| Key Species - Full text | Associated Species – Mentioned in text |
| 1. Abutilon theophrasti (velvetleaf) |
Hibiscus trionum (Venice mallow) |
| 2. Acalypha rhomboidea (rhombic copperleaf,
three-seeded mercury) |
A. virginica (Virginia copperleaf) |
| 3. Achillea millefolium (common yarrow) |
|
| 4. Amaranthus retroflexus (redroot
pigweed) |
Amaranthus powelli (Powell amaranth) and Amaranthus hybridus (smooth pigweed) |
| 5. Ambrosia artemisiifolia (common
ragweed) |
|
| 6. Anthemis cotula(mayweed chamomile,
stinking mayweed) |
Matricaria perforata (scentless chamomile) |
| 7. Arctium minus(common burdock) |
Arctium lappa (great burdock) |
| 8.Artemisia vulgaris(mugwort) |
|
| 9. Asclepias syriaca (common milkweed) |
Apocynum cannabinum (hemp dogbane) |
| 10. Avena fatua (wild oats) |
Avena sativa (cultivated oats) |
| 11. Barbarea vulgaris (yellow rocket) | |
| 12. Brassica kaber (wild mustard); Synonym: Sinapis arvensis | Erucastrum gallicum (dog mustard), Sisymbrium altissimum (tumble mustard),
Rhaphanus raphanistrum (wild radish), Rorippa sylvestris (yellow fieldcress) |
| 13. Calystegia sepium (hedge bindweed) |
Syn. = Convolvulus sepium |
| 14. Capsella bursa-pastoris Medicus (shepherd’s-purse) | |
| 15. Carduus acanthoides (plumeless thistle) and C. nutans (musk thistle,
nodding thistle) | Onopordium acanthium (Scotch thistle) |
| 16. Centaurea maculosa (spotted knapweed) |
Syn Centaurea bieberstienii, Centaurea diffusa (diffuse knapweed), Centaurea
solstitialis (yellow star thistle), Acroptilon repens (Russian knapweed)
|
| 17. Cerastium vulgatum (mouseear chickweed) | Veronica serpyllifolia (thyme-leaved speedwell, veronique a feuilles de
serpolet)
|
| 18. Chenopodium album (common lambsquarters) |
Chenopodium gigantospermum (mapleleaf goosefoot),
Chenopodium glaucum (oakleaf goosefoot), Atriplex patula (spreading orach),
Atriplex patula var. hastata (Syn. Atriplex prostrata, halberdleaf orach).
|
| 19. Chrysanthemum leucanthemum (oxeye daisy) | |
20. Cichorium intybus (chicory)
| |
21. Cirsium arvense (Canada thistle)
| |
| 22. Cirsium vulgare (bull thistle) | Dipsacus fullonum (common teasel) |
23. Convolvulus arvensis (field bindweed)
| |
24. Conyza canadensis (horseweed, Canada fleabane)
| Syn = Erigeron Canadensis |
25. Cyperus esculentus (yellow nutsedge)
| |
26. Daucus carota (wild carrot)
|
Cicuta maculata (spotted waterhemlock), Conium maculatum (poison hemlock)
|
27. Digitaria sanguinalis (large crabgrass)
| Digitaria ischaemum (smooth crabgrass) |
28. Echinochloa crus-galli (barnyardgrass)
| |
29. Echium vulgare (blueweed)
| |
30. Elytrigia repens (quackgrass)
|
Syn. = Agropyron repens. Phragmites australis (common
reed)
|
31. Equisetum arvense (field horsetail)
|
Equisetum pratense (meadow horsetail) |
| 32. Erigeron annuus (annual fleabane) | Erigeron strigosus (rough fleabane), Erigeron philadelphicus (Philadelphia fleabane), Aster novae-angliae (New England aster), Bellis perennis (English
Daisy) |
33. Erysimum cheiranthoides (wallflower mustard, wormseed mustard)
| Erucastrum gallicum (dog mustard) |
34. Euphorbia esula (leafy spurge)
|
Euphorbia cyparissias (cypress spurge) |
35. Euphorbia helioscopia (sun spurge)
| |
36. Galeopsis tetrahit (hemp-nettle)
| |
37. Galinsoga ciliata (hairy galinsoga)
| |
| 38. Galium verum (yellow bedstraw) | Galium aparine (catchweed bedstraw, cleavers) and Galium mollugo (smooth bedstraw) |
| 39. Glechoma hederacea (ground ivy) | Lamium amplexicaule (henbit), Nepeta cataria (catnip) |
| 40. Gnaphalium uliginosum (low cudweed) | |
| 41. Helianthus tuberosus (Jerusalem artichoke) | Rudbeckia serotina (blackeyed-susan) |
| 42. Hieracium aurantiacum (orange hawkweed) | Hieracium pratense (yellow hawkweed) |
| 43. Hordeum jubatum (foxtail barley) | |
| 44. Hypericum perforatum (common St. Johnswort) | |
