| Latin Name | Common Name | Edibility Rating | Medicinal Rating |
| Abelmoschus moschatus | Musk Mallow,Musk Okra | 2 | 3 |
| Abies alba | Silver Fir, Christmas Tree Fir, European Silver Fir, Silver | 2 | 3 |
| Abies balsamea | Balsam Fir | 3 | 5 |
| Abies concolor | Colorado Fir, White fir | 0 | 2 |
| Abies grandis | Grand Fir, Giant Fir, Lowland White Fir | 2 | 2 |
| Abies lasiocarpa | Subalpine Fir, Alpine Fir | 2 | 2 |
| Abies sibirica | Siberian Fir | 0 | 1 |
| Abies spectabilis | Himalayan Fir | 0 | 2 |
| Abobra tenuifolia | Cranberry Gourd | 1 | 0 |
| Abronia fragrans | Snowball Sand Verbena | 2 | 1 |
| Acacia dealbata | Mimosa, Silver wattle | 2 | 0 |
| Acacia farnesiana | Sweet Acacia, Perfume Acacia, Huisache | 2 | 2 |
| Acacia longifolia | Sydney Golden Wattle, Acacia | 3 | 0 |
| Acacia melanoxylon | Blackwood, Australia Acacia, Black Acacia, Blackwood Acacia | 2 | 1 |
| Acacia podalyriifolia | Queensland Silver Wattle, Pearl wattle | 1 | 0 |
| Acacia verticillata | Prickly Moses | 1 | 0 |
| Achillea ageratum | Mace, Sweet-nancy | 2 | 0 |
| Achillea millefolium | Yarrow, Boreal yarrow, California yarrow, Giant yarrow, Coast yarrow, Western yarrow, Pacific yarrow | 3 | 4 |
| Achillea ptarmica | Sneeze-Wort, Sneezeweed | 2 | 1 |
| Aciphylla squarrosa | Speargrass | 2 | 0 |
| Acorus calamus | Sweet Flag - Calamus | 3 | 4 |
| Acorus gramineus | Grass-leaved Sweet Rush, Japanese Sweet Flag, Dwarf Sweet Flag | 3 | 3 |
| Actinidia arguta | Tara Vine | 5 | 0 |
| Actinidia arguta cordifolia | | 4 | 0 |
| Actinidia chinensis | Kiwi | 4 | 2 |
| Actinidia coriacea | | 3 | 0 |
| Actinidia deliciosa | Kiwi Fruit | 5 | 1 |
| Actinidia kolomikta | Kiwi | 4 | 0 |
| Actinidia melanandra | Red Kiwi | 4 | 0 |
| Actinidia polygama | Silver Vine | 4 | 2 |
| Adenophora liliifolia | Ladybells, Lilyleaf | 2 | 0 |
| Adenostoma fasciculatum | Greasewood | 0 | 1 |
| Adenostoma sparsifolium | Redshank | 1 | 1 |
| Aegle marmelos | Bael Tree, Golden Apple, Bengal Quince | 3 | 3 |
| Aesculus californica | Californian Buckeye, California Horsechestnut | 3 | 1 |
| Aesculus hippocastanum | Horse Chestnut, European Horsechestnut, Common Horsechestnut | 3 | 4 |
| Aesculus parviflora | Bottlebrush buckeye | 2 | 1 |
| Aethusa cynapium | Fool's Parsley | 1 | 1 |
| Agastache foeniculum | Anise Hyssop, Blue giant hyssop | 5 | 1 |
| Ageratum conyzoides | Goatweed, Tropical whiteweed | 0 | 3 |
| Agrimonia eupatoria | Agrimony, Churchsteeples | 2 | 3 |
| Ailanthus altissima | Tree Of Heaven | 1 | 3 |
| Ajuga chamaepitys | Ground Pine, Yellow bugle | 0 | 2 |
| Akebia quinata | Akebia, Chocolate vine, Fiveleaf Akebia, Chocolate Vine | 4 | 2 |
| Akebia trifoliata | Akebia, Threeleaf Akebia | 4 | 2 |
| Alangium chinense | | 0 | 3 |
| Alhagi maurorum | Camel Thorn | 2 | 2 |
| Alliaria petiolata | Garlic Mustard | 3 | 2 |
| Allium flavum | Small Yellow Onion, Ornamental Onion | 2 | 2 |
| Allium moly | Golden Garlic, Ornamental Onion | 4 | 2 |
| Allium neapolitanum | Daffodil Garlic, White garlic | 5 | 2 |
| Allium schoenoprasum | Chives, Wild chives, Flowering Onion | 5 | 2 |
| Allium triquetrum | Three-Cornered Leek | 5 | 2 |
| Alstroemeria ligtu | Alstroemeria, St. Martin's Flower | 3 | 0 |
| Ammi majus | Bishop's Weed, Large bullwort, Queen Anne's Lace, Bishop's Flower | 1 | 3 |
| Ammi visnaga | Visnaga. Khella. Bishop's Weed, Toothpickweed | 1 | 5 |
| Amomyrtus luma | Luma, Chilean guava, | 3 | 0 |
| Amorpha fruticosa | False Indigo, False indigo bush | 1 | 2 |
| Amorphophallus paeoniifolius | Elephant Yam, Whitespot giant arum | 4 | 2 |
| Amorphophallus rivieri | Devil's Tongue, Umbrella Arum, Leopard Palm, Snake Palm | 2 | 2 |
| Anacamptis pyramidalis | Pyramidal Orchid | 2 | 1 |
| Anchusa officinalis | Alkanet, Common bugloss | 2 | 1 |
| Anethum graveolens | Dill | 4 | 3 |
| Angelica archangelica | Angelica, Norwegian angelica | 3 | 3 |
| Angelica glauca | | 2 | 1 |
| Anredera cordifolia | Madeira Vine, Heartleaf madeiravine | 2 | 0 |
| Anthemis cotula | Mayweed, Stinking chamomile | 1 | 2 |
| Anthoxanthum odoratum | Sweet Vernal Grass | 2 | 2 |
