Yarrow, Common Yarrow, Milfoil: Achillea millefolium (Synonyms: Achillea borealis, Achillea lanulosa) -
Blow Wives: Achyrachaena mollis -
Tarweed, Woodland Tarweed: Anisocarpus madioides (Synonym: Madia madioides) -
Chamomile: The Genus Anthemis -
Arnicas: The Genus Arnica -
Balsamroots: The Genus Balsamorhiza -
English Daisy, Lawn Daisy: Bellis perennis -
Bur Marigolds and Beggarticks (Beggar Ticks): The Genus Bidens -
Blepharipappus, Rough Eyelashweed: Blepharipappus scaber (Synonyms: Blepharipappus scaber ssp. laevis, Blepharipappus scaber ssp. scaber, Blepharipappus scaber var. scaber)
Boltonia: Boltonia asteroides var. recognita -
Alkali Aster, Short-ryaed Aster: Brachyactis frondosa (Synonyms: Aster frondosus, Symphyotrichum frondosum) -
Tackweeds: The Genus Calycadenia -
Few-flowered Aster, Great Northern Aster, Giant Mountain Aster: Canadanthus modestus (Synonym: Aster modestus) -
Spikeweeds: The Genus Centromadia -
Weedy Dogfennel: Chamaemelum mixtum (Synonyms: Anthemis mixta, Cladanthus mixtus) -
Corn Marigold, Corn Chrysanthemum: Chrysanthemum segetum (Synonym: Glebionis segetum) -
Hall's Goldenweed: Columbiadoria hallii (Synonym: Haplopappus hallii) -
Horseweeds: The Genus Conyza -
Coreopsis and Tickseeds: The Genus Coreopsis -
Prostrate Beach Aster, California Aster: Corethrogyne filaginifolia var. californica (Synonyms: Corethrogyne californica var. obovata, Corethrogyne obovata, Lessingia filaginifolia var. californica) -
Common Spring-gold, Gold-star, Gold Star, Spring-gold, Spring Gold: Crocidium multicaule -
Hoary Asters: The Genus Dieteria (formerly the Genus Machaeranthera) -
Plantain False Leopardbane: Doronicum plantagineum -
Goldenweeds, Heath Goldenrods and Rabbitbrush: The Genus Ericameria -
Daisies and Fleabanes: The Genus Erigeron -
Woolly Sunflowers: The Genus Eriophyllum -
Asters: The Genus Eucephalus -
Asters: The Genus Eurybia -
Western Goldenrod, Western Goldentop: Euthamia occidentalis (Synonym: Solidago occidentalis) -
Blanket Flower, Common Gaillardia, Great-flowered Gaillardia: Gaillardia aristata -
Galinsogas and Quickweeds: The Genus Galinsoga -
Gumplants and Gumweeds: The Genus Grindelia -
Whitney's Bristlehead, Whitney's Goldenweed: Hazardia whitneyi var. discoidea (Synonyms: Haplopappus whitneyi, Haplopappus whitneyi ssp. discoideus) - Discoid flower heads.
Sneezeweeds: The Genus Helenium -
Sunflowers: The Genus Helianthus -
Least Tarweed, Miniature Tarweed, Opposite-leaved Tarweed, Smallhead Tarweed, Small-head Tarweed, Small-headed Tarweed: Hemizonella minima (Synonyms: Hemizonia minima, Madia minima) -
Hayfield Tarweed: Hemizonia congesta ssp. clevelandii (Synonym: Hemizonia clevelandii) -
Goldasters and Goldenasters: The Genus Heterotheca (formerly the Genus Chrysopsis) -
Elecampane, Inula: Inula helenium -
Fleshy Jaumea, Marsh Jaumea: Jaumea carnosa (Synonym: Coinogyne carnosa) -
Bolander's Tarweed: Kyhosia bolanderi (Synonym: Madia bolanderi) -
Slender Hareleaf, Common Rabbitleaf, Branched lagophylla: Lagophylla ramosissima -
Goldfields: The Genus Lasthenia -
Shasta and Oxeye Daisies: The Genus Leucanthemum -
Tarplants and Tarweeds: The Genus Madia -
Wild Chamomile, Sweet False Chamomile: Matricaria recutita (Synonym: Matricaria chamomilla) -
Alpine Asters: The Genus Oreostemma -
Butterweeds and Groundsels: The Genus Packera -
Goldenweeds: The Genus Pyrrocoma -
Bristlehead, Wireweed: Rigiopappus leptocladus -
Coneflowers: The Genus Rudbeckia -
Butterweeds, Groundsels and Ragworts: The Genus Senecio -
White-topped Asters: The Genus Seriocarpus -
Goldenrods: The Genus Solidago -
Asters: The Genus Symphyotrichum -
Lyall's Goldenweed, Lyall's Serpentweed: Tonestus lyallii (Synonym: Haplopappus lyallii) -
False Mayweeds: The Genus Tripleurospermum -
California Compass-plant, Narrowleaf Wyethia, Narrow-leaved Mule's Ears: Wyethia angustifolia (Synonyms: Alarconia angustifolia, Wyethia angustifolia var. angustifolia, Wyethia angustifolia var. foliosa) -