| boneset |
Eupatorium perfoliatum |
1 |
| British yellowhead |
Inula britannica |
1 |
| brown knapweed |
Centaurea jacea |
2 |
| bull cottonthistle |
Onopordum tauricum |
1 |
| bull thistle |
Cirsium vulgare |
6 |
| Canada thistle |
Cirsium arvense |
4 |
| chicory |
Cichorium intybus |
1 |
| common burdock |
Arctium minus |
1 |
| common cocklebur |
Xanthium strumarium |
1 |
| common sunflower |
Helianthus annuus |
2 |
| cup rosinweed |
Silphium perfoliatum |
6 |
| false chamomile |
Tripleurospermum perforatum |
4 |
| giant ragweed |
Ambrosia trifida |
1 |
| goatsbeard |
Tragopogon spp. |
1 |
| goldenrod |
Solidago spp. |
1 |
| hairy white oldfield aster |
Symphyotrichum pilosum var. pilosum |
1 |
| hawkweeds |
Hieracium spp. |
1 |
| Italian plumeless thistle |
Carduus pycnocephalus |
1 |
| Jerusalem artichoke |
Helianthus tuberosus |
3 |
| joe pye weed |
Eupatoriadelphus spp. |
2 |
| meadow hawkweed |
Hieracium caespitosum |
2 |
| mugwort |
Artemisia vulgaris |
3 |
| musk thistle |
Carduus nutans |
4 |
| perennial sowthistle |
Sonchus arvensis |
2 |
| prickly lettuce |
Lactuca serriola |
1 |
| spiny cocklebur |
Xanthium spinosum |
1 |
| spiny sowthistle |
Sonchus asper |
1 |
| spotted joe pye weed |
Eupatoriadelphus maculatus |
1 |
| spotted knapweed |
Centaurea stoebe |
1 |
| tall ironweed |
Vernonia gigantea |
4 |
| tall lettuce |
Lactuca canadensis |
1 |
| wall lettuce |
Mycelis muralis |
4 |
| western salsify |
Tragopogon dubius |
1 |
| yellow starthistle |
Centaurea solstitialis |
2 |