| Anthriscus cerefolium | Chervil, Garden chervil | 3 | 2 |
| Apios americana | Ground Nut | 5 | 1 |
| Apium australe | | 3 | 0 |
| Apium graveolens | Wild Celery. Ajmod, Ajwain-ka-patta (Indian) | 3 | 3 |
| Apium prostratum | Sea Celery, Prostrate marshwort | 3 | 0 |
| Aponogeton distachyos | Water Hawthorn, Cape pondweed, Vleikos | 2 | 0 |
| Aquilaria crassna | Agar Wood, Agarwood | 0 | 3 |
| Aquilaria malaccensis | Agar Wood, Eaglewood, Indian Aloewood, Aloeswood | 1 | 3 |
| Aquilaria sinensis | Agar Wood, Pak Muk Heung, White Wood Incense | 0 | 3 |
| Aquilegia canadensis | Wild Columbine, Red columbine, Meeting Houses, Common Columbine | 2 | 2 |
| Aquilegia vulgaris | Columbine, European columbine, Granny's Bonnet, European Crowfoot | 2 | 1 |
| Aralia hispida | Bristly Sarsaparilla | 2 | 1 |
| Araujia sericifera | Cruel Plant, White bladderflower | 1 | 0 |
| Arbutus andrachne | Grecian StrawberryTree | 3 | 0 |
| Arbutus menziesii | Madrona, Pacific madrone, Pacific Madrone | 3 | 2 |
| Arbutus unedo | Strawberry Tree | 4 | 2 |
| Argemone mexicana | Prickly Poppy, Mexican pricklypoppy | 1 | 3 |
| Aristolochia clematitis | Birthwort | 0 | 2 |
| Artemisia abrotanum | Southernwood | 1 | 3 |
| Artemisia annua | Qing Hao, Sweet sagewort | 1 | 4 |
| Artemisia argyi | | 0 | 2 |
| Artemisia campestris glutinosa | | 0 | 0 |
| Artemisia capillaris | Yin Chen Hao | 1 | 3 |
| Artemisia dracunculus | Tarragon, French Tarragon | 4 | 2 |
| Artemisia indica | | 1 | 3 |
| Artemisia maritima | Sea Wormwood | 1 | 2 |
| Artemisia scoparia | Redstem wormwood | 1 | 2 |
| Artemisia tridentata | Sage Brush, Big sagebrush, Bonneville big sagebrush | 3 | 2 |
| Artemisia umbelliformis | Alpine Wormwood | 1 | 0 |
| Artemisia vestita | Russian Wormwood | 0 | 1 |
| Arthropodium milleflorum | Pale Vanilla Lily | 3 | 0 |
| Arthropodium minus | Small Vanilla Lily | 2 | 0 |
| Arum dioscoridis | | 2 | 1 |
| Aruncus dioicus | Goat's Beard, Bride's feathers | 2 | 2 |
| Asarum arifolium | | 0 | 1 |
| Asarum canadense | Snake Root, Canadian wildginger, Canada Wild Ginger, Wild Ginger | 3 | 3 |
| Asarum caudatum | Wild Ginger, British Columbia wildginger | 3 | 2 |
| Asarum europaeum | Asarabacca, European Wild Ginger | 0 | 2 |
| Asarum reflexum | | 2 | 0 |
| Asarum shuttleworthii | Asarabacca, Mottled Wild Ginger | 2 | 0 |
| Asclepias quadrifolia | Fourleaf Milkweed | 2 | 2 |
| Asclepias syriaca | Common Milkweed, Silkweed, Milkweed | 3 | 2 |
| Asparagus stipularis | | 1 | 0 |
| Asphodeline lutea | King's Spear, Yellow Asphodel, Jacob's Rod | 4 | 0 |
| Asphodelus fistulosus | Onionweed | 2 | 1 |
| Aster puniceus | Purplestem Aster | 0 | 2 |
| Astragalus glycyphyllos | Milk Vetch, Licorice milkvetch | 1 | 0 |
| Astragalus gummifer | Tragacanth, Gum tragacanth milkvetch | 2 | 3 |
| Atherosperma moschatum | Black Sassafras | 2 | 2 |
| Azara microphylla | | 1 | 0 |
| Babiana plicata | Baboon Root | 1 | 0 |
| Baccharis patagonica | | 0 | 0 |
| Backhousia myrtifolia | Grey Myrtle | 0 | 0 |
| Baeckea gunniana | | 1 | 0 |
| Ballota nigra | Black Horehound | 0 | 3 |
| Berberis verruculosa | | 2 | 2 |
| Betula alleghaniensis | Yellow Birch, Swamp Birch | 3 | 2 |
| Betula glandulosa | Scrub Birch | 2 | 1 |
| Betula lenta | Cherry Birch, Sweet birch, Black Birch, Cherry Birch | 3 | 3 |
| Betula pendula | Silver Birch, European white birch, Common Birch, Warty Birch, European White Birch | 3 | 3 |
| Betula pubescens | White Birch, Downy birch | 3 | 3 |
| Bidens tripartita | Burr Marigold, Threelobe beggarticks | 2 | 2 |
| Billardiera longiflora | Appleberry | 2 | 0 |
| Boenninghausenia albiflora | | 0 | 2 |
| Boronia pinnata | Pinnate Boronia | 0 | 0 |
| Brachyglottis repanda | Bushman's Toilet Paper | 1 | 1 |
| Brassica nigra | Black Mustard | 3 | 3 |
| Buddleia asiatica | Bai Bei Feng | 1 | 1 |
| Buddleia davidii | Butterfly Bush, Summer Lilac, Butterflybush | 0 | 0 |
| Buddleia globosa | Orange Ball Tree | 0 | 1 |
| Buddleia officinalis | Mi Meng Hua | 0 | 2 |
| Bupleurum fruticosum | Shrubby Hare's Ear | 0 | 0 |
