Part 2

=Common Name Scientific Name Page= Acacia _Acacia_ 30 Adderstongue _Ophioglossum_ 28 Agoseris, wavyleaf _Microseris cuspidata_ 47 Agrimony _Agrimonia_ 35 Alfalfa _Medicago_ 32 Alkaligrass _Puccinellia_ 25 Alumroot _Heuchera_ 44 Alyceclover _Alysicarpus_ 30 Amaranth _Amaranthus_ 35 Ammannia _Ammannia_ 35 Amorpha _Amorpha_ 30, 55 Amsonia _Amsonia_ 35 Anemone _Anemone_ 35 Antelopehorn _Asclepiodora_ 37 Apple _Pyrus_ 57 Arrowhead _Sagittaria_ 30 Ash _Fraxinus_ 57 Asparagus _Asparagus_ 29 Aster _Aster_ 37 Avens _Geum_ 43 Baccharis _Baccharis_ 56 Bagpod _Glottidium_ 31 Bahia _Bahia_ 37 Bahiagrass _Paspalum notatum_ 24 Barberry _Berberis_ 56 Barley _Hordeum_ 22 Barnyardgrass _Echinochloa crusgalli_ 21 Basketflower _Centaurea americana_ 38 Basswood _Tilia_ 59 Beachgrass _Ammophila_ 18 Beakgrain _Diarrhena_ 20 Bean _Phaseolus_ 33 Bedstraw _Galium_ 43 Beebalm _Monarda_ 48 Beet _Beta_ 37 Beggarticks _Bidens_ 37 Bellflower _Campanula_ 38 Bentgrass _Agrostis_ 18 Bergia _Bergia_ 37 Berlandiera _Berlandiera_ 37 Bermudagrass _Cynodon_ 20 Berseem _Trifolium alexandrinum_ 34 Berula _Berula_ 37 Betony _Stachys_ 53 Bindweed _Convolvulus_ 40 Birch _Betula_ 56 Birdwoodgrass _Cenchrus setigerus_ 20 Bittercress _Cardamine_ 38 Bittersweet _Celastrus_ 56 Bitterweed _Hymenoxys odorata_ 45 Blackberry _Rubus_ 58 Blackberrylily _Belamcanda_ 29 Blackeyedsusan _Rudbeckia hirta_ 51 Blackfoot _Melampodium_ 47 Bladderfern _Cystopteris_ 28 Bladdernut _Staphylea_ 59 Bladderpod _Lesquerella_ 46 Bladderwort _Utricularia_ 54 Bloodroot _Sanguinaria_ 52 Blowoutgrass _Redfieldia_ 25 Blue-eyedgrass _Sisyrinchium_ 30 Bluegrass _Poa_ 24 Bluehearts _Buchnera_ 38 Bluestem _Andropogon_; _Bothriochloa_ 18 Bluets _Houstonia_ 44 Blueweed _Echium vulgare_ 41 Boltonia _Boltonia_ 38 Boneset _Eupatorium perfoliatum_ 42 Bottlebrushgrass _Hystrix_ 22 Bouncingbet _Saponaria officinalis_ 52 Boxelder _Acer negundo_ 55 Bracken _Pteridium_ 28 Brickellia _Brickellia_ 38 Bristlegrass _Setaria_ 25 Broadbean _Vicia faba_ 34 Brome _Bromus_ 19 Broom _Cytisus_ 31, 56 Broomcorn _Sorghum bicolor_ var. _technicum_ 25 Broomrape _Orobanche_ 49 Broomsedge _Andropogon virginicus_ 18 Broomweed _Gutierrezia dracunculoides_ 43 Browneyedsusan _Rudbeckia triloba_ 51 Browntopmillet _Panicum ramosum_ 23 Buckbrush _Symphoricarpos orbiculatus_ 59 Buckeye _Aesculus_ 55 Buckhorn _Plantago lanceolata_ 50 Buckthorn _Rhamnus_ 58 Buckwheat _Fagopyrum_ 42 Buffalogourd _Cucurbita foetidissima_ 40 Buffalograss _Buchloë_ 20 Buffelgrass _Pennisetum ciliare_ 24 Bugleweed _Lycopus_ 47 Bugseed _Corispermum nitidum_ 40 Bulbostylis _Bulbostylis_ 27 Bulrush _Scirpus_ 28 Bumelia _Bumelia_ 56 Bunchflower _Melanthium_ 29 Bundleflower _Desmanthus_ 31 Burclover _Medicago_ 