| 45. Kochia scoparia (kochia, summer-cypress) | Salsola tragus (Russian thistle) |
| 46. Lactuca serriola (prickly lettuce) | |
| 47. Leontodon autumnalis (fall hawkbit) | |
48. Lepidium densiflorum (greenflower pepperweed, common pepper-grass)
| Lepidium campestre (field pepperweed) and Lepidium virginicum (Virginia
pepperweed)
|
| 49. Linaria vulgaris (yellow toadflax) |
Linaria genistifolia ssp. dalmatica (dalmation toadflax)
|
50. Lythrum salicaria (purple loosestrife)
| Epilobium angustifolium (fireweed), Verbena stricta (hoary vervain) |
| 51. Malva neglecta (Malva rotundifolia) (common mallow) |
|
52. Matricaria matricarioides (pineapple-weed)
| |
53. Medicago lupulina (black medic)
| Trifolium agrarium (hop-clover)
|
| 54. Oenothera biennis (yellow evening primrose) | Oenothera laciniata (cutleaf evening primrose)
|
55. Panicum capillare (witchgrass)
| Panicum dichotomiflorum (fall panicum)
|
56. Pastinaca sativa (wild parsnip)
| Panicum miliaceum (wild-proso millet)
|
57. Physalis heterophylla (clammy groundcherry)
| Physalis subglabrata (smooth groundcherry)
|
| 58. Plantago lanceolata (buckhorn plantain, narrow-leaved plantain) | Plantago rugelii (blackseed plantain) |
59. Plantago major (broadleaf plantain)
| |
60. Polygonum aviculare (prostrate knotweed)
| Polygonum achoreum (striate knotweed)
|
61. Polygonum convolvulus (wild buckwheat)
| Polygonum cilinode (blackfringe knotweed)
|
62. Polygonum persicaria (ladysthumb)
| Polygonum lapathifolium (pale smartweed), Polygonum pensylvanicum (Pennsylvania
smartweed), Polygonum scabrum (green smartweed), and Polygonum cuspidatum
(Japanese knotweed)
|
| 63. Portulaca oleracea (common purslane) | |
64. Potentilla recta (sulphur cinquefoil)
| Potentilla norvegica (rough cinquefoil), Fragaria virginiana (strawberry),
Potentilla argentea (silvery cinquefoil), Potentilla anserina (silverweed
cinquefoil), Cannabis sativa (hemp) |
65. Prunella vulgaris (healall)
| Lamium amplexicaule (henbit)
|
| 66. Ranunculus acris (tall buttercup) | Ranunculus bulbosus (bulbous buttercup) |
67. Rumex acetosella (red sorrel, sheep sorrel)
| |
68. Rumex crispus (curled dock)
| |
69. Saponaria officinalis (bouncingbet)
| Saponaria vaccaria (cow cockle) |
| 70. Senecio jacobaea (tansy ragwort) | |
71. Senecio vulgaris (common groundsel)
| |
72. Setaria glauca (yellow foxtail) and Setaria viridis (green foxtail)
| Setaria faberi (giant foxtail) |
| 73. Silene alba (white campion, white cockle) | Syn.= Silene latifolia; Silene noctiflora (nightflowering catchfly) |
74. Silene vulgaris (bladder campion)
| Syn. = Silene cucubalis |
75. Solanum dulcamara (bittersweet nightshade, climbing nightshade)
| |
76. Solanum ptycanthum (eastern black nightshade) and Solanum nigrum (black
nightshade)
| Solanum carolinense (horseweed) |
77. Solidago canadensis (Canada goldenrod)
| |
78. Sonchus arvensis (perennial sowthistle)
| |
79. Sonchus asper (spiny annual sowthistle) and Sonchus oleraceus (annual
sowthistle)
| |
80. Spergula arvensis (corn spurry)
| |
81. Stellaria media (common chickweed)
| Stellaria graminea (little starwort, grass-leaved stitchwort) Veronica
serpyllifolia (thyme-leaved speedwell) |
82. Tanacetum vulgare (tansy)
| |
| 83. Taraxacum officinale (dandelion) | |
84. Thlaspi arvense (field pennycress, stinkweed)
| |
85. Toxicodendron radicans (poison-ivy)
| Syn. = Rhus radicans; Aegopodium podagraria (goutweed)
|
86. Tragopogon pratensis (meadow salsify, meadow goat’s-beard)
| Tragopogon dubius (western salsify, goat’s-beard)
|
| 87. Tussilago farfara (coltsfoot) | |
88. Urtica dioica (stinging nettle)
| |
89. Valeriana officinalis (valerian)
| |
90. Verbascum thapsus (common mullein)
| |
91. Vicia cracca (bird vetch, tufted vetch)
| |
| 92. Xanthium strumarium (common cocklebur) | |