| Bursaria spinosa | Christmas Bush, Sweet Bursaria | 0 | 2 |
| Butomus umbellatus | Flowering Rush | 3 | 0 |
| Buxus balearica | | 0 | 0 |
| Buxus harlandii | Japanese Box | 0 | 0 |
| Buxus microphylla | Littleleaf boxwood , Littleleaf Boxwood | 0 | 0 |
| Buxus sempervirens | Box, Common box, American Boxwood | 1 | 2 |
| Buxus wallichiana | | 0 | 1 |
| Calamintha grandiflora | Large-Flowered Calamint | 2 | 2 |
| Calendula officinalis | calendula, Pot Marigold | 3 | 5 |
| Callistemon citrinus | Crimson Bottlebrush, Red Bottlebrush, Lemon Bottlebrush | 2 | 0 |
| Callitris endlicheri | Red Cypress-Pine | 0 | 1 |
| Calocedrus decurrens | Incense Cedar, California Incense Cedar | 1 | 1 |
| Calochortus pulchellus | Mount Diablo Globelily, Mt. diablo fairy-lantern | 2 | 0 |
| Calochortus uniflorus | Large-Flowered Star Tulip, Monterey mariposa lily | 1 | 0 |
| Calycanthus floridus | Carolina Allspice, Eastern sweetshrub, Strawberry Bush, Sweetshrub, Carolina Allspice | 3 | 2 |
| Calycanthus floridus glaucus | Eastern Sweetshrub | 2 | 1 |
| Calycanthus occidentalis | Californian Allspice, Western sweetshrub | 3 | 1 |
| Camellia sasanqua | Camellia, Sasanqua camellia | 3 | 1 |
| Camellia sinensis | Tea Plant, Assam tea, Tea Tree Camellia | 4 | 4 |
| Camellia sinensis assamica | Tea Plant, Assam Tea | 4 | 4 |
| Camphorosma monspeliaca | | 0 | 1 |
| Cananga odorata | Ylang Ylang, Perfume Tree | 2 | 3 |
| Cantleya corniculata | Daru | 1 | 0 |
| Capparis spinosa | Caper,Common Caper, Caper Bush | 2 | 3 |
| Caragana sinica | Chinese Pea Shrub | 1 | 2 |
| Cardiocrinum cordatum | | 2 | 0 |
| Cardiocrinum giganteum | | 0 | 1 |
| Carduus nutans | Musk Thistle, Nodding plumeless thistle | 2 | 2 |
| Carum carvi | Caraway | 4 | 3 |
| Carya ovalis | Sweet Pignut | 3 | 0 |
| Carya ovata | Shagbark Hickory | 3 | 1 |
| Cassinia fulvida | | 0 | 0 |
| Castanopsis cuspidata | Japanese Chinquapin | 2 | 0 |
| Castanopsis delavayi | | 2 | 0 |
| Castanopsis hystrix | | 2 | 0 |
| Castanopsis orthacantha | | 2 | 0 |
| Castanopsis sclerophylla | | 2 | 1 |
| Castanopsis tibetana | | 2 | 0 |
| Castanospermum australe | Moreton Bay Chestnut | 4 | 1 |
| Catalpa bignonioides | Indian Bean Tree, Southern catalpa | 0 | 2 |
| Catalpa ovata | Chinese Catalpa | 1 | 1 |
| Ceanothus velutinus | Sticky Laurel, Snowbrush ceanothus, Hooker's ceanothus | 2 | 2 |
| Cedronella canariensis | Balm Of Gilead, Herb of gilead | 2 | 0 |
| Cedrus atlantica | Atlas Deodar, Atlantic cedar | 0 | 2 |
| Cedrus deodara | Deodar, Deodar cedar | 0 | 2 |
| Cedrus libani | Cedar Of Lebanon | 1 | 1 |
| Centaurium erythraea | Centaury - Feverwort, European centaury | 1 | 3 |
| Centranthus ruber | Red Valerian, Fox's Brush, Jupiter's Beard | 2 | 1 |
| Cephalanthus occidentalis | Button Bush, Common buttonbush, Button Willow, Honey Bells, Buttonbush | 0 | 2 |
| Cercidiphyllum japonicum | Katsura Tree | 0 | 0 |
| Chamaecyparis lawsoniana | Lawson Cypress, Port orford cedar, Oregon Cedar, Port Orford Cedar, Lawson's Cypress | 0 | 1 |
| Chamaecyparis nootkatensis | Nootka Cypress, Nootka Cypress, Yellow Cypress, Alaska Cedar | 0 | 1 |
| Chamaecyparis thyoides | White Cypress, Atlantic white cedar, Coast White Cedar, Southern White Cedar, White Cypress | 0 | 1 |
| Chamaedaphne calyculata | Leather Leaf | 1 | 1 |
| Chamaemelum nobile | Chamomile, Roman chamomile | 2 | 5 |
| Cheilanthes pteridioides | Ressurection Fern | 1 | 0 |
| Chenopodium ambrosioides | Mexican Tea | 2 | 3 |
| Chenopodium ambrosioides anthelminticum | Wormseed | 2 | 3 |
| Chenopodium botrys | Jerusalem Oak, Jerusalem oak goosefoot | 2 | 2 |
| Chenopodium vulvaria | Stinking Goosefoot. Arrach - Wormseed | 2 | 1 |
| Chimaphila maculata | Spotted Wintergreen, Striped prince's pine, Pipsissewa | 1 | 3 |
| Chimaphila umbellata | Pipsissewa | 2 | 3 |
| Chimonanthus praecox | Winter Sweet | 2 | 1 |
| Chionanthus virginicus | Fringe Tree, White fringetree, Old Man's Beard, Fringe Tree | 1 | 3 |
| Choisya ternata | Mexican Orange Flower | 0 | 0 |
| Chrysolepis chrysophylla | Golden Chinquapin, Giant chinquapin | 2 | 0 |
