex, Schoenoplectus, Scirpus, and other genera
    Photo of many blooming ashy sunflower plants, showing gray-green leaves.

    Sunflowers

    Helianthus spp.
    Photo of white heath aster flowers

    White Heath Aster

    Symphyotrichum pilosum (formerly Aster pilosus)