Plants with yellow or green flowers
 Caltha palustris (Marsh Marigold) |
 Caragana arborescens (Common Caragana) |
 Chenopodium glaucum (Oak-Leaf Goosefoot) |
 Chenopodium leptophyllum (Narrow Leaved Goosefoot) |
 Chenopodium simplex (Maple-Leaved Goosefoot) |
 Chenopodium subglabrum (Smooth Goosefoot) |
 Chrysosplenium iowense (Golden Saxifrage) |
 Clematis tangutica (Yellow Clematis) |
 Coeloglossum viride (Long-bracted Orchid) |
 Corallorhiza trifida (Green Coralroot, Early Coralroot) |
 Coreopsis tinctoria (Tickseed) |
 Corydalis aurea (Golden Corydalis) |
 Crepis occidentalis (Small-Flowered Hawk's-Beard) |
 Crepis runcinata (Scapose Hawk's-Beard) |
 Crepis tectorum (Narrow-Leaved Hawk's-Beard) |
 Cyclachaena xanthifolia (False Ragweed) |
 Cypripedium parviflorum var. makasin (Small Yellow Lady's Slipper) |
 Cypripedium parviflorum var. pubescens (Large Yellow Lady's Slipper) |
 Dasiphora fruticosa (Shrubby Cinquefoil) |
 Descurainia sophia (Flixweed) |
 Diervilla lonicera (Bush Honeysuckle) |
 Draba nemorosa (Yellow Whitlow-Grass) |
 Dyssodia papposa (Fetid-Marigold) |
 Elaeagnus commutata (Wolf-Willow) |
 Ericameria nauseosa (Rabbitbrush) |
 Eriogonum flavum (Yellow Umbrellaplant) |
 Erucastrum gallicum (Dog Mustard) |
 Erysimum capitatum (Western Wallflower) |
 Erysimum cheiranthoides (Wormseed Mustard) |
 Erysimum inconspicuum (Small-Flowered Prairie-Rocket) |
 Euphorbia esula (Leafy Spurge) |
 Euthamia graminifolia (Flat-Topped Goldenrod) |
 Fallopia convolvulus (Wild Buckwheat) |
 Gaillardia aristata (Blanketflower) |
 Galium aparine (Cleavers) |
 Galium triflorum (Sweet-Scented Bedstraw) |
 Geocaulon lividum (Northern Comandra) |
 Geum aleppicum (Yellow Avens) |
 Geum macrophyllum (Large-Leaf Avens) |
 Glycyrrhiza lepidota (Wild Licorice) |