| Chrysothamnus graveolens | Rubber Rabbitbrush | 0 | 0 |
| Chrysothamnus viscidiflorus | Green Rabbitbrush, Yellow rabbitbrush | 2 | 1 |
| Cimicifuga dahurica | Xing An Sheng Ma | 1 | 3 |
| Cimicifuga foetida | Foetid Bugbane | 1 | 3 |
| Cimicifuga simplex | | 1 | 0 |
| Cinnamomum camphora | Camphor, Camphortree | 2 | 3 |
| Cistus creticus | Rock Rose, Cretan rockrose | 2 | 2 |
| Cistus ladanifer | Labdanum, Common gum cistus | 2 | 2 |
| Citrus aurantium | Bitter Orange, Sour orange, Bergamot orange | 3 | 3 |
| Citrus hystrix | Kaffir Lime | 3 | 2 |
| Citrus ichangensis | Ichang Papeda | 2 | 2 |
| Citrus latifolia | Citrus Tahitian Lime | 4 | 2 |
| Citrus limon | Lemon | 4 | 5 |
| Citrus reticulata | Mandarin, Tangerine, Unshu orange, Satsuma Orange,Temple Orange, Tangerine | 3 | 3 |
| Citrus sinensis | Sweet Orange | 4 | 3 |
| Citrus x meyeri | Lemon | 3 | 5 |
| Cladrastis lutea | Yellow Wood, Virgilia, American Yellow Wood | 0 | 0 |
| Clematis flammula | Fragrant Virgin's Bower, Fragrant clematis | 1 | 0 |
| Clematis orientalis | Oriental virginsbower | 0 | 1 |
| Clematis trichotoma | | 1 | 0 |
| Clematis vitalba | Traveller's Joy, Evergreen clematis | 1 | 2 |
| Clerodendrum bungei | Glory Flower, Rose glorybower, Cashmere Bouquet, Mexican Hydrangea, Glory Bower | 0 | 1 |
| Clerodendrum trichotomum | Chou Wu Tong, Harlequin glorybower, Ferruginous clerodendrum, Harlequin Glory Bower | 1 | 3 |
| Clethra alnifolia | Sweet Pepper Bush, Coastal sweetpepperbush, Summer Sweet | 0 | 0 |
| Clethra barbinervis | | 1 | 0 |
| Clinopodium umbrosum | | 0 | 1 |
| Codonopsis ovata | | 2 | 1 |
| Colletia armata | | 0 | 0 |
| Colletia paradoxa | | 0 | 0 |
| Collinsonia canadensis | Stone Root - Horse Balm, Richweed | 0 | 3 |
| Coluria geoides | | 2 | 0 |
| Commiphora myrrha | Myrrh, Myrrh Gum | 2 | 4 |
| Commiphora wightii | Guggul, Indian bdellium-tree | 2 | 3 |
| Comptonia peregrina | Sweet Fern | 3 | 3 |
| Comptonia peregrina asplenifolia | Sweet Fern | 3 | 3 |
| Conium maculatum | Hemlock, Poison hemlock | 1 | 2 |
| Convallaria majalis | Lily Of The Valley, European lily of the valley | 1 | 3 |
| Convolvulus arvensis | Field Bindweed | 1 | 2 |
| Convolvulus erubescens | Australian Bindweed, Pinkflower bindweed | 0 | 1 |
| Conyza canadensis | Canada Fleabane, Canadian horseweed | 1 | 3 |
| Coprosma foetidissima | | 1 | 0 |
| Cordyline australis | Cabbage Tree | 3 | 0 |
| Coriandrum sativum | Coriander - Dhania - Cilantro, Coriander | 4 | 4 |
| Cornus macrophylla | Large-Leaf Dogwood | 2 | 2 |
| Cornus sanguinea | Dogwood, Bloodtwig dogwood | 2 | 1 |
| Coronilla emerus | Scorpion Senna | 0 | 1 |
| Corrigiola littoralis | Strapwort | 1 | 1 |
| Cotinus coggygria | Smoke Tree, European smoketree, Venetian Sumac, Wig Tree, Smoke Tree | 1 | 1 |
| Cotinus obovatus | Chittamwood, American smoketree | 0 | 0 |
| Cotoneaster acuminatus | Acuminate cotoneaster | 0 | 0 |
| Cotoneaster bacillaris | | 0 | 1 |
| Cotoneaster conspicuus | Tibetan Cotoneaster, Cotoneaster | 0 | 0 |
| Cotoneaster coriaceus | | 0 | 0 |
| Cotoneaster divaricatus | Spreading Cotoneaster | 0 | 0 |
| Cotoneaster franchetii | Orange cotoneaster | 1 | 0 |
| Cotoneaster frigidus | | 0 | 1 |
| Cotoneaster glaucophyllus | | 0 | 0 |
| Cotoneaster microphyllus | | 2 | 1 |
| Cotoneaster racemiflorus | Black-Wood, Cotoneaster | 2 | 1 |
| Cotoneaster serotinus | | 0 | 0 |
| Cotoneaster simonsii | Simons' cotoneaster | 0 | 0 |
| Cotoneaster wardii | | 0 | 0 |
| Cotoneaster x watereri | | 0 | 0 |
| Cotula coronopifolia | Brass Buttons, Common brassbuttons | 0 | 0 |
| Crambe cordifolia | Flowering sea kale | 3 | 1 |
| Crataegus acclivis | | 4 | 2 |
| Crataegus aestivalis | Eastern Mayhaw, May hawthorn, Mayhaw, Apple Hawthorn | 3 | 2 |
| Crataegus altaica | Altai Mountain Thorn | 3 | 2 |
| Crataegus anomala | Arnold hawthorn | 3 | 2 |
| Crataegus apiifolia | Parsley-Leaved Hawthorn | 2 | 2 |
| Crataegus aprica | Sunny Hawthorn | 3 | 2 |
| Crataegus armena | | 2 | 2 |
| Crataegus arnoldiana | Arnold Hawthorn | 5 | 2 |
| Crataegus atrosanguinea | | 3 | 2 |
