Plants with yellow or green flowers and opposite leaves - grassland
 Ambrosia artemisiifolia (Annual Ragweed) |
 Ambrosia psilostachya (Perennial Ragweed) |
 Arnica fulgens (Shining Arnica) |
 Asclepias viridiflora (Green Milkweed) |
 Atriplex hortensis (Garden Orache) |
 Clematis tangutica (Yellow Clematis) |
 Coreopsis tinctoria (Tickseed) |
 Crepis runcinata (Scapose Hawk's-Beard) |
 Dyssodia papposa (Fetid-Marigold) |
 Helianthus maximiliani (Narrow-Leaved Sunflower) |
 Helianthus nuttallii (Common Tall Sunflower) |
 Helianthus pauciflorus ssp. subrhomboideus (Beautiful Sunflower)) |
 Helianthus petiolaris (Prairie Sunflower) |
 Iva axillaris (Poverty-weed) |
 Lysimachia ciliata (Fringed Loosestrife) |
 Madia glomerata (Tarweed) |
 Neoholmgrenia andina (Upland Evening Primrose) |
 Paronychia sessiliflora (Low Whitlowwort) |
 Picradeniopsis oppositifolia (Opposite-Leaved Bahia) |
 Shepherdia argentea (Silver Buffaloberry) |
 Shepherdia canadensis (Canada Buffaloberry) |
 Silene drummondii (Drummond's Cockle) |