Goat's Rue, 60

Golden Alexander, 81

Golden Currant, 49

Golden Glow, 128

Goldenrod, 125-127

Golden Saxifrage, 50

Golden Seal, 38

Gold-thread, 39

Good King Henry, 29

Gooseberry, 49

Goosefoot, 28, 29

Goosefoot Family, 28

Gourd Family, 112

Gramineae, 4

Grape, 72

Grape Family, 71

Grape Hyacinth, 14

Grass Family, 4

Grass of Parnassus, 50

Grass, Star, 14

Gratiola, 104

Gray-headed Coneflower, 128

Great Lobelia, 113

Great Solomon's Seal, 11

Great-spurred Violet, 75

Greek Valerian, 92

Green Ash, 88

Green Brier, 11

Green Foxtail, 4

Green Milkweed, 90

Green Sorrel, 25

Green Violet, 75

Grindelia, 128

Ground Cherry, 101

Ground Hemlock, 2

Ground Ivy, 98

Groundsel, 128

Gum Plant, 128

Gymnocladus, 58

Gypsophila, 34

Gypsophyll, 34

Habenaria, 18, 19

Hackberry, 24

Hair Grass, 6

Halenia, 89

Haloragidaceae, 79

Hamamelidaceae, 51

Hamamelis, 51

Hand-leaf Violet, 75

Harbinger of Spring, 81

Hardhack, 53

Harebell, 112

Hare's Ear, 42

Hawksbeard, 117

Hawkweed, 116, 117

Hazel, 22

Heather, False, 74

Heath Family, 84

Hedeoma, 95

Hedge Hyssop, 104

Hedge Mustard, 44

Hedge Nettle, 99

Helenium, 127, 128

Helianthemum, 74

Helianthus, 128-130

Heliopsis, 123

Hemerocallis, 11

Hemlock, 1

Hemlock, Ground, 2

Hemlock Parsley, 83

Hemlock, Poison, 83

Hemlock, Water, 82

Hemp, 24

Hemp, Indian, 90

Hemp Nettle, 99

Hemp, Water, 30

Hemp Weed, 131

Henbane, 101

Hepatica, 38

Heracleum, 82

Herb Robert, 64

Herb Sophia, 43

Hercules' Club, 80

Hesperis, 47

Heteranthera, 10

Heuchera, 50, 51

Hibiscus, 72

Hickory, 21

Hieracium, 116, 117

Hill's Oak, 23

Hippuris, 79

Hoarhound, 96

Hoarhound, Water, 95

Hobble-bush, 111

Hog Peanut, 59

Holly Family, 69

Holly, Mountain, 69

Honewort, 82

Honey Locust, 58

Honeysuckle, 110

Honeysuckle, Bush, 110

Honeysuckle Family, 109

Hop, 24

Hop Clover, 60

Hop Tree, 65

Hordeum, 4

Hornbeam, 21

Horned Pondweed, 2

Hornwort, 34

Hornwort Family, 34

Horse Balm, 95

Horse Chestnut, 70

Horse Mint, 96

Horse Nettle, 100

Horse Radish, 46

Horse Weed, 130, 131

Hound's Tongue, 93

Houstonia, 108

Huckleberry, 86

Hudsonia, 74

Humulus, 24

Hyacinth, Wild, 14

Hybanthus, 75

Hydrocharitaceae, 3

Hydrocotyle, 80

Hydrophyllaceae, 93

Hydrophyllu