| absinth wormwood |
Artemisia absinthium |
1 |
| African mile-a-minute |
Mikania cordata |
1 |
| alpine knapweed |
Centaurea nigrescens |
2 |
| annual bursage |
Ambrosia acanthicarpa |
1 |
| annual fleabane |
Erigeron annuus |
1 |
| annual sowthistle |
Sonchus oleraceus |
11 |
| annual wormwood |
Artemisia annua |
1 |
| aster |
Aster spp. |
1 |
| Aster |
|
2 |
| Bay Biscayne creeping-oxeye |
Sphagneticola trilobata |
1 |
| biennial wormwood |
Artemisia biennis |
2 |
| black knapweed |
Centaurea nigra |
2 |
| blessed milkthistle |
Silybum marianum |
5 |
| blue lettuce |
Lactuca tatarica var. pulchella |
1 |
| boneset |
Eupatorium perfoliatum |
6 |
| bristly hawksbeard |
Crepis setosa |
2 |
| British yellowhead |
Inula britannica |
14 |
| brown knapweed |
Centaurea jacea |
2 |
| bull cottonthistle |
Onopordum tauricum |
8 |
| bull thistle |
Cirsium vulgare |
53 |
| bur beggarticks |
Bidens tripartita |
1 |
| Canada goldenrod |
Solidago canadensis |
4 |
| Canada thistle |
Cirsium arvense |
42 |
| cape ivy |
Delairea odorata |
4 |
| capeweed |
Arctotheca calendula |
8 |
| chicory |
Cichorium intybus |
14 |
| coat buttons |
Tridax procumbens |
1 |
| coltsfoot |
Tussilago farfara |
15 |
| common burdock |
Arctium minus |
14 |
| common cocklebur |
Xanthium strumarium |
8 |
| common crupina |
Crupina vulgaris |
3 |
| common groundsel |
Senecio vulgaris |
4 |
| common ragweed |
Ambrosia artemisiifolia |
6 |
| common tansy |
Tanacetum vulgare |
9 |
| common tarweed |
Centromadia pungens ssp. pungens |
4 |
| common yarrow |
Achillea millefolium |
18 |
| corn chamomile |
Anthemis arvensis |
1 |
| cornflower |
Centaurea cyanus |
4 |
| Coulter's horseweed |
Laennecia coulteri |
2 |
| creeping croftonweed |
Ageratina riparia |
1 |
| croftonweed |
Ageratina adenophora |
7 |
| cup rosinweed |
Silphium perfoliatum |
6 |
| dandelion |
Taraxacum officinale |
8 |
| dandelion |
Taraxacum spp. |
1 |
| devils beggarticks |
Bidens frondosa |
1 |
| diffuse knapweed |
Centaurea diffusa |
4 |
| early goldenrod |
Solidago juncea |
3 |
| eclipta |
Eclipta prostrata |
1 |
| fernleaf yarrow |
Achillea filipendulina |
1 |
| field thistle |
Cirsium discolor |
4 |
| flat-top goldentop |
Euthamia graminifolia var. graminifolia |
4 |
| fleabanes |
Erigeron spp. |
1 |
| Florida wild lettuce |
Lactuca floridana |
1 |
| giant ironweed |
Vernonia gigantea gigantea |
7 |
| giant ragweed |
Ambrosia trifida |
9 |
| goatsbeard |
Tragopogon spp. |
4 |
| goldenrod |
Solidago spp. |
7 |
| great burdock |
Arctium lappa |
2 |
| great globethistle |
Echinops sphaerocephalus |
1 |
| hairy beggarticks |
Bidens pilosa |
1 |
| hairy cat's ear |
Hypochaeris radicata |
12 |
| hairy fleabane |
Conyza bonariensis |
3 |
| hairy galinsoga |
Galinsoga ciliata |
2 |
| hairy white oldfield aster |
Symphyotrichum pilosum var. pilosum |
6 |
| hawkweeds |
Hieracium spp. |
2 |
| horse thistle |
Onopordum acaulon |
2 |
| horseweed |
Conyza canadensis |
9 |
| horseweeds |
Conyza spp. |
1 |
| Illyrian cottonthistle |
Onopordum illyricum |
1 |
| Italian plumeless thistle |
Carduus pycnocephalus |
7 |
| Jerusalem artichoke |
Helianthus tuberosus |
6 |
| joe pye weed |
Eupatoriadelphus spp. |
11 |
| knapweeds |
Centaurea spp. |
1 |
| Madagascar ragwort |
Senecio madagascariensis |
4 |
| meadow hawkweed |
Hieracium caespitosum |
4 |
| meadow knapweed |
Centaurea moncktonii |
7 |
| mouseear hawkweed |
Hieracium pilosella |
2 |
| mugwort |
Artemisia vulgaris |
9 |
| musk thistle |
Carduus nutans |
45 |
| narrowleaf hawksbeard |
Crepis tectorum |
3 |
| North African knapweed |
Centaurea diluta |
1 |
| orange hawkweed |
Hieracium aurantiacum |
12 |
| oxeye daisy |
Leucanthemum vulgare |
14 |
| perennial sowthistle |
Sonchus arvensis |
16 |
| pineapple-weed |
Matricaria discoidea |
4 |
| prickly lettuce |
Lactuca serriola |
30 |
| purple starthistle |
Centaurea calcitrapa |
1 |
| rush skeletonweed |
Chondrilla juncea |
6 |
| Russian knapweed |
Rhaponticum repens |
10 |
| safflower |
Carthamus tinctorius |
1 |
| Scotch thistle |
Onopordum acanthium |
19 |
| seepwillow |
Baccharis salicifolia |
1 |
| Senegal tea plant |
Gymnocoronis spilanthoides |
3 |
| skeletonleaf bursage |
Ambrosia tomentosa |
1 |
| slenderflower thistle |
Carduus tenuiflorus |
2 |
| South African ragwort |
Senecio inaequidens |
2 |
| spiny cocklebur |
Xanthium spinosum |
2 |
| spiny plumeless thistle |
Carduus acanthoides |
6 |
| spiny sowthistle |
Sonchus asper |
7 |
| spotted joe pye weed |
Eupatoriadelphus maculatus |
3 |
| spotted knapweed |
Centaurea stoebe |
12 |
| spotted knapweed |
Centaurea stoebe ssp. micranthos |
42 |
| squarrose knapweed |
Centaurea virgata |
6 |
| stinking chamomile |
Anthemis cotula |
4 |
| sulphur knapweed |
Centaurea sulphurea |
2 |
| tall fleabane |
Conyza floribunda |
2 |
| tall ironweed |
Vernonia gigantea |
2 |
| tall lettuce |
Lactuca canadensis |
1 |
| tansy ragwort |
Senecio jacobaea |
21 |
| thistle |
Cirsium spp. |
3 |
| wall lettuce |
Mycelis muralis |
16 |
| wavyleaf thistle |
Cirsium undulatum |
1 |
| western ragweed |
Ambrosia psilostachya |
1 |
| western salsify |
Tragopogon dubius |
7 |
| white heath aster |
Symphyotrichum ericoides var. ericoides |
5 |
| white snakeroot |
Ageratina altissima |
2 |
| white snakeroot |
Ageratina altissima var. altissima |
3 |
| willowleaf lettuce |
Lactuca saligna |
2 |
| woolly distaff thistle |
Carthamus lanatus |
2 |
| yellow chamomile |
Anthemis tinctoria |
1 |
| yellow starthistle |
Centaurea solstitialis |
53 |
| yellow thistle |
Cirsium horridulum |
1 |
| yellowspine thistle |
Cirsium ochrocentrum |
1 |
