| absinth wormwood |
Artemisia absinthium |
2 |
| alkalai marsh aster |
Almutaster pauciflorus |
1 |
| alpine leafybract aster |
Symphyotrichum foliaceum var. foliaceum |
2 |
| alpine sagebrush |
Artemisia scopulorum |
1 |
| beautiful fleabane |
Erigeron formosissimus |
2 |
| big sagebrush |
Artemisia tridentata |
1 |
| blanketflower |
Gaillardia aristata |
2 |
| blue mistflower |
Conoclinium coelestinum |
1 |
| bluemink |
Ageratum houstonianum |
1 |
| bristly oxtongue |
Helminthotheca echioides |
1 |
| broadleaf arnica |
Arnica latifolia |
2 |
| broom snakeweed |
Gutierrezia sarothrae |
1 |
| broomlike ragwort |
Senecio spartioides var. spartioides |
1 |
| bull cottonthistle |
Onopordum tauricum |
1 |
| bull thistle |
Cirsium vulgare |
6 |
| Cainville thistle |
Cirsium calcareum |
1 |
| California goldfields |
Lasthenia californica |
1 |
| Canada goldenrod |
Solidago canadensis |
2 |
| Canada thistle |
Cirsium arvense |
7 |
| Carolina falsedandelion |
Pyrrhopappus carolinianus |
1 |
| Chamisso arnica |
Arnica chamissonis |
1 |
| chicory |
Cichorium intybus |
2 |
| climbing hempweed |
Mikania scandens |
2 |
| coastal nehe |
Lipochaeta lavarum |
1 |
| coastal plain honeycombhead |
Balduina angustifolia |
1 |
| coltsfoot |
Tussilago farfara |
2 |
| common burdock |
Arctium minus |
4 |
| common cocklebur |
Xanthium strumarium |
3 |
| common ragweed |
Ambrosia artemisiifolia |
2 |
| common sunflower |
Helianthus annuus |
3 |
| common tansy |
Tanacetum vulgare |
1 |
| common yarrow |
Achillea millefolium |
5 |
| Coulter's horseweed |
Laennecia coulteri |
1 |
| cup rosinweed |
Silphium perfoliatum |
3 |
| cure for all |
Pluchea carolinensis |
4 |
| curlycup gumweed |
Grindelia squarrosa |
2 |
| cutleaf daisy |
Erigeron compositus |
1 |
| dandelion |
Taraxacum officinale |
1 |
| diffuse knapweed |
Centaurea diffusa |
1 |
| dogfennel |
Eupatorium capillifolium |
2 |
| dubautia |
Dubautia spp. |
2 |
| early goldenrod |
Solidago juncea |
1 |
| eastern baccharis |
Baccharis halimifolia |
3 |
| Eaton's fleabane |
Erigeron eatonii |
1 |
| Fitch's tarweed |
Hemizonia fitchii |
1 |
| Fremont's goldfields |
Lasthenia fremontii |
1 |
| Georgia aster |
Symphyotrichum georgianum |
1 |
| giant ragweed |
Ambrosia trifida |
5 |
| goldenrod |
Solidago spp. |
1 |
| grassleaf Barbara's buttons |
Marshallia graminifolia var. cynanthera |
1 |
| great coneflower |
Rudbeckia maxima |
1 |
| hairy cat's ear |
Hypochaeris radicata |
2 |
| hairy chaffhead |
Carphephorus paniculatus |
4 |
| hairy white oldfield aster |
Symphyotrichum pilosum var. pilosum |
1 |
| Hawai'i silversword |
Argyroxiphium sandwicense ssp. macrocephalum |
4 |
| hawkweeds |
Hieracium spp. |
1 |
| heartleaf arnica |
Arnica cordifolia |
2 |
| horned dandelion |
Taraxacum ceratophorum |
1 |
| horseweed |
Conyza canadensis |
1 |
| Italian plumeless thistle |
Carduus pycnocephalus |
1 |
| Kalealaha beggarticks |
Bidens micrantha ssp. kalealaha |
1 |
| lanceleaf blanketflower |
Gaillardia aestivalis |
1 |
| lanceleaf tickseed |
Coreopsis lanceolata |
2 |
| large mountain fleabane |
Erigeron coulteri |
