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The common names are alphabetized two ways.
(1) Look up "Black Jack Oak" by going directly to "B" and finding "Black Jack Oak".
(2) Look up "oaks" by going to "O" and finding all the oaks including "Oak, Black Jack" in the lower "Index-style" section.

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Ruellia humilis (Wild Petunia)

Iresine rhizomatosa (Root-stock Bloodleaf)

Cicuta maculata (Spotted Water-Hemlock)

Erigenia bulbosa (Salt and Pepper Plant)

Eryngium leavenworthii (Leavenworth's Eryngo)

Eryngium yuccifolium (Rattlesnake Master)

Lomatium foeniculaceum (Desert Parsley)

Osmorhiza longistylis (Long-style Sweet-cicely)

Polytaenia nuttallii (Nuttall's Prairie Parsley)

Ptilimnium nuttallii (Laceflower)

Thaspium barbinode (Meadow Parsnip)

Torilis arvensis (Field Hedge Parsley)

Zizia aurea (Golden Alexander)

Amsonia tabernaemontana (Willow Bluestar)

Apocynum cannabinum (Hemp Dogbane)

Arisaema dracontium (Dragonroot)

Arisaema triphyllum  (Jack-in-the-Pulpit)

Aristolochia tomentosa (Dutchman's Pipe)

Asarum canadense  (Wild Ginger)

Asclepias hirtella (Prairie Milkweed)

Asclepias incarnata (Swamp Milkweed)

Asclepias meadii (Mead's Milkweed)

Asclepias purpurascens (Purple Milkweed)

Asclepias syriaca (Common Milkweed)

Asclepias tuberosa (Butterfly Weed)

Asclepias viridiflora (Green Milkweed)

Asclepias viridis (Spider Millkweed)

Cynanchum laeve (Smooth Swallow-wort)

Matelea gonocarpos (Southeastern Milkvine)

Achillea millefolium (Western Yarrow)

Ageratina altissima (White Snakeroot)

Ambrosia trifida (Giant Ragweed)

Antennaria parlinii (Pussytoes)

Arnoglossum plantagineum (Indian Plaintain)

Bidens aristosa (Bearded Beggarticks)

Boltonia asteroides (White Boltonia)

Carduus nutans subs leiophyllus (Musk-thistle)

Cichorium intybus (Chicory)

Cirsium altissimum (Tall Thistle)

Conoclinium coelestinum (Blue Mistflower)

Coreopsis grandiflora (Big-flowered Coreopsis)

Coreopsis palmata (Stiff Tickseed)

Coreopsis tinctoria (Golden Tickseed)

Dracopis amplexicaulis (Clasping Coneflower)

Echinacea pallida (Pale Purple Coneflower)

Echinacea purpurea (Eastern Purple Coneflower)

Eclipta prostrata (False Daisy)

Elephantopus carolinianus (Carolina Elephantsfoot)

Erigeron philadelphicus (Philadelphia Fleabane)

Erigeron strigosus (Daisy Fleabane)

Eupatorium altissimum (Tall Thoroughwort)

Eupatorium perfoliatum (Common Boneset)

Grindelia lanceolata (Narrowleaf Gumweed)

Helenium amarum (Yellowdicks)

Helenium flexuosum (Purplehead Sneezeweed)

Helianthus annuus (Common Sunflower)

Helianthus grosseserratus (Sawtooth Sunflower)

Helianthus hirsutus (Hairy Sunflower)

Helianthus maximiliani (Maximilian SunfloweR)

Helianthus mollis (Ashy Sunflower)

Helianthus salicifolius (Willowleaf Sunflower)

Heliopsis helianthoides (Smooth Oxeye)

Krigia dandelion (Dwarf Dandelion)

Kuhnia eupatorioides (False Boneset)

Leucanthemum vulgare (Ox-eye Daisy)

Liatris aspera (Tall Blazing Star)

Liatris punctata (Dotted Blazing Star)

Liatris pycnostachya (Kansas Gay Feather)

Marshallia caespitosa (Barbara's Button)

Matricaria discoidea (Disc Mayweed)

Packera glabella (Floodplain Ragwort)

Parthenium integrifolium (Wild Quinine)

Pluchea camphorata (Camphor Marsh Fleabane)

Polymnia canadensis (White Flowered Leaf-cup)

Prenanthes aspera (Rough White Lettuce)

Pyrrhopappus carolinianus (Carolina Desert Chicory)

Ratibida pinnata (Gray-headed Coneflower)

Rudbeckia hirta (Blackeyed Susan)

Rudbeckia triloba (Browneyed Susan)

Silphium integrifolium (Whole-leaf Rosinweed)