| Crataegus azarolus | Azarole | 4 | 2 |
| Crataegus baroussana | Tejocote | 4 | 2 |
| Crataegus caesa | | 4 | 2 |
| Crataegus calpodendron | Pear Hawthorn | 3 | 2 |
| Crataegus canadensis | Canadian hawthorn | 2 | 2 |
| Crataegus canbyi | Cockspur hawthorn, Dwarf Hawthorn, Cockspur Hawthorn | 2 | 2 |
| Crataegus champlainensis | Quebec hawthorn | 4 | 2 |
| Crataegus chlorosarca | | 3 | 2 |
| Crataegus chrysocarpa | Fireberry Hawthorn, Red haw, Piper's hawthorn, | 3 | 2 |
| Crataegus coccinoides | Kansas Hawthorn | 3 | 2 |
| Crataegus columbiana | Columbian Hawthorn | 3 | 2 |
| Crataegus crus-galli | Cockspur Thorn, Cockspur hawthorn, Dwarf Hawthorn | 2 | 2 |
| Crataegus cuneata | Sanzashi, Chinese hawthorn | 3 | 3 |
| Crataegus dilatata | Broadleaf hawthorn | 3 | 2 |
| Crataegus dispessa | Mink hawthorn | 3 | 2 |
| Crataegus douglasii | Black Hawthorn | 4 | 2 |
| Crataegus durobrivensis | Caughuawaga Hawthorn | 4 | 2 |
| Crataegus ellwangeriana | Scarlet Hawthorn | 5 | 2 |
| Crataegus elongata | | 4 | 2 |
| Crataegus festiva | | 5 | 2 |
| Crataegus flabellata | Fanleaf hawthorn | 3 | 2 |
| Crataegus flava | Summer Haw, Yellowleaf hawthorn | 3 | 2 |
| Crataegus gemosa | Haw | 3 | 2 |
| Crataegus heterophylla | | 2 | 2 |
| Crataegus holmesiana | Holmes' hawthorn | 4 | 2 |
| Crataegus hupehensis | | 3 | 2 |
| Crataegus illinoiensis | | 4 | 2 |
| Crataegus intricata | Copenhagen hawthorn | 3 | 2 |
| Crataegus jackii | | 2 | 2 |
| Crataegus jonesiae | Miss jones' hawthorn | 2 | 2 |
| Crataegus laciniata | | 4 | 2 |
| Crataegus laevigata | Midland Hawthorn, Smooth hawthorn, English Hawthorn | 3 | 5 |
| Crataegus lobulata | Red Haw | 2 | 2 |
| Crataegus macrosperma | Big-Fruit Hawthorn | 3 | 2 |
| Crataegus maximowiczii | | 2 | 2 |
| Crataegus meyeri | | 3 | 2 |
| Crataegus missouriensis | | 5 | 2 |
| Crataegus mollis | Red Haw, Downy hawthorn | 4 | 2 |
| Crataegus monogyna | Hawthorn, Oneseed hawthorn | 3 | 5 |
| Crataegus nigra | Hungarian Hawthorn | 2 | 2 |
| Crataegus opaca | Western Mayhaw | 3 | 2 |
| Crataegus parvifolia | | 2 | 2 |
| Crataegus pedicellata | Scarlet Haw, Scarlet hawthorn | 5 | 2 |
| Crataegus pedicellata gloriosa | Scarlet Haw | 3 | 2 |
| Crataegus pentagyna | | 3 | 2 |
| Crataegus phaenopyrum | Washington Thorn, Washington Hawthorn | 2 | 2 |
| Crataegus pinnatifida | Chinese Haw | 3 | 3 |
| Crataegus pinnatifida major | Chinese Haw | 4 | 3 |
| Crataegus pontica | Turkish Haw | 4 | 2 |
| Crataegus pringlei | Pringle's hawthorn | 2 | 2 |
| Crataegus pruinosa | Frosted Hawthorn, Waxyfruit hawthorn | 3 | 2 |
| Crataegus pubescens | Manzanilla | 3 | 2 |
| Crataegus pubescens stipulacea | Manzanilla | 3 | 2 |
| Crataegus punctata | Dotted Hawthorn, | 3 | 2 |
| Crataegus reverchonii | Reverchon's Hawthorn | 2 | 2 |
| Crataegus rivularis | River Hawthorn | 2 | 2 |
| Crataegus rotundifolia | | 3 | 2 |
| Crataegus sanguinea | | 2 | 2 |
| Crataegus songorica | | 3 | 2 |
| Crataegus stipulosa | | 2 | 2 |
| Crataegus submollis | Quebec Hawthorn | 4 | 2 |
| Crataegus subvillosa | | 2 | 2 |
| Crataegus succulenta | Fleshy hawthorn | 4 | 2 |
| Crataegus szovitskii | | 3 | 2 |
| Crataegus tanacetifolia | Tansy-Leaved Thorn | 5 | 2 |
| Crataegus uniflora | Dwarf hawthorn | 2 | 2 |
| Crataegus x grignonensis | | 3 | 2 |
| Crinum asiaticum | Asian Poison Bulb | 0 | 1 |
| Crinum bulbispermum | Hardy swamplily | 1 | 0 |
| Crithmum maritimum | Rock Samphire | 2 | 2 |
| Crocosmia aurea | Montbretia | 1 | 0 |
| Crocus sativus | Saffron | 3 | 3 |
| Cruciata laevipes | Crosswort, Smooth bedstraw | 2 | 2 |
| Cuminum cyminum | Cumin - Jeera | 4 | 3 |
| Cunila origanoides | Stone Mint, Common dittany | 2 | 2 |
| Cunninghamia lanceolata | Chinese Fir | 0 | 2 |
| Cupressocyparis leylandii | Leyland Cypress | 0 | 0 |
| Cupressus funebris | Chinese Weeping Cypress, Mourning-cypress | 0 | 1 |
| Cupressus macrocarpa | Monterey Cypress | 0 | 1 |
| Cupressus sempervirens | Italian Cypress | 0 | 2 |
| Cupressus torulosa | Himalayan Cypress | 0 | 0 |
| Cyanella capensis | Lady's Hand | 1 | 0 |
