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INTRODUCTION
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HORSETAIL FAMILY, Equisetaceae
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FERN FAMILY, Polypodiaceae
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GRASS FAMILY, Gramineae
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JOINTED GOATGRASS, Aegilops cylindrica
Host.
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QUACKGRASS, Agropyron repens (L.) Beauv.
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BROOMSEDGE, Andropogon virginicus L.
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PRAIRIE THREEAWN, Aristida oligantha Michx.
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WILD OAT, Avena fatua L.
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JAPANESE BROME, Bromus japonicus Thunb.
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CHEAT, Bromus secalinus L.
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DOWNY BROME, Bromus tectorum L.
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LONGSPINE SANDBUR, Cenchrus longispinus
(Hack.)
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BERMUDAGRASS, Cynodon dactylon (L.) Pers.
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LARGE CRABGRASS, Digitaria sanguinalis
(L.) Scop.
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SMOOTH CRABGRASS, Digitaria ischaemum (Schreb.)
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BARNYARDGRASS, Echinochloa crusgalli (L.)
Beauv.
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STINKGRASS, Eragrostis cilianensis (All.)
Lutati.
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WOOLLY CUPGRASS, Eriochloo villosa (Thunb.)
Kunth.
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FOXTAIL BARLEY, Hordeum jubatum L.
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LITTLE BARLEY, Hordeum pusillum Nutt.
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DARNEL, Lolium temulentum L.
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WIRESTEM MUHLY, Muhlenbergia frondosa (Poir.)
Fern.
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NIMBLEWILL, Muhlenbergia schreberi J. F.
Gmel.
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WITCHGRASS, Panicum capillare L.
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FALL PANICUM, Panicum dichotomiflorum Michx.
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WILD PROSO MILLET, Ponicum miliaceum L.
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ANNUAL BLUEGRASS, Poo annua L.
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GIANT FOXTAIL, Setaria faberi Herrm.
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YELLOW FOXTAIL, Setaria lutescens (Weigel)
Hubb.
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BRISTLY FOXTAIL, Setaria verticillata (L.)
Beauv.
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GREEN FOXTAIL, Setaria Yiridis (L.) Beauv.
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SHATTERCANE, Sorghum bicolor (L.) Moench.
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JOHNSONGRASS, Sorghum holepense (L.) Pers.
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ANNUAL DROPSEED, Sporobolus neglectus Nash.
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PORCUPINEGRASS, Stipa spartea Trin.
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SEDGE FAMILY, Cyperaceae
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RUSH FAMILY, Juncaceae
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LILY FAMILY, Liliaceae
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HEMP FAMILY, Cannabaceae
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NETTLE FAMILY, Urticaceae
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BUCKWHEAT FAMILY, Polygonaceae
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PROSTRATE KNOTWEED, Polygonum aviculare L.
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ERECT KNOTWEED, Polygonum erectum L.
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SWAMP SMARTWEED, Polygonum coccineum Muhl.
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WILD BUCKWHEAT, Polygonum convolvulus L.
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PENNSYLVANIA SMARTWEED, Polygonum pensylvanicum
L.
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LADYSTHUMB, Polygonum persicaria L.
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RED SORREL, Rumex acetosella L.
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PALE DOCK, Rumex altissimus Wood.
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CURLY DOCK, Rumex crispus L.
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BROADLEAF DOCK, Rumex obtusifolius L.
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GOOSEFOOT FAMILY, Chenopodiaceae
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PIGWEED FAMILY, Amaranthaceae
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FOUR-O'CLOCK FAMILY, Nyctaginaceae
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POKEWEED FAMILY, Phytolaccaceae
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CARPETWEED FAMILY, Aizoaceae
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PURSLANE FAMILY, Portulacaceae
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PINK FAMILY, Caryophyllaceae
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CORN COCKLE, Agrostemma githago L.
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MOUSE-EAR CHICKWEED, Cerastium vulgatum
L.
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WHITE COCKLE, Lychnis alba Mill.
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BOUNCINGBET,Saponaria officinalis L.
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SLEEPY CATCHFLY, Silene antirrhina L.
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BLADDER CAMPION, Silene cucubalus Wibel.
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NIGHT-FLOWERING CATCHFLY, Silene noctiflora
L.
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CORN SPURRY, Spergula orvensis L.
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COMMON CHICKWEED, Stellaria media (L.)
Cyrillo.
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COW COCKLE, Vaccaria segetalis (Neck.)
Garcke.
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COWROOT FAMILY, Ranunculaceae
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POPPY FAMILY, Papaveraceae
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CAPER FAMILY, Capparaceae
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MUSTARD FAMILY, Cruciferae
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YELLOW ROCKET, Barbarea vulgaris R. Br.
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HOARY ALYSSUM, Berteroa incana (L.) DC.
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INDIAN MUSTARD, Brassica juncea (L.) Coss.
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BLACK MUSTARD, Brassica nigra (L.) Koch.
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WILD MUSTARD, Brassica kaber (DC.) Wheeler.
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LARGESEED FALSEFLAX, Camelina sativa (L.)
Crantz.
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SMALLSEED FALSEFLAX, Camelina microcarpa Andrz.
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SHEPHERD'S PURSE, Capsella bursa-pastoris
(L.) Medic.
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HOARY CRESS, Cardaria draba (L.) Desv.
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HARE'S EAR MUSTARD, Conringia orientalis
(L.) Dumort.
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TANSY MUSTARD, Descurainia pinnata (Wait.)
Britt.
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WORMSEED MUSTARD, Erysimum cheiranthoides
L.
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FIELD PEPPERWEED, Lepidium campestre
(L.) R. Br.
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GREENFLOWER PEPPERWEED, Lepidium densiflorum
Schrad.
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VIRGINIA PEPPERWEED, Lepidium virginicum
L.
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BALL MUSTARD, Neslia paniculata
(L.) Desv.
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WILD RADISH, Rophanus raphanistrum
L.
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AUSTRIAN FIELDCRESS, Rorippa austriaca
(Crantz) Bess.
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TUMBLE MUSTARD, Sisymbrium altissimum
L.
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HEDGE MUSTARD, Sisymbrium officinale
(L.) Scop.
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FIELD PENNYCRESS, Thlaspi arvense
L.
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ROSE FAMILY, Rosaceae
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LEGUME FAMILY, Leguminosae
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WOODSORREL FAMILY, Oxalidaceae
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GERANIMUM FAMILY, Geraniaceae
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CALTROP FAMILY, Zygophyllaceae
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SPURGE FAMILY, Euphorbiaceae
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CASHEW FAMILY, Anacardiaceae
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MALLOW FAMILY, Malvaceae
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ST. JOHNSWORT FAMILY, Guttiferae
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CACTUS FAMILY, Cactaceae
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EVENINGPRIMROSE FAMILY, Onagraceae
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PARSLEY FAMILY, Umbelliferae
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DOGBANE FAMILY, Apocynaceae
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MILKWEED FAMILY, Asclepiadaceae
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MORNINGGLORY FAMILY, Convolvulaceae
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WATERLEAF FAMILY, Hydrophyllaceae
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BORAGE FAMILY, Boraginaceae
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VERVAIN FAMILY, Verbenaceeae
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MINT FAMILY, Labiatae
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NIGHTSHADE FAMILY, Solanaceae
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FIGWORT FAMILY, Scrophulariaceae
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BIGNONIA FAMILY, Bignoniaceae
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MARTYNIA FAMILY, Martyniaceae
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PLANTAIN FAMILY, Plantaginaceae
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MADDER FAMILY, Rubiaceae
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TEASEL FAMILY, Dipsacaceae
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GOURD FAMILY, Cucurbitaceae
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BLUEBELL FAMILY, Companulaceae
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COMPOSITE FAMILY, Compositae
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COMMON YARROW, Achillea millefolium L.
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COMMON RAGWEED, Ambrosia artemisiifolia
L.
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LANCELEAF RAGWEED, Ambrosia bidentata
Michx.
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WESTERN RAGWEED, Ambrosia psilostachya
DC.
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GIANT RAGWEED, Ambrosia trifida L.
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SKELETONLEAF BURSAGE, Ambrosia tomentosa Nutt.
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WOOLLYLEAF BURSAGE, Ambrosia grayi (A.,
Nels.) Shinners.
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PLANTAINLEAF PUSSYTOES, Antennaria plantaginifolia
(L.) Hook.
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MAYWEED, Anthemis cotula L.
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COMMON BURDOCK, Arctium minus (Hill) Bernh.