Silphium laciniatum (Compass Plant)

Silphium perfoliatum (Cup Plant)

Solidago canadensis (Canada Goldenrod)

Solidago nemoralis (Gray Goldenrod)

Solidago rigida (Stiff Goldenrod)

Solidago speciosa (Showy Goldenrod)

Symphyotrichum patens (Late Purple Aster)

Symphyotrichum pilosum (Hairy White Oldfield Aster)

Symphyotrichum praealtus (Willowleaf Aster)

Tragopogon dubius (Goat's Beard)

Verbesina alternifolia (Wingstem)

Verbesina virginica (White Crownbeard)

Vernonia arkansana (Arkansas Ironweed)

Vernonia baldwinii (Baldwin's Ironweed)

Xanthium strumarium (Cocklebur)

Impatiens capensis (Spotted Touch-me-not)

Heliotropium tenellum (Pasture Heliotrope)

Lithospermum canescens (Hoary Gromwell)

Lithospermum incisum (Indian Heliotrope)

Hesperis matronalis (Dame's Rocket)

Lepidium virginicum (Virginia Pepper-grass)

Lesquerella gracilis subs nuttallii (Spreading Bladderpod)

Rorippa nasturtium-aquaticum (Watercress)

Selenia aurea (Golden Selenia)

Opuntia humifusa (Devil's Tongue)

Opuntia macrorhiza (Twistspine Pricklypear)

Campanula americana (American Bellflower)

Lobelia cardinalis (Cardinal Flower)

Lobelia siphilitica (Blue Cardinal Flower)

Lobelia spicata (Spiked Lobelia)

Triodanis perfoliata (Clasping Venus'-looking Glass)

Triosteum angustifolium (Narrow-leaf Horse Gentian)

Triosteum perfoliatum (Clasping Leaf Horse Gentian)

Dianthus armeria (Deptford Pink)

Silene antirrhina (Sleep Catchfly)

Silene regia (Royal Catchfly)

Silene stellata (Starry Catchfly)

Silene virginica (Fire Pink)

Stellaria media (Common Chickweed)

Hypericum perforatum (Common St. John's Wort)

Hypericum punctatum (Spotted St. John's Wort)

Commelina communis (Day Flower)

Tradescantia ohiensis (Ohio Spiderwort)

Tradescantia tharpii (Tharp's Spiderwort)

Calystegia sepium var angulata (Common Hedge Bindweed)

Convolvulus arvensis (Field Bindweed)

Ipomoea pandurata (Big-root Morning Glory)

Sedum pulchellum (Showy Stonecrop)

Sicyos angulatus (Bur-cucumber)

Cuscuta gronovii (Field Dodder)

Dipsacus fullonum (Fuller's Teasel)

Dipsacus laciniatus (Cutleaf Teasel)

Acalypha virginica (Virginia Copperleaf)

Croton capitatus (Wolly Croton)

Euphorbia corollata (Prairie Spurge)

Euphorbia cyathophora (Painted Spurge)

Euphorbia marginata (Snow-on-the-mountain)

Amorpha canescens (Lead Plant)

Amphicarpaea bracteata (American Hog-peanut)

Apios americana (American Potato Bean)

Astragalus canadensis (Canadian Milk Vetch)

Baptisia alba var macrophylla (White Wild Indigo)

Baptisia bracteata var leucophaea (Plains Wild Indigo)

Chamaecrista fasciculata (Partridge Pea)

Dalea candida (White Prairie Clover)

Dalea purpurea (Purple Prairie Clover)

Desmanthus illinoensis (Illinois Bundle-flower)

Desmodium glutinosum (Large-flowered Tick Clover)

Desmodium sessilifolium (Sessile-leaf Tick Clover)

Lathyrus latifolius  (Everlasting Pea)

Lespedeza capitata (Round-head Bush Clover)

Lespedeza violacea (Violet Bush Clover)

Lotus corniculatus (Birdfoot Deervetch)

Melilotus officinalis (White Sweetclover)

Melilotus officinalis (Yellow Sweetclover)

Orbexilum pedunculatum (Sampson's Snakeroot)

Phaseolus polystachios (Wild Bean)

Psoralidium tenuiflorum (Slimflower Scurfpea)

Securigera varia (Crown Vetch)

Senna marilandica (Maryland Senna)

Strophostyles helvula (Trailing Wild Bean)

Stylosanthes biflora (Pencil Flower)

Tephrosia virginiana (Virginia Hoary-pea)

Trifolium campestre (Low Hop Clover)

Trifolium pratense (Red Clover)

Trifolium repens (White Clover)