32 Burcucumber _Sicyos_ 52 Burdock _Arctium_ 36 Burgrass _Tragus_ 26 Burhead _Echinodorus_ 29 Burnweed _Erechtites_ 41 Burragweed _Franseria tomentosa_ 42 Burreed _Sparganium_ 30 Burrograss _Scleropogon_ 25 Bursage _Franseria_ 42 Buttercup _Ranunculus_ 51 Butternut _Juglans cinerea_ 57 Buttonbush _Cephalanthus_ 56 Buttonweed _Diodia_ 41 Cabbage _Brassica oleracea_ 38 Calceolaria _Hybanthus_ 45 Caltrop _Kallstroemia_ 45 Camas _Camassia_ 29 Camomile _Anthemis_ 36 Camphorweed _Heterotheca_ 44 Canarygrass _Phalaris_ 24 Cane _Arundinaria_ 19 Cardinalflower _Lobelia cardinalis_ 47 Cardinalflower, western _Lobelia splendens_ 47 Carpetgrass _Axonopus_ 19 Carpetweed _Mollugo_ 48 Carrot _Daucus_ 41 Castorbean _Ricinus_ 51 Catalpa _Catalpa_ 56 Catchfly, sleepy _Silene antirrhina_ 52 Catchflygrass _Leersia lenticularis_ 22 Catnip _Nepeta cataria_ 48 Cattail _Typha_ 30 Ceanothus _Ceanothus_ 56 Centaurea _Centaurea_ 38 Centipedegrass _Eremochloa_ 21 Cerastium _Cerastium_ 38 Charlock _Brassica kaber_ 38 Cheat _Bromus secalinus_ 20 Cherry _Prunus_ 57 Chervil _Chaerophyllum_ 38 Chickencorn _Sorghum bicolor_ var. _drummondii_ 25 Chickpea _Cicer_ 31 Chickweed _Stellaria media_ 54 Chicory _Cichorium_ 39 Chineselantern _Physalis lobata_ 50 Chloris _Chloris_ 20 Chokecherry _Prunus virginiana_ 57 Cholla _Opuntia_ 48 Christmasfern _Polystichum acrostichoides_ 29 Cinquefoil _Potentilla_ 51 Circaea _Circaea_ 39 Clammyweed _Polanisia_ 50 Clearweed _Pilea_ 50 Clematis _Clematis_ 39 Cleomella _Cleomella_ 39 Cliffbrake _Pellaea_ 28 Climbing-buckwheat _Polygonum convolvulus_ 50 Climbingmilkweed _Ampelamus albidus_ 35 Cloakfern _Notholaena_ 28 Clover _Trifolium_ 34 Cockle, white _Lychnis alba_ 47 Cocklebur _Xanthium_ 55 Cockspur _Echinochloa_ 21 Coffeetree _Gymnocladus_ 32, 57 Cogongrass _Imperata_ 22 Collinsia _Collinsia_ 39 Columbine _Aquilegia_ 36 Comandra _Comandra_ 39 Compassplant _Silphium laciniatum_ 53 Coneflower _Dracopis_; _Rudbeckia_ 41, 51 Conyza _Conyza_ 40 Copperleaf _Acalypha_ 35 Cordgrass _Spartina_ 25 Coreopsis _Coreopsis_ 40 Corkwing, mountain _Cymopterus montanus_ 40 Corn _Zea_ 26 Corncockle _Agrostemma_ 35 Cornflower _Centaurea cyanus_ 38 Cornsalad _Valerianella_ 54 Corydalis _Corydalis_ 40 Cotton _Gossypium_ 44 Cottontop _Trichachne_ 26 Cottonwood _Populus_ 57 Cowlily _Nuphar_ 48 Cowpea _Vigna_ 35 Crabapple _Pyrus_ 57 Crabgrass _Digitaria_ 20 Crazyweed _Oxytropis_ 33 Creeper _Parthenocissus_ 57 Cress, hoary _Cardaria draba_ 38 Cristatella _Cristatella_ 40 Crotalaria _Crotalaria_ 31 Croton _Croton_ 40 Crotonopsis _Crotonopsis_ 40 Crowfoot _Ranunculus_ 51 Crownbeard _Verbesina_ 55 Crownvetch _Coronilla_ 31 Cryptantha _Cryptantha_ 40 Cudweed _Gnaphalium_ 43 Culversphysic _Veronicastrum virginicum_ 55 Cupgrass _Eriochloa_ 21 Cuphea _Cuphea_ 40 Curlymesquite _Hilaria belangeri_ 22 Currant _Ribes_ 58 Cutgrass _Leersia_ 22 Cyclanthera _Cyclanthera_ 40 Cymopterus _Cymopterus_ 40 Dalea _Dalea_ 31 Dallisgrass _Paspalum dilatatum_ 24 Dandelion _Taraxacum_ 54 Danthonia _Danthonia_ 20 Darnel _Lolium temulentum_ 22 Datura _Datura_ 41 Dayflower _Commelina_ 29 Deathcamas _Zygadenus_ 30 Deervetch _Lotus_ 32 Devilsclaw _Proboscidea_ 51 Dewberry _Rubus_ 58 Dianthera _Justicia_ 45 Diaperia _Diaperia_ 41 Dicliptera _Dicliptera_ 41 Ditaxis _Ditaxis_ 41 Dock _Rumex_ 51 Dodder _Cuscuta_ 40 Dogbane _Apocynum_ 36 Dogtail _Cynosurus_ 20 Dogweed _Dyssodia_ 41 Dogwood _Cornus_ 56 Draba _Draba_ 41 Dropseed _Sporobolus_ 25 Ducksmeat _Spirodela_ 30 Duckweed _Lemna_ 29 Dutchmans-breeches _Dicentra cucullaria_ 41 Dutchmanspipe _Aristolochia_ 36 Dwarfdandelion _Krigia_ 45 Echinacea _Echinacea_ 41 Echinocereus _Echinocereus_ 41 Einkorn _Triticum monococcum_ 26 Elderberry _Sambucus_ 59 Elephantsfoot _Elephantopus_ 41 Ellisia _Ellisia_ 41 Elm _Ulmus_ 59 Elodea _Elodea_ 29 Emmer _Triticum dicoccum_ 26 Engelmanndaisy _Engelmannia_ 41 Eriogonum _Eriogonum_ 42 Eryngo _Eryngium_ 42 Erysimum _Erysimum_ 42 Eulophus _Perideridia_ 49 Euonymus _Euonymus_ 56 Eupatorium _Eupatorium_ 42 Euphorbia _Euphorbia_ 42 Eveningprimrose _Oënothera_ 48 Evolvulus _Evolvulus_ 42 False-alyssum _Berteroa_ 37 Falseboneset _Kuhnia eupatorioides_ 45 Falsebuffalograss _Munroa_ 23 Falsedandelion _Pyrrhopappus_ 51 Falseflax _Camelina_ 38 Falsegarlic _Nothoscordum_ 29 Falsegrape _Ampelopsis_ 55 Falsenettle _Boehmeria_ 38 Falsenightshade _Chamaesaracha_ 39 Falsepennyroyal _Hedeoma_ 44 Falsepimpernel _Lindernia_ 46 Fameflower _Talinum_ 54 Fawnlily _Erythronium_ 29 Feathergrass, New Mexico _Stipa neomexicana_ 26 Feathertop _Pennisetum villosum_ 24 Fenugreek _Trigonella foenum-graecum_ 34 Fescue _Festuca_ 21 Figwort _Scrophularia_ 52 Filaree _Erodium cicutarium_ 42 Filbert _Corylus_ 56 Fimbristylis _Fimbristylis_ 27 Fingergrass _Digitaria_ 20 Fireweed _Epilobium angustifolium_ 41 Flatsedge _Cyperus_ 27 Flaveria _Flaveria_ 42 Flax _Linum_ 46 Fleabane _Erigeron_ 41 Flowerofanhour _Hibiscus trionum_ 44 Fluffgrass _Tridens pulchellus_ 26 Fluxweed _Isanthus_ 45 Fogfruit, wedgeleaf _Lippia lanceolata_ 46 Forgetmenot _Myosotis_ 48 Fountaingrass _Pennisetum ruppelii_ 24 Four-o’clock _Mirabilis_ 48 Foxtail _Alopecurus_ 18 Fringeorchid _Habenaria_ 29 Fuirena _Fuirena_ 27 Funnellily _Androstephium_ 29 Gaillardia _Gaillardia_ 43 Galleta _Hilaria jamesii_ 22 Galleta, big _Hilaria rigida_ 22 Gamagrass _Tripsacum_ 26 Garlic _Allium_ 29 Garlicmustard _Alliaria_ 35 Gaura _Gaura_ 43 Gayfeather _Liatris_ 46 Gentian _Gentiana_ 43 Geranium _Geranium_ 43 Gerardia _Gerardia_ 43 Germander _Teucrium_ 54 Ghostpipe _Orobanche uniflora_ 49 Gianthyssop _Agastache_ 35 Giantreed _Arundo_ 19 Gilia _Gilia_ 43 Ginkgo _Ginkgo_ 57 Globemallow _Sphaeralcea_ 53 Goatgrass _Aegilops_ 18 Goldaster _Chrysopsis_ 39 Goldenrod _Solidago_ 53 Goldenweed _Haplopappus_ 44 Goldstargrass _Hypoxis hirsuta_ 29 Gooseberry _Ribes_ 58 Goosefoot _Chenopodium_ 39 Goosegrass _Eleusine_ 21 Grama _Bouteloua_ 19 Grape _Vitis_ 59 Greasewood _Sarcobatus_ 59 Greenbriar _Smilax_ 30 Greenthread _Thelesperma_ 54 Gromwell _Lithospermum_ 46 Groundcherry _Physalis_ 49 Groundivy _Glechoma hederacea_ 43 Groundsel _Senecio_ 52 Guineagrass _Panicum maximum_ 23 Gumweed _Grindelia_ 43 Hackberry _Celtis_ 56 Hairgrass _Aira; Deschampsia_ 18,20 Hairsedge bulbstyle _Bulbostylis cappillaris_ 27 Hardinggrass _Phalaris tuberosa_ var. _stenoptera_ 24 Haresear _Conringia_ 40 Hawkweed _Hieracium_ 44 Hawthorn _Crataegus_ 56 Hazel _Corylus_ 56 Hedgehyssop _Gratiola_ 43 Hedgemustard _Sisymbrium officinale_ 53 Heliopsis _Heliopsis_ 44 Heliotrope _Heliotropium_ 44 Hemicarpha _Hemicarpha_ 28 Hemp _Cannabis_ 38 Henbit _Lamium amplexicaule_ 46 Hibiscus _Hibiscus_ 44 Hickory _Carya_ 56 Hilaria _Hilaria_ 22 Hoarhound _Marrubium_ 47 Hogpeanut _Amphicarpa_ 30 Holly _Ilex_ 57 Hollyfern _Polystichum_ 28 Honeylocust _Gleditsia_ 31, 57 Honeysuckle _Lonicera_ 47, 57 Hop _Humulus_ 45 Hophornbeam _Ostrya_ 57 Hoptree _Ptelea_ 57 Hornwort _Ceratophyllum_ 38 Horsebean _Vicia faba_ var. _equina_ 34 Horsegentian _Triosteum_ 54 Horsenettle _Solanum carolinense_ 53 Horseradish _Armoracia lapathifolia_ 36 Horsetail _Equisetum_ 28 Horseweed _Conyza canadensis_ 40 Houndstongue _Cynoglossum_ 40 Hyacinthbean _Dolichos_ 31 Hymenopappus _Hymenopappus_ 45 Hymenoxys _Hymenoxys_ 45 Hyparrhenia _Hyparrhenia_ 22 Indiangrass _Sorghastrum_ 25 Indianplantain _Cacalia_ 38 Indigo _Indigofera_ 32 Iris _Iris_ 29 Ironplant _Haplopappus spinulosus_ 44 Ironweed _Vernonia_ 55 Isopyrum _Isopyrum_ 45 Jackinthepulpit _Arisaema_ 29 Japanesemillet _Echinochloa crusgalli_ var. _frumentacea_ 21 Jaragua _Hyparrhenia rufa_ 22 Jerusalemartichoke _Helianthus tuberosus_ 44 Jimsonweed _Datura stramonium_ 41 Jobstears _Coix_ 20 Joepyeweed _Eupatorium_ 42 Johnnyjumpup _Viola kitaibeliana_ var. _rafinesquii_ 55 Johnsongrass _Sorghum halepense_ 25 Jointtail _Manisuris_ 22 Junegrass _Koeleria_ 22 Juniper _Juniperus_ 57 Kale _Brassica oleracea_ var. _acephala_ 38 Kidneyvetch _Anthyllis_ 30 Kikuyugrass _Pennisetum clandestinum_ 24 Knapweed, Russian _Centaurea repens_ 38 Knotgrass _Paspalum distichum_ 24 Knotweed _Polygonum_ 50 Kochia _Kochia_ 45 Krameria _Krameria_ 45 Kudzu _Pueraria_ 33 Kuhnia _Kuhnia_ 45 Lacegrass _Eragrostis capillaris_ 21 Ladiestresses _Spiranthes_ 30 Ladyslipper _Cypripedium_ 29 Lambsquarters _Chenopodium album_ 39 Larkspur _Delphinium_ 41 Lawngrass, Japanese _Zoysia japonica_ 26 Leadplant _Amorpha canescens_ 30, 55 Lentil _Lens_ 32 Lespedeza _Lespedeza_ 32, 57 Lettuce _Lactuca_ 46 Licorice _Glycyrrhiza_ 32 Lilac _Syringa_ 59 Lily _Lilium_ 29 Linden _Tilia_ 59 Lionsheart _Physostegia_ 50 Lipfern _Cheilanthes_ 28 Lippia _Lippia_ 46 Lobelia _Lobelia_ 47 Loco _Astragalus_ 30 Locust _Robinia_ 34, 58 Lomatium _Lomatium_ 47 Longtom _Paspalum lividum_ 24 Loosestrife _Lysimachia_ 47 Lophotocarpus _Lophotocarpus_ 29 Lopseed _Phryma_ 49 Lotus _Nelumbo_ 48 Lovegrass _Eragrostis_ 21 Lupine _Lupinus_ 32 Lythrum _Lythrum_ 47 Macuillamia _Bacopa_ 37 Maidenhairfern _Adiantum_ 28 Malacothrix _Malacothrix_ 47 Mallow _Malva_ 47 Mamillaria _Mamillaria_ 47 Manillagrass _Zoysia matrella_ 26 Mannagrass _Glyceria_ 22 Maple _Acer_ 55 Marbleseed _Onosmodium_ 48 Marshfern _Dryopteris thelypteris_ 28 Mascarenegrass _Zoysia tenuifolia_ 26 Matgrass _Nardus_ 23 Matrimonyvine _Lycium halimifolium_ 57 Mayapple _Podophyllum_ 50 Meadowrue _Thalictrum_ 54 Medic _Medicago_ 32 Melic _Melica_ 22 Mentzelia _Mentzelia_ 47 Mesquite _Prosopis_ 33, 57 Milkvetch _Astragalus_ 30 Milkweed _Asclepias_ 36 Millet _Panicum_; _Setaria_ 25 Mint _Mentha_ 47 Mitchellgrass _Astrebla_ 19 Mockbishopweed _Ptilimnium_ 51 Mockcucumber _Echinocystis_ 41 Molassesgrass _Melinis_ 22 Moneywort _Lysimachia nummularia_ 47 Monkeyflower _Mimulus_ 47 Monolepis _Monolepis_ 48 Moonseed _Menispermum_ 47 Morningglory _Ipomoea_ 45 Motherwort _Leonurus_ 46 Mountainash _Sorbus_ 59 Mountainmint _Pycnanthemum_ 51 Mousetail _Myosurus_ 48 Mudplantain _Heteranthera_ 29 Muhly _Muhlenbergia_ 22 Mulberry _Morus_ 57 Mullein _Verbascum_ 54 Muskthistle _Carduus nutans_ 38 Mustard _Brassica_ 38 Naiad _Najas_ 29 Nailwort _Paronychia_ 49 Napiergrass _Pennisetum purpureum_ 24 Nasturtium _Nasturtium_ 48 Natalgrass _Rhynchelytrum roseum_ 25 Needleandthread _Stipa comata_ 26 Needlegrass _Stipa_ 26 Nemastylis _Nemastylis_ 29 Nepeta _Nepeta_ 48 Nettle _Urtica_ 54 Nightshade _Solanum_ 53 Nimblewill _Muhlenbergia schreberi_ 23 Nitgrass _Gastridium_ 22 Noseburn _Tragia_ 54 Nutgrass _Cyperus_ 27 Oak _Quercus_ 58 Oakleech _Dasistoma_ 41 Oat _Avena_ 19 Oatgrass _Arrhenatherum_ 19 Okra _Hibiscus esculentus_ 44 Onion _Allium_ 29 Oniongrass _Melica_ 22 Orach, tumbling _Atriplex rosea_ 37 Orchardgrass _Dactylis_ 20 Orcuttia _Orcuttia_ 23 Oregongrape _Mahonia aquifolium_ 57 Osageorange _Maclura_ 57 Othake _Palafoxia_ 49 Oxalis _Oxalis_ 49 Oxeyedaisy _Chrysanthemum leucanthemum_ 39 Paintbrush _Castilleja_ 38 Paleseed _Conobea_ 40 Pampasgrass _Cortaderia_ 20 Pangolagrass _Digitaria decumbens_ 20 Panicum _Panicum_ 23 Paperflower _Psilostrophe_ 51 Pappusgrass _Pappophorum_ 24 Paragrass _Panicum purpurascens_ 23 Parrotfeather _Myriophyllum_ 48 Parsnip _Pastinaca_ 49 Parthenium _Parthenium_ 49 Partridgepea _Cassia_ 31 Paspalum _Paspalum_ 24 Pawpaw _Asimina_ 55 Pea _Pisum_ 33 Peanut _Arachis_ 30 Pear _Pyrus communis_ 57 Pearlmillet _Pennisetum glaucum_ 24 Pearlwort _Sagina_ 52 Peashrub _Caragana_ 31, 56 Peavine _Lathyrus_ 32 Pecan _Carya illinoensis_ 56 Pectis _Pectis_ 49 Pedicularis _Pedicularis_ 49 Pellitory _Parietaria_ 49 Pencilflower _Stylosanthes_ 34 Pennisetum _Pennisetum_ 24 Pennycress _Thlaspi_ 54 Penstemon _Penstemon_ 49 Penthorum _Penthorum_ 49 Peppergrass _Lenidium densiflorum_ 46 Pepperweed _Lepidium_ 46 Pepperwort _Marsilea_ 28 Perilla _Perilla_ 49 Persimmon _Diospyros_ 56 Phacelia _Phacelia_ 49 Phlox _Phlox_ 49 Pigeonpea _Cajanus_ 31 Pigweed _Amaranthus_ 35 Pimpernel _Anagallis_ 35 Pinedropseed _Blepharoneuron_ 19 Pinegrass _Calamagrostis rubescens_ 20 Pinweed _Lechea_ 46 Plantain _Plantago_ 50 Plum _Prunus_ 57 Plumegrass _Erianthus_ 21 Poisonhemlock _Conium maculatum_ 40 Poisonivy _Rhus radicans_ 58 Poisonvetch _Astragalus_ 30 Pokeberry _Phytolacca_ 50 Polemonium _Polemonium_ 50 Polygala _Polygala_ 50 Polypogon _Polypogon_ 25 Polytaenia _Polytaenia_ 50 Pondweed _Potamogeton_ 29 Poolmat _Zannichellia_ 30 Poplar _Populus_ 57 Poppymallow _Callirhoë_ 38 Porcupinegrass _Stipa spartea_ 26 Portulaca _Portulaca_ 50 Potato _Solanum tuberosum_ 53 Potatobean _Apios_ 30 Prairieclover _Petalostemum_ 33 Prairieconeflower _Ratibida_ 51 Prairiegentian _Eustoma_ 42 Pricklyash _Xanthoxylum_ 59 Pricklypear _Opuntia_ 48 Pricklypoppy _Argemone_ 36 Princesplume _Stanleya_ 53 Proso _Panicum miliaceum_ 23 Puncturevine _Tribulus_ 54 Purplerocket _Iodanthus_ 45 Purpletop _Tridens flavus_ 26 Purslane _Portulaca_ 50 Pussytoes _Antennaria_ 35 Quackgrass _Agropyron repens_ 18 Quakinggrass _Briza_ 19 Quickweed _Galinsoga_ 43 Quillwort _Isoëtes_ 28 Rabbitbrush _Chrysothamnus_ 56 Radish _Raphanus_ 51 Ragweed _Ambrosia_ 35 Rainlily _Cooperia_ 29 Rape _Brassica rapa_ 38 Raspberry _Rubus_ 58 Rattlesnakefern _Botrychium_ 28 Rattlesnakeroot _Prenanthes_ 51 Ravennagrass _Erianthus ravennae_ 21 Razorsedge _Scleria_ 28 Redbud _Cercis_ 31, 56 Redcedar _Juniperus virginiana_ 57 Redtop _Agrostis alba_ 18 Reed _Phragmites_ 24 Reedgrass _Calamagrostis_ 20 Rhodesgrass _Chloris gayana_ 20 Rhubarb _Rheum_ 51 Rice _Oryza_ 23 Ricegrass _Oryzopsis_ 23 Ricegrass, Mandan X _Striporyzopsis caduca_ 26 Ringwing _Cycloloma_ 40 Rockcress _Arabis_ 36 Rocket _Hesperis_ 44 Rocketsalad _Eruca_ 42 Rockjasmine _Androsace_ 35 Rose _Rosa_ 58 Rosegentian _Sabatia_ 52 Rosemallow _Hibiscus_ 44 Rosinweed _Silphium_ 53 Rotala _Rotala_ 51 Ruellia _Ruellia_ 51 Rush _Juncus_ 28 Rushpea _Hoffmanseggia_ 32 Russianolive _Elaeagnus_ 56 Russianthistle _Salsola_ 52 Rutabaga _Brassica rapa_ 38 Rye _Secale_ 25 Ryegrass _Lolium_ 22 Sacaton _Sporobolus_ 25, 26 Safflower _Carthamus_ 38 Sage _Salvia_ 52 Sagebrush _Artemisia_ 36, 55 Sagewort _Artemisia_ 36 Sainfoin _Onobrychis_ 33 Salsify _Tragopogon_ 54 Saltbush _Atriplex_ 37, 55 Saltgrass _Distichlis_ 21 Samolus _Samolus_ 52 Sandbur _Cenchrus_ 20 Sandgrass _Triplasis_ 26 Sandreed _Calamovilfa_ 20 Sandverbena _Abronia_ 35 Sandwort _Arenaria_ 36 Sanicle _Sanicula_ 52 Sassafras _Sassafras_ 59 Scouringrush _Equisetum_ 28 Scurfpea _Psoralea_ 33 Seablite _Suaeda_ 54 Sedge _Carex_ 27 Seedbox _Ludwigia_ 47 Seepweed _Suaeda_ 54 Selenia _Selenia_ 52 Selfheal _Prunella_ 51 Senna _Cassia_ 31 Sensitivebriar _Schrankia_ 34 Sensitivefern _Onoclea_ 28 Serradella _Ornithopus_ 33 Serviceberry _Amelanchier_ 55 Sesame _Sesamum_ 52 Sesbania _Sesbania_ 34 Shepherdspurse _Capsella_ 38 Shootingstar _Dodecatheon_ 41 Sicklepod _Arabis canadensis_ 36 Sida _Sida_ 52 Silene _Silene_ 52 Silvergrass _Miscanthus_ 22 Sisymbrium _Sisymbrium_ 53 Skeletongrass _Gymnopogon_ 22 Skeletonplant _Lygodesmia_ 47 Skullcap _Scutellaria_ 52 Sleepygrass _Stipa robusta_ 26 Sloughgrass _Beckmannia_ 19 Smartweed _Polygonum_ 50 Smilograss _Oryzopsis miliacea_ 23 Smutgrass, rattail _Sporobolus poiretii_ 26 Snailseed _Cocculus_ 39 Snakecotton _Froelichia_ 43 Snakeroot, white _Eupatorium rugosum_ 42 Snakeweed _Gutierrezia_ 43, 57 Snapweed _Impatiens_ 45 Sneezeweed _Helenium_ 44 Snowberry _Symphoricarpos_ 59 Snow-on-the-mountain _Euphorbia marginata_ 42 Soapberry _Sapindus_ 59 Soapweed _Yucca_ 30, 59 Soapwort _Saponaria_ 52 Solomonplume _Smilacina_ 30 Solomonseal _Polygonatum_ 29 Sophora _Sophora_ 34 Sorghum _Sorghum_ 25 Sorrel _Rumex_ 51 Sowthistle _Sonohus_ 53 Soybean _Glycine_ 31 Spanishneedles _Bidens bipinnata_ 37 Speedwell _Veronica_ 55 Spermolepis _Spermolepis_ 53 Spiderflower _Cleome_ 39 Spiderwort _Tradescantia_ 30 Spikesedge _Eleocharis_ 27 Spleenwort _Aspleninum_ 28 Sprangletop _Leptochloa_ 22 Springbeauty _Claytonia_ 39 Spurge _Euphorbia_ 42 Squirreltail _Sitanion_ 25 St. augustinegrass _Stenotaphrum_ 26 St. johnswort _Hypericum_ 45 Stargrass _Cynodon plectostachyum_ 20 Stenosiphon _Stenosiphon_ 54 Stickseed _Hackelia_; _Lappula_ 44, 46 Stillingia _Stillingia_ 54 Stinkgrass _Eragrostis cilianensis_ 21 Stonecrop _Sedum_ 52 Strawberry _Fragaria_ 42 Sudangrass _Sorghum bicolor_ var. _sudanense_ 25 Sugarcane _Saccharum_ 25 Sulla _Hedysarum_ 32 Sumac _Rhus_ 58 Sumpweed _Iva_ 45 Sunflower _Helianthus_ 44 Sunrose _Helianthemum_ 44 Sweetclover _Melilotus_ 33 Sweetflag _Acorus_ 29 Sweetpea _Lathyrus odoratus_ 32 Sweetpotato _Ipomoea batatas_ 45 Sweetroot _Osmorhiza_ 49 Switchgrass _Panicum virgatum_ 24 Sycamore _Platanus_ 57 Taenidia _Taenidia_ 54 Tamarisk _Tamarix_ 59 Tangierpea _Lathyrus tingitanus_ 32 Tanglehead _Heteropogon_ 22 Tansy _Tanacetum_ 54 Tansymustard _Descurainia_ 41 Teff _Eragrostis tef_ 21 Teosinte _Euchlaena_ 21 Tephrosia _Tephrosia_ 34 Thaspium _Thaspium_ 54 Thatchgrass _Hyparrhenia hirta_ 22 Themeda _Themeda_ 26 Thermopsis _Thermopsis_ 34 Thimbleberry, fragrant _Rubus odoratus_ 58 Thistle _Cirsium_ 39 Threeawn _Aristida_ 19 Tickclover _Desmodium_ 31 Tickseed _Corispermum_ 40 Tidestromia _Tidestromia_ 54 Timothy _Phleum_ 24 Toadflax _Linaria_ 46 Tobacco _Nicotiana_ 48 Tobosa _Hilaria mutica_ 22 Tomato _Lycopersicum_ 47 Toothwort _Dentaria_ 41 Torpedograss _Panicum repens_ 23 Tovara _Tovara_ 54 Townsendia _Townsendia_ 54 Treeofheaven _Ailanthus_ 55 Trefoil _Lotus_ 32 Trichloris _Trichloris_ 26 Tridens _Tridens_ 26 Trigonella _Trigonella_ 34 Trisetum _Trisetum_ 26 Trumpetcreeper _Campsis_ 56 Tumblegrass _Schedonnardus_ 25 Tumblemustard _Sisymbrium altissimum_ 53 Tumbleweed _Amaranthus graecizans_ 35 Turnip _Brassica napus_ 38 Uniola _Uniola_ 26 Vaseygrass _Paspalum urvillei_ 24 Velvetbean _Stizolobium_ 34 Velvetgrass _Holcus_ 22 Velvetleaf _Abutilon theophrasti_ 35 Venuslookingglass _Specularia_ 53 Verbena _Verbena_ 54 Vernalgrass _Anthoxanthum_ 18 Vetch _Vicia_ 34 Viburnum _Viburnum_ 59 Vinemesquite _Panicum obtusum_ 23 Violet _Viola_ 55 Virginsbower _Clematis virginiana_ 39 Wahoo, eastern _Euonymus atropurpureus_ 56 Walkingfern _Camptosorus_ 28 Walnut _Juglans_ 57 Watercress _Rorippa_ 51 Waterhemlock _Cicuta_ 39 Waterhemp _Acnida_ 35 Waterhyssop, disk _Bacopa rotundifolia_ 37 Waterleaf _Hydrophyllum_ 45 Waterlily _Nymphaea_ 48 Waterplantain _Alisma_ 29 Waterprimrose _Jussiaea_ 45 Waterstarwort _Callitriche_ 38 Wedgescale _Sphenopholis_ 25 Westerndaisy _Astranthium_ 37 Wheat _Triticum_ 26 Wheatgrass _Agropyron_ 18 Whitegrass _Leersia virginica_ 22 Widgeongrass _Ruppia_ 30 Wildbean _Strophostyles_ 34 Wildginger _Asarum_ 36 Wildindigo _Baptisia_ 31 Wildrice _Zizania_; _Zizaniopsis_ 26 Wildrye _Elymus_ 21 Willow _Salix_ 58 Willowweed _Epilobium_ 41 Windmillgrass _Chloris verticillata_ 20 Wingstem _Verbesina alternifolia_ 55 Wintercress _Barbarea_ 37 Winterfat _Eurotia_ 56 Wirelettuce _Stephanomeria_ 54 Wisteria _Wisteria_ 35, 59 Witchgrass _Leptoloma_; _Panicum_ 22, 23 Witchweed _Striga lutea_ 54 Wolffia _Wolffia_ 30 Wolftail _Lycurus_ 22 Woodfern _Dryopteris_ 28 Woodnettle _Laportea_ 46 Woodreed _Cinna_ 20 Woodsia _Woodsia_ 28 Yam _Dioscorea_ 29 Yarrow _Achillea_ 35 Yerbadetajo _Eclipta alba_ 41 Zinnia _Zinnia_ 55 Zizia _Zizia_ 55 Zoysia _Zoysia_ 26