| Cyathodes colensoi | | 2 | 0 |
| Cynoglossum officinale | Hound's Tongue, Gypsyflower | 1 | 2 |
| Cyperus articulatus | Jointed flatsedge, Priprioca, Piripiri | 1 | 4 |
| Cyperus longus | Galingale | 2 | 1 |
| Cyperus rotundus | Nut Grass | 3 | 3 |
| Cyphomandra betacea | Tree Tomato | 3 | 0 |
| Cyphomandra casana | Casana | 3 | 0 |
| Cyphomandra fragrans | | 3 | 0 |
| Cyphomandra hartwegii | Hartweg's cyphomandra,Calylophus | 3 | 0 |
| Cypripedium calceolus parviflorum | Nerve Root | 0 | 3 |
| Cypripedium calceolus pubescens | Nerve Root | 0 | 3 |
| Cytisus scoparius | Broom, Scotch broom, Common Broom | 1 | 3 |
| Daphne bholua | | 0 | 1 |
| Daphne gnidium | Flax-Leaved Daphne | 0 | 1 |
| Daphne laureola | Spurge Laurel | 0 | 1 |
| Daphne mezereum | Mezereon, Paradise plant, February Daphne | 0 | 2 |
| Daphne odora | Winter Daphne, Fragrant Daphne | 0 | 2 |
| Daphne oleoides | | 1 | 1 |
| Daphne papyracea | | 0 | 1 |
| Daphniphyllum himalense | | 1 | 1 |
| Daphniphyllum macropodum | | 1 | 0 |
| Datura metel | Thorn Apple, Angel's Trumpet, Hindu Datura, Horn of Plenty, Downy Thorn Apple | 1 | 3 |
| Datura stramonium | Thorn Apple, Jimsonweed, Jamestown Weed | 0 | 4 |
| Daucus carota | Wild Carrot, Queen anne's lace, Carrot, Wild Carrot, Queen Anne's Lace | 2 | 3 |
| Daucus carota sativus | Carrot | 5 | 3 |
| Delphinium brunonianum | | 0 | 0 |
| Dendranthema indicum | Chrysanthemum | 2 | 3 |
| Dendranthema lavandulifolium | | 2 | 2 |
| Dendranthema nubigenum | | 0 | 0 |
| Desfontainia spinosa | Taique | 0 | 1 |
| Dianthus barbatus | Sweet William | 1 | 0 |
| Dianthus caryophyllus | Carnation, Clove Pink, Border Carnation | 2 | 2 |
| Dianthus gratianopolitanus | Cheddar Pink | 0 | 0 |
| Dianthus plumarius | Pink, Feathered pink, Cottage Pink | 1 | 0 |
| Dianthus superbus | Fringed Pink | 2 | 3 |
| Dichopogon fimbriatus | Chocolate Lily | 3 | 0 |
| Dichopogon strictus | Chocolate Lily | 3 | 0 |
| Dictamnus albus | Burning Bush, Gasplant, White Dittany, | 2 | 3 |
| Dioscorea batatas | Chinese Yam | 5 | 5 |
| Dirca palustris | Leather Wood, Eastern leatherwood | 0 | 2 |
| Dracocephalum moldavica | Moldavian Balm, Moldavian dragonhead | 1 | 1 |
| Drimys lanceolata | Mountain Pepper | 3 | 1 |
| Drimys winteri | Winter's Bark | 3 | 2 |
| Edgeworthia chrysantha | Oriental paperbush | 0 | 1 |
| Edgeworthia gardneri | Nepalese Paper Bush | 0 | 0 |
| Edgeworthia papyrifera | Paperbush, Oriental Paperbush | 1 | 0 |
| Ehretia acuminata | Koda Tree | 2 | 1 |
| Ehretia dicksonii | | 2 | 0 |
| Ehretia ovalifolia | | 2 | 0 |
| Elaeagnus angustifolia | Oleaster, Russian olive | 4 | 2 |
| Elaeagnus commutata | Silverberry | 3 | 2 |
| Elaeagnus cordifolia | | 5 | 2 |
| Elaeagnus glabra | Goat nipple | 4 | 2 |
| Elaeagnus macrophylla | Broad-leaved Oleaster | 5 | 2 |
| Elaeagnus multiflora | Goumi, Cherry silverberry | 5 | 2 |
| Elaeagnus multiflora ovata | Goumi | 5 | 2 |
| Elaeagnus parvifolia | Autumn olive | 4 | 2 |
| Elaeagnus pungens | Elaeagnus, Thorny olive, Thorny Elaeagnus, Oleaster, Silverberry, Silverthorn, Pungent Elaeagnus | 5 | 2 |
| Elaeagnus umbellata | Autumn Olive | 4 | 2 |
| Elaeagnus x ebbingei | Elaeagnus, Ebbing's Silverberry | 5 | 2 |
| Elaeagnus x reflexa | | 3 | 2 |
| Eleutherococcus trifoliatus | | 1 | 1 |
| Epigaea asiatica | | 1 | 0 |
| Epigaea repens | Mayflower, Trailing arbutus, Ground Laurel | 2 | 2 |
| Epilobium hirsutum | Codlins And Cream | 2 | 1 |
| Eremurus olgae | | 0 | 0 |
| Erigeron glaucus | Beach Aster, Seaside fleabane | 0 | 0 |
| Eriobotrya japonica | Loquat, Japanese Loquat | 4 | 3 |
| Eriodictyon californicum | Yerba Santa, California yerba santa | 2 | 3 |
| Erodium moschatum | Musk Storksbill | 2 | 1 |
| Eryngium maritimum | Sea Holly, Seaside eryngo | 3 | 3 |
| Erysimum cheiri | Wallflower, Aegean wallflower | 0 | 2 |
| Escallonia rubra macrantha | Escallonia | 0 | 0 |
| Eucalyptus camaldulensis | Red River Gum, Murray Red Gum, River Red Eucalyptus | 1 | 3 |
| Eucalyptus citriodora | Lemon-Scented Gum, Lemon Scented Eucalyptus | 1 | 3 |
| Eucalyptus coccifera | Mt. Wellington Peppermint | 0 | 0 |