Corydalis crystallina (Mealy Fumewort)

Corydalis flavula (Pale Fumewort)

Corydalis micrantha (Slender Fumewort)

Dicentra cucullaria (Dutchman's Breeches)

Gentiana puberulenta (Downy Gentian)

Sabatia campestris (Marsh Pink)

Geranium maculatum (Wild Geranium)

Ellisia nyctelea (Water-pod)

Hydrophyllum virginianum (Virginia Waterleaf)

Phacelia hirsuta (Hairy Scorpionweed)

Hypoxi hirsuta (Common Goldstar)

Belamcanda chinensis (Blackberry Lily)

Nemastylis geminiflora (Prairie Pleatleaf)

Sisyrinchium campestre (Blue-eyed Grass)

Agastache nepetoides (Catnip Giant Hyssop)

Cunila origanoides (Common Dittany)

Lamium amplexicaule (Hen-bit)

Lamium purpureum (Purple Dead Nettle)

Lycopus americanus (American Water Horehound)

Mentha spicata (Spearmint)

Monarda citriodora (Lemon Bee-balm)

Monarda fistulosa (Wild Bergamot Bee-balm)

Nepeta cataria (Common Catnip)

Perilla frutescens (Beefsteak Plant)

Physostegia virginiana (Obedient Plant)

Prunella vulgaris (Self-heal)

Pycnanthemum albescens (White Mountain Mint)

Pycnanthemum tenuifolium (Narrowleaf Mountain Mint)

Salvia azurea (Blue Sage)

Scutellaria incana (Side-flower Skullcap)

Scutellaria parvula var australis (Small Skullcap)

Teucrium canadense (American Germander)

Allium canadense (Wild Onion)

Allium canadense var lavendulare (Canadian Onion)

Camassia scilloides (Wild Hyacinth)

Erythronium albidum (White Fawn Lily)

Erythronium rostratum (Yellow Trout Lily)

Hemerocallis fulva (Orange Day-lily)

Lilium michiganense (Michigan Lily)

Maianthemum racemosum (Spikenard)

Melanthium virginicum (Bunchflower)

Nothoscordum bivalve (False Wild Garlic)

Ornithogalum umbellatum (Star of Bethlehem)

Uvularia grandiflora (Large-flowered Bellwort)

Zigadenus nuttallii (Nuttall's Death Camas)

Linum sulcatum (Grooved Flax)

Mentzelia oligosperma (Chickenthief)

Ammannia coccinea (Toothcup)

Cuphea viscosissima (Blue Waxweed)

Lysimachia hybrida  (Lowland Yellow Loosestrife)

Lythrum alatum (Winged Lythrum)

Callirhoe alcaeoides (Pale Poppy Mallow)

Callirhoe digitata (Purple Poppy Mallow)

Hibiscus moscheutos (Crimsoneyed Rose Mallow)

Hibiscus trionum (Flower-of-an-hour)

Sida spinosa (Prickly Sida)

Rhexia mariana var interior (Maryland Meadow Beauty)

Monotropa uniflora (One-flowered Indian Pipe)

Nelumbo lutea (American Water Lotus)

Nuphar luteum (Spatter Dock)

Nymphaea odorata (Pink Water Lily)

Nymphaea odorata (White Water Lily)

Calylophus serrulatus (Toothed Evening Primrose)

Gaura biennis (Butterfly Flower - reddish)

Gaura biennis (Butterfly Flower - white)

Ludwigia alternifolia (Brushy Seedbox)

Ludwigia peploides subs glabrescens (Floating Seedbox)

Oenothera biennis (Sun Drops)

Oenothera laciniata (Cut-leaf Evening Primrose)

Oenothera linifolia (Thread-leaf Evening Primrose)

Oenothera macrocarpa (Missouri Evening Primrose)

Oenothera speciosa (Showy Evening Primrose - pink)

Oenothera speciosa (Showy Evening Primrose - white)

Oenothera triloba (Stemless Primrose)

Stenosiphon linifolius (Stenosiphon)

Cypripedium parviflorum (Yellow Lady's Slipper)

Habenaria lacera (Ragged Orchid)

Spiranthes cernua (Southern Slender Ladies'-tresses)

Spiranthes vernalis (Spring Ladies'-tresses)

Orobanche uniflora (One-flowered Broomrape)

Oxalis dillenii (Gray-green Wood Sorrel)

Oxalis stricta (Yellow Wood Sorrel)

Oxalis violacea (Violet Wood Sorrel)

Sanguinaria canadensis (Bloodroot)

Passiflora incarnata (May-pop Passionvine)

Passiflora lutea (Yellow Passion Flower)