2 |
| Louisiana wormwood |
Artemisia ludoviciana |
3 |
| Madagascar ragwort |
Senecio madagascariensis |
1 |
| Mauna Kea dubautia |
Dubautia arborea |
2 |
| Mauna Loa beggarticks |
Bidens menziesii |
1 |
| Michaux's wormwood |
Artemisia michauxiana |
2 |
| Missouri goldenrod |
Solidago missouriensis |
1 |
| mountain dubautia |
Dubautia menziesii |
4 |
| mountain thistle |
Cirsium scopulorum |
1 |
| Mt. Albert goldenrod |
Solidago simplex |
4 |
| mugwort |
Artemisia vulgaris |
2 |
| musk thistle |
Carduus nutans |
1 |
| New York ironweed |
Vernonia noveboracensis |
2 |
| nodding beggarticks |
Bidens cernua |
1 |
| orange hawkweed |
Hieracium aurantiacum |
1 |
| oxeye daisy |
Leucanthemum vulgare |
3 |
| Pacific aster |
Symphyotrichum chilense |
1 |
| paleleaf woodland sunflower |
Helianthus strumosus |
1 |
| Parry's arnica |
Arnica parryi |
1 |
| Parry's goldenrod |
Oreochrysum parryi |
2 |
| pearly pussytoes |
Antennaria anaphaloides |
2 |
| pineapple-weed |
Matricaria discoidea |
2 |
| plantainleaf pussytoes |
Antennaria plantaginifolia |
1 |
| prairie sagewort |
Artemisia frigida |
1 |
| prickly lettuce |
Lactuca serriola |
12 |
| pygmy goldenweed |
Tonestus pygmaeus |
1 |
| rayless sunflower |
Helianthus radula |
2 |
| Rocky Mountain goldenrod |
Solidago multiradiata |
8 |
| romaine lettuce |
Lactuca sativa var. longifolia |
1 |
| rubber rabbitbrush |
Ericameria nauseosa |
3 |
| running fleabane |
Erigeron colomexicanus |
1 |
| Russian knapweed |
Rhaponticum repens |
2 |
| safflower |
Carthamus tinctorius |
1 |
| scaly blazing star |
Liatris squarrosa |
1 |
| Scotch thistle |
Onopordum acanthium |
1 |
| shortleaf blazing star |
Liatris tenuifolia |
2 |
| shortray fleabane |
Erigeron lonchophyllus |
1 |
| silk-grass |
Pityopsis graminifolia |
1 |
| slender hawkweed |
Hieracium gracile |
1 |
| spiny cocklebur |
Xanthium spinosum |
1 |
| spotted knapweed |
Centaurea stoebe |
1 |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
1 |
| stemless thistle |
Cirsium tioganum |
2 |
| strawflower |
Helichrysum petiolare |
1 |
| streamside fleabane |
Erigeron glabellus |
1 |
| subalpine fleabane |
Erigeron peregrinus |
1 |
| Suisun Marsh aster |
Symphyotrichum lentum |
2 |
| sunflower |
Helianthus spp. |
2 |
| sweet joepyeweed |
Eupatorium purpureum |
1 |
| tall ironweed |
Vernonia angustifolia |
1 |
| tall lettuce |
Lactuca canadensis |
2 |
| thistle |
Cirsium spp. |
2 |
| treedaisy |
Montanoa hibiscifolia |
1 |
| vanillaleaf |
Carphephorus odoratissimus |
8 |
| wand goldenrod |
Solidago stricta |
1 |
| western aster |
Symphyotrichum ascendens |
5 |
| western salsify |
Tragopogon dubius |
1 |
| whiteplume wirelettuce |
Stephanomeria exigua ssp. coronaria |
1 |
| willowleaf lettuce |
Lactuca saligna |
1 |
| woodland groundsel |
Senecio sylvaticus |
1 |
| woodland sunflower |
Helianthus divaricatus |
1 |
| woody goldenrod |
Chrysoma pauciflosculosa |
1 |
| woolly ragwort |
Packera tomentosa |
3 |
| woolly sunbonnets |
Chaptalia tomentosa |
2 |
| yankeeweed |
Eupatorium compositifolium |
1 |
| yellowspine thistle |
Cirsium ochrocentrum |
1 |