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GREAT BURDOCK, Arctium lappa L.
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ABSINTH WORMWOOD, Artemisia absinthium
L.
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ANNUAL WORMWOOD, Artemisia annua L.
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HEATH ASTER, Aster ericoides L.
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WHITE HEATH ASTER, Aster pilosus Willd.
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SPANISHNEEDLES, Bidens bipinnata L.
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DEVIL'S BEGGARTICKS, Bidens frondosa L.
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SPOTTED KNAPWEED, Centaurea maculosa Lam.
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RUSSIAN KNAPWEED, Centaurea repens L.
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OXEYE DAISY, Chrysanthemum leucanthemum
L.
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CHICORY, Cichorium intybus L.
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PLUMELESS THISTLE, Carduus acanthoides
L.
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MUSK THISTLE, Carduus
nutans L.
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CANADA THISTLE, Cirsium arvense (L.) Scop.
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FLODMAN THISTLE, Cirsium flodmani (Rydb.)
Arthur.
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BULL THISTLE, Cirsium vulgare (Savi) Tenore.
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TALL THISTLE, Cirsium altissimum (L.)
Spreng.
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SCOTCH THISTLE, Onopordum acanthium L.
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HORSEWEED, Conyza canadensis (L.) Cronq.
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DWARF FLEABANE, Conyza ramosissima Cronq.
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PLAINS COREOPSIS, Coreopsis tinctoria
Nutt.
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SMOOTH HAWKSBEARD, Crepis capillaris (L.)
Wallr.
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ROUGH FLEABANE, Erigeron strigosus Muhl.
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WHITE SNAKEROOT, Eupatorium rugosum Houtt.
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LATE EUPATORIUM, Eupatoriurn serotinum
Michx.
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SMALLFLOWER GALINSOGA, Galinsoga parviflora
Cav.
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FRAGRANT CUDWEED, Gnaphalium obtusifolium
L.
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GUMWEED, Grindelia squarrosa (Pursh) Dunal.
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COMMON BROOMWEED, Gutierrezia dracunculoides
(DC.) Blake.
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BITTER SNEEZEWEED, Helenium amarum (Rafln.)
H. Rock.
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COMMON SNEEZEWEED, Helenium autumnale
L.
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COMMON SUNFLOWER, Helianthus annuus L.
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PRAIRIE SUNFLOWER, Helianthus petiolaris
Nutt.
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MAXIMILIAN SUNFLOWER, Helianthus maximiliani
Schrad.
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JERUSALEM ARTICHOKE, Helianthus
tuberosus L.
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ORANGE HAWKWEED, Hieracium aurantiacum
L.
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YELLOW HAWKWEED, Hieracium pratense Tausch.
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POVERTYWEED, Iva axillaris Pursh.
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MARSHELDER, Iva xanthifolia Nutt.
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BLUE LETTUCE, Lactuca pulchella (Pursh)
DC.
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PRICKLY LETTUCE, Lactuca serriola L.
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TALL LETTUCE, Lactuca canadensis L.
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SKELETONWEED, Lygodesmia juncea (Pursh)
D. Don.
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FALSE CHAMOMILE, Matricaria maritima L.
var. agrestis (Knaf) Wilmott.
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PINEAPPLEWEED, Matricaria matricarioides
(Less.) Porter.
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BLACKEYED SUSAN, Rudbeckia hirta L.
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CUTLEAF CONEFLOWER, Rudbeckia laciniata
L.
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GOLDEN RAGWORT, Senecio aureus L.
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CUPPLANT, Silphium perfoliatum L.
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GRAY GOLDENROD, Solidago nemoralis Ait.
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RIGID GOLDENROD, Solidogo rigida L.
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PERENNIAL SOWTHISTLE, Sonchus oleraceus
L.
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ANNUAL SOWTHISTLE, Sonchus oleraceus L
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SPINY SOWTHISTLE, Sonchus asper (L.) Hill.
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TANSY, Tanacetum vulgare L.
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COMMON DANDELION, Taraxacum officinale
Weber.
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WESTERN SALSIFY, Tragopogon dubius Scop.
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TALL IRONWEED, Vernonia altissima Nutt.
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WESTERN IRONWEED, Vernonia baldwini Torr.
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COMMON COCKLEBUR, Xanthium strumarium L.