Proboscidea louisianica (Devil's Claw)

Phytolacca americana (American Pokeweed)

Plantago aristata (Bottlebrush Plantain)

Plantago lanceolata (Narrowleaf Plantain)

Plantago pusilla (Tiny Plantain)

Plantago virginica (Virginia Plantain)

Phlox divaricata (Blue Phlox)

Phlox paniculata (Summer Phlox)

Phlox pilosa (Prairie Phlox)

Polemonium reptans (Jacob's Ladder)

Polygala incarnata (Slender Milkwort)

Polygala sanguinea (Purple Milkwort)

Polygonum amphibium (Water Smartweed)

Polygonum aviculare (Prostrate Knotweed)

Polygonum hydropiperoides (Swamp Smartweed)

Polygonum pensylvanicum (Pennsylvania Smartweed)

Polygonum scandens (Climbing False Buckwheat)

Polygonum virginianum (Jumpseed)

Heteranthera limosa (Blue Mud Plantain)

Pontederia cordata (Heart-leaf Pickerel-weed)

Claytonia virginica (Spring Beauty)

Talinum calycinum (Rock Pink)

Potamogeton nodosus (Long-leaf Pondweed)

Anagallis arvensis (Scarlet Pimpernel)

Androsace occidentalis (Western Rock Jasmine)

Dodecatheon meadia (Purple Shooting Star)

Dodecatheon meadia (White Shooting Star)

Lysimachia ciliata (Fringed Loosestrife)

Anemone caroliniana (Carolina Anemone)

Anemone caroliniana (Purple Wind Flower)

Anemone virginica (Tall Anemone)

Aquilegia canadensis (American Columbine)

Clematis pitcheri (Pitcher's Clematis)

Delphinium carolinianum ssp carolinianum (Prairie Larkspur)

Delphinium carolinianum ssp virescens (Prairie Larkspur)

Delphinium carolinianum var virescens (Prairie Larkspur)

Delphinium tricorne (Dwarf Larkspur)

Enemion biternatum (False Rue Anemone)

Myosurus minimus (Mousetail)

Ranunculus abortivus (Littleleaf Buttercup)

Ranunculus fascicularis (Early Buttercup)

Ranunculus hispidus (Bristly Buttercup)

Ranunculus sceleratus (Cursed Buttercup)

Thalictrichum thalictroides (Rue Anemone)

Thalictrum dasycarpum (Purple Meadow Rue)

Geum canadense  (White Avens)

Porteranthus stipulatus (Indian Physic)

Rosa carolina (Carolina Rose)

Rosa setigera (Prairie Rose)

Galium triflorum (Sweet-scent Bedstraw)

Houstonia longifolia (Narrow-leaf Bluet)

Houstonia pusilla (Tiny Bluet)

Saururus cernuus (Lizard's Tail)

Heuchera richardsonii (Richard's Alum Root)

Agalinis auriculata (Earleaf False Foxglove)

Agalinis fasciculata (Fascicled Agalinis)

Castilleja coccinea (Indian Paintbrush)

Collinsia violacea (Violet Blue-eyed Mary)

Linaria vulgaris (Butter and Eggs)

Mimulus alatus (Sharp-wing Monkey Flower)

Nuttallanthus canadensis (Canada Toadflax)

Nuttallanthus texanus (Texas Toadflax)

Pedicularis canadensis (Lousewort)

Penstemon cobaea (Cobaea Beardtongue)

Penstemon digitalis (Smooth Beardtongue)

Penstemon tubiflorus (White Wand Beardtongue)

Verbascum blattaria (Moth Mullein)

Verbascum blattaria (Moth Mullein - White)

Verbascum thapsus (Flannel Mullein)

Veronicastrum virginicum (Culver's Root)

Datura stramonium (Jimpson Weed)

Physalis virginiana (Virginia Ground Cherry)

Solanum carolinense (Carolina Horse Nettle)

Solanum rostratum (Buffalo-bur Nightshade)

Trillum sessile (Toadshade Trillium)

Trillum viridescens (Ozark Trillium)

Valerianella radiata (Corn Salad)

Glandularia canadensis (Rose Vervain)

Phryma leptostachya (American Lopseed)

Phyla lanceolata (Lanceleaf Fogfruit)

Verbena bracteata (Prostrate Vervain)

Verbena hastata (Blue Vervain)

Verbena simplex (Narrow-leaf Vervain)

Hybanthus concolor (Green Violet)

Viola bicolor (Johnny-jump-up)

Viola pedata (Bird's-foot Violet)

Viola pubescens (Downy Yellow Violet)

Viola sororia Downy Blue Violet)