| Eucalyptus dumosa | Water Mallee | 1 | 0 |
| Eucalyptus globulus | Tasmanian Blue Gum, Eurabbie, Blue Gum, Blue Eucalyptus | 1 | 4 |
| Eucalyptus grandis | Flooded Gum, Gum, Rose Eucalyptus | 0 | 2 |
| Eucalyptus gunnii | Cider Gum | 3 | 3 |
| Eucalyptus largiflorens | Black Box | 1 | 0 |
| Eucalyptus macrorhyncha | Red Stringybark | 1 | 3 |
| Eucalyptus pauciflora niphophila | Snow Gum | 0 | 3 |
| Eucalyptus perriniana | Spinning Gum | 0 | 0 |
| Eucalyptus piperita | Sydney Peppermint | 0 | 2 |
| Eucalyptus polybractea | Blue Mallee | 1 | 3 |
| Eucalyptus robusta | Swamp Mahogany, Eucalyptus Gum | 0 | 3 |
| Eucalyptus viminalis | Manna Gum | 3 | 2 |
| Eucryphia lucida | Leatherwood | 0 | 1 |
| Eucryphia x nymansensis | | 0 | 0 |
| Euodia fraxinifolia | | 2 | 1 |
| Eupatorium cannabinum | Hemp Agrimony | 0 | 3 |
| Fagopyrum esculentum | Buckwheat | 4 | 3 |
| Fagraea fragrans | Ironwood, Tembusu | 0 | 2 |
| Ferula assa-foetida | Asafoetida - Devil's Dung. Hing (Indian), Asafetida | 3 | 3 |
| Ferula communis | Giant Fennel | 1 | 1 |
| Ferula conocaula | | 0 | 2 |
| Ferula foetida | Asafoetida | 2 | 3 |
| Ferula gummosa | Galbanum | 2 | 2 |
| Ferula narthex | Ferula | 2 | 2 |
| Filipendula kamtschatica | | 2 | 0 |
| Filipendula ulmaria | Meadowsweet, Queen of the meadow, Double Lady of the Meadow, European Meadowsweet | 3 | 3 |
| Filipendula vulgaris | Dropwort, Meadowsweet | 2 | 1 |
| Foeniculum vulgare | Fennel, Sweet fennel | 5 | 3 |
| Foeniculum vulgare azoricum | Florence Fennel | 3 | 3 |
| Foeniculum vulgare dulce | Sweet Fennel | 4 | 3 |
| Fortunella japonica | Round Kumquat | 3 | 1 |
| Fraxinus ornus | Manna Ash, Flowering ash | 3 | 3 |
| Fritillaria camschatcensis | Kamchatka Lily, Kamchatka fritillary | 4 | 0 |
| Fritillaria imperialis | Crown Imperial, Imperial fritillary, Crown Imperial Fritillary | 2 | 1 |
| Galium odoratum | Sweet Woodruff, Sweetscented bedstraw, Bedstraw | 3 | 3 |
| Gastrodia cunninghamii | | 2 | 0 |
| Gaultheria fragrantissima | Fragrant Wintergreen | 2 | 2 |
| Gaultheria nummularioides | | 2 | 0 |
| Gaultheria procumbens | Checkerberry, Eastern teaberry, Teaberry, Creeping Wintergreen | 4 | 3 |
| Gaultheria pyroloides | | 3 | 0 |
| Gaultheria trichophylla | | 2 | 0 |
| Geitonoplesium cymosum | Scrambling Lily | 2 | 0 |
| Gelsemium sempervirens | False Jasmine, Yellow Jessamine, Evening Trumpetflower, Carolina Jasmine | 0 | 4 |
| Genista hispanica | Spanish Gorse | 0 | 1 |
| Gentiana pannonica | | 1 | 3 |
| Geranium macrorrhizum | Bigroot Geranium | 0 | 1 |
| Geranium robertianum | Herb Robert, Robert geranium | 0 | 2 |
| Geum rivale | Water Avens, Purple avens | 3 | 2 |
| Geum triflorum | Purple Avens, Old man's whiskers, Prairie Smoke | 2 | 2 |
| Geum urbanum | Wood Avens, Bennet's Root - Old man's whiskers, Herb bennet | 3 | 3 |
| Ginkgo biloba | Maidenhair Tree, Ginkgo | 5 | 5 |
| Gleditsia macracantha | | 0 | 1 |
| Gleditsia triacanthos | Honey Locust | 3 | 2 |
| Glycyrrhiza glabra | Liquorice, Cultivated licorice | 4 | 4 |
| Gutierrezia sarothrae | Broomweed, Broom snakeweed | 0 | 2 |
| Gymnadenia conopsea | Fragrant Orchid | 2 | 2 |
| Halesia carolina | Silver-Bell Tree, Carolina silverbell, Mountain silverbell | 1 | 0 |
| Halimodendron halodendron | Salt Tree, Common salttree | 0 | 0 |
| Hamamelis virginiana | Witch Hazel, American witchhazel, Common Witchhazel, Virginian Witchhazel, Witchhazel | 1 | 5 |
| Hedeoma pulegioides | American Pennyroyal, American false pennyroyal | 3 | 3 |
| Hedychium coronarium | Butterfly Ginger, White garland-lily, Garland Flower, Butterfly Lily | 2 | 2 |
| Hedychium gracile | | 1 | 0 |
| Hedychium spicatum | | 1 | 2 |
| Helenium amarum | Bitter Sneezeweed, Sneezeweed | 0 | 1 |
| Helichrysum italicum | Curry Plant | 2 | 0 |
| Helichrysum orientale | | 0 | 0 |
| Helichrysum stoechas | | 0 | 1 |
| Heliotropium arborescens | Heliotrope, Garden heliotrope, Cherry Pie, Heliotrope | 0 | 1 |
| Helleborus foetidus | Stinking Hellebore, Setterwort, Bear's Foot, Bearsfoot, Setterwort, Stinkwort, Stinking Hellebore | 0 | 2 |
| Hemerocallis citrina | Citron daylily | 4 | 1 |
| Hemerocallis dumortieri | Dumortier's daylily | 4 | 1 |
| Hemerocallis lilioasphodelus | Yellow Day Lily | 4 | 2 |
| Hemerocallis minor | Grassleaf Day Lily, Small daylily | 4 | 1 |
| Herniaria glabra | Rupture Wort, Smooth rupturewort | 0 | 2 |
| Hesperantha baurii | | 1 | 0 |
| Hesperis matronalis | Sweet Rocket, Dames rocket, | 2 | 1 |
| Hesperocallis undulata | Desert Lily | 1 | 0 |
| Hierochloe odorata | Holy Grass | 2 | 2 |
| Holboellia angustifolia | | 2 | 1 |
| Holboellia coriacea | Sausage Vine | 2 | 0 |
| Holboellia grandiflora | | 2 | 0 |
| Holboellia latifolia | | 3 | 0 |
| Holodiscus discolor | Creambush, Oceanspray | 1 | 2 |
| Hosta plantaginae | August Lily | 1 | 1 |
| Hottonia palustris | Water Violet | 0 | 1 |
| Houttuynia cordata | Tsi, Chameleon, Rainbow Plant, Chameleon Plant | 4 | 3 |
| Hovenia dulcis | Japanese Raisin Tree | 3 | 2 |
| Humulus japonicus | Japanese Hop | 2 | 1 |
| Humulus lupulus | Hop, Common hop, European Hop, | 4 | 5 |
| Hyacinthoides nonscripta | Bluebell | 0 | 1 |
| Hyacinthus orientalis | Hyacinth, Garden hyacinth | 0 | 0 |
| Hydrangea arborescens | Seven Barks, Wild hydrangea, Ashy Hydrangea, Snowhill Hydrangea, Smooth Hydrangea | 1 | 3 |
| Hydrocotyle sibthorpioides | Water Pennywort, Lawn marshpennywort | 1 | 2 |
| Hyoscyamus niger | Henbane, Black henbane | 0 | 4 |
| Hypericum androsaemum | Tutsan, Sweet-amber, St. Johnswort | 0 | 1 |
| Hypericum perforatum | St. John's Wort, Common St. Johnswort | 2 | 4 |
| Hyssopus officinalis | Hyssop | 2 | 3 |
| Iberis amara | Rocket Candytuft, Annual candytuft | 1 | 2 |
| Idesia polycarpa | Idesia | 1 | 0 |
| Ilex aquifolium | Holly, English holl, Christmas Holly, Common Holly, English Holly | 2 | 2 |
| Illicium anisatum | Star Anise, Chinese Anise,Japanese Anise | 1 | 2 |
| Illicium floridanum | Aniseed Tree, Florida anisetree, Purple Anise, Star Anise, Florida anise | 1 | 0 |
| Illicium verum | Ba Jiao Hui Xian, Staranise tree | 3 | 3 |
| Indigofera decora | Chinese indigo | 2 | 1 |
| Indigofera heterantha | Indigo Bush | 1 | 0 |
| Inula conyza | Ploughman's Spikenard | 0 | 1 |
| Inula helenium | Elecampane, Elecampane inula | 3 | 3 |
| Ipomoea alba | Moonflower, Tropical white morning-glory | 2 | 1 |
| Ipomopsis aggregata | Skyrocket, Scarlet gilia | 1 | 2 |
| Iris foetidissima | Stinking Gladwin, Stinking iris, Gladwin Iris | 0 | 2 |
| Iris germanica | Purple Flag, German iris, Orris-root, Tall Bearded German Iris, Bearded Iris | 1 | 3 |
| Iris germanica florentina | Orris, Orris-root | 1 | 3 |
| Iris pallida | Dalmation Iris, Sweet iris, Fragrant Iris, Zebra Iris | 2 | 1 |
| Iris pseudacorus | Yellow Flag, Paleyellow iris | 1 | 2 |
| Jasminum grandiflorum | Jasmin | 3 | 3 |
| Jasminum humile | Yellow Jasmine | 1 | 1 |
| Jasminum nudiflorum | Winter-Flowering Jasmin, Winter jasmine | 0 | 1 |
| Jasminum odoratissimum | | 1 | 0 |
| Jasminum officinale | Jessamine, Poet's jasmine | 2 | 2 |
| Jasminum sambac | Jasmine Tea | 3 | 3 |
| Juglans nigra | Black Walnut | 3 | 3 |
| Juglans regia | Walnut, English walnut, Persian Walnut, | 4 | 3 |
| Juniperus chinensis | Chinese Juniper, Sargent juniper | 0 | 2 |
| Juniperus communis | Juniper, Common juniper | 3 | 3 |
| Juniperus excelsa | Grecian Juniper | 2 | 1 |
| Juniperus sabina | Savine, Tam Juniper | 0 | 2 |
| Juniperus silicicola | Southern Redcedar, Juniper, Southern Red Cedar | 2 | 2 |
| Juniperus virginiana | Pencil Cedar, Eastern redcedar, Southern redcedar, Silver Cedar, Burk Eastern Red Cedar, Silver East | 2 | 2 |
| Kadsura japonica | | 2 | 1 |
| Laburnum alpinum | Scotch Laburnum, Alpine Bea Tree, Alpine Golden Chain Tree | 0 | 1 |
| Laburnum anagyroides | Laburnum, Golden chain tree | 0 | 1 |
| Lagenaria siceraria | Bottle Gourd | 3 | 2 |
| Lantana camara | Wild Sage, Lantana Verbena | 2 | 4 |
| Larix decidua | Larch, European Larch, Common Larch | 2 | 3 |
| Larrea tridentata | Creosote Bush - Chaparral | 2 | 2 |
| Laser trilobum | Gladich | 2 | 0 |
| Lathyrus odoratus | Sweