59Compass Plant,127Compositae,113Composite Family,113Coneflower, Gray-headed,128Coneflower, Purple,131Conioselinum,83Conium,83Conopholis,106Conringia,42Convolvulaceae,91Convolvulus,91,92Coptis,39Corallorhiza,16Coral Root,16Coreopsis,123,124Corispermum,28Cork Elm,24Cornaceae,83Corn Cockle,33Corn Flower,121Corn Gromwell,94Corn Salad,111Cornus,83,84Corydalis,42Corylus,22Costmary,121Cotton Grass,8Cotton Thistle,118Cottonwood,19Cowbane,81Cowherb,34Cow Parsnip,82Cowslip,36Cow Wheat,104Crab,54Crab Grass,5Crack Willow,20Cranberry,85Cranberry Tree,111Crane-fly Orchis,16Crane's-bill,64,65Crassulaceae,48Creeping Cedar,1Creeping Wahoo,69Crepis,117Cress,43-47Cress, Bitter,45,47Cress, Field,46Cress, Garden,45,46Cress, Lake,45,46Cress, Mouse-ear,47Cress, Penny,46Cress, Rock,46,47Cress, Water,45Cress, Winter,44Cress, Yellow,43Crotalaria,59Crowberry,68Crowberry Family,68Crowfoot,35Crowfoot, Cursed,37Crowfoot Family,35Crowfoot, Sea-side,36Crowfoot, Small-flowered,36Crowfoot, Water,35,37Cruciferae,42Cryptotaenia,82Cuckoo Flower,45Cucurbitaceae,112Cudweed,120,121Culver's Root,104Cup Plant,123Currant,49,50Currant, Indian,110Cursed Crowfoot,37Cuscuta,92Custard Apple Family,40Cut-grass,5Cycloloma,29Cynanchum,90Cynoglossum,93,94Cynthia,115Cyperaceae,7Cyperus,8Cypress Spurge,67Cypripedium,18Dactylis,6Daisy, Ox-eye,131Dalibarda,56Dame's Rocket,47Dandelion,115Dandelion, Dwarf,115Datura,100Daucus,82Day-flower,9Day Lily,11Dead Nettle,99Decodon,77Deerberry,86Dentaria,44Deptford Pink,34Desmodium,62,63Devil's Club,80Dewberry,53Dianthera,107Dianthus,34Dicentra,41Diervilla,110Digitaria,5Dioscorea,14Dioscoreaceae,14Diplotaxis,42,43Dipsacaceae,112Dipsacus,112Dirca,77Ditch Stonecrop,49Dock,26Dock, Prairie,122Dodder,92Dodecatheon,87Dogbane,90Dogbane Family,90Dog Fennel,130Dog Rose,52Dog's-tooth Violet,12Dog Violet,76Dogwood,83,84Dogwood Family,83Downy Mint,78Draba,42,46Dracocephalum,96Dragon Head,96Dragon Head, False,99Dragon Root,8Drop-seed,5Drosera,48Droseraceae,48Duckweed,9Duckweed Family,9Dulichium,7Dutchman's Breeches,41Dwarf Birch,22Dwarf Dandelion,115Dwarf Dogwood,83Dwarf Ginseng,80Dwarf Iris,15Dwarf Mistletoe,25Dwarf Raspberry,53Dwarf Water Plantain,3Dwarf White Trillium,12Dyer's Greenweed,58Echinochloa,5Echinocystis,112Echinodorus,3Echinops,117Echium,94Eel Grass,3Elaeagnaceae,77Elatinaceae,74Elatine,74Elder,109Elder, Box,70Elder, Marsh,114Elecampane,127Eleocharis,7Eleusine,6Elm,24Elodea,3Elymus,6Empetraceae,68Empetrum,68Enchanter's Nightshade,78English Plantain,107Epifagus,106Epigaea,85Epilobium,79Epipactis,17Eragrostis,7Erechtites,122Ericaceae,84Erigenia,81Erigeron,130-132Eriocaulaceae,9Eriocaulon,9Eriophorum,8Erodium,64Eryngium,80Erysimum,43Erythronium,12Eupatorium,121,122Euphorbia,67,68Euphrasia,102Evening Primrose,78Evening Primrose Family,78Everlasting,120Everlasting, Pearly,120Evonymus,69Eyebright,102Fagaceae,22Fagopyrum,27Fagus,22Fall Dandelion,115False Asphodel,14False Boneset,122False Buckwheat,28False Dragon Head,99False Flax,42False Foxglove,102False Gromwell,93False Heather,74False Loosestrife,78False Mermaid,68False Mermaid Family,68False Mitrewort,51False Nettle,24False Pimpernel,104False Solomon's Seal,14Fatsia,80Fennel,81Fennel, Dog,130Fescue Grass,7Festuca,7Feverfew,130Feverwort,109Field Cress,46Field Garlic,13Figwort,103Figwort Family,101Filipendula,57Fire Pink,33Fireweed,79,122Five-finger,55Flax,63Flax, False,42Flax Family,63Fleabane,131,132Floating Foxtail,4Floating Heart,88Floerkea,68Flowering Dogwood,83Flowering Raspberry,54Flowering Wintergreen,65Flower-of-an-hour,72Foeniculum,81Fog Fruit,99Forget-me-not,94Forked Chickweed,31Four-o'Clock Family,31Foxglove, False,102Fox Grape,72Foxtail,4Foxtail, Floating,4Fragaria,56Frasera,88Fraxinus,88Fringed Gentian,89Fringed Orchis,19Frog's Bit Family,3Frost Grape,72Frostweed,74Fumaria,42Fumariaceae,41Fumitory,42Fumitory, Climbing,41Fumitory Family,41Galeopsis,99Gale, Sweet,21Galinsoga,130Galium,108,109Garden Cress,45,46Garden Phlox,92Garlic, Field,13Gaultheria,86Gaura,79Gaylussacia,86Genista,58Gentian,89Gentiana,89Gentianaceae,88Gentian Family,88Gentian, Spurred,89Geraniaceae,64Geranium,64,65Geranium Family,64Gerardia,102,103Geum,56,57Giant Hyssop,97Giant Ragweed,114Gillenia,57Ginseng,80Gleditsia,58Globe-flower,36Globe Thistle,117Glyceria,7Gnaphalium,120,121Goat's Rue,60Golden Alexander,81Golden Currant,49Golden Glow,128Goldenrod,125-127Golden Saxifrage,50Golden Seal,38Gold-thread,39Good King Henry,29Gooseberry,49Goosefoot,28,29Goosefoot Family,28Gourd Family,112Gramineae,4Grape,72Grape Family,71Grape Hyacinth,14Grass Family,4Grass of Parnassus,50Grass, Star,14Gratiola,104Gray-headed Coneflower,128Great Lobelia,113Great Solomon's Seal,11Great-spurred Violet,75Greek Valerian,92Green Ash,88Green Brier,11Green Foxtail,4Green Milkweed,90Green Sorrel,25Green Violet,75Grindelia,128Ground Cherry,101Ground Hemlock,2Ground Ivy,98Groundsel,128Gum Plant,128Gymnocladus,58Gypsophila,34Gypsophyll,34Habenaria,18,19Hackberry,24Hair Grass,6Halenia,89Haloragidaceae,79Hamamelidaceae,51Hamamelis,51Hand-leaf Violet,75Harbinger of Spring,81Hardhack,53Harebell,112Hare's Ear,42Hawksbeard,117Hawkweed,116,117Hazel,22Heather, False,74Heath Family,84Hedeoma,95Hedge Hyssop,104Hedge Mustard,44Hedge Nettle,99Helenium,127,128Helianthemum,74Helianthus,128-130Heliopsis,123Hemerocallis,11Hemlock,1Hemlock, Ground,2Hemlock Parsley,83Hemlock, Poison,83Hemlock, Water,82Hemp,24Hemp, Indian,90Hemp Nettle,99Hemp, Water,30Hemp Weed,131Henbane,101Hepatica,38Heracleum,82Herb Robert,64Herb Sophia,43Hercules' Club,80Hesperis,47Heteranthera,10Heuchera,50,51Hibiscus,72Hickory,21Hieracium,116,117Hill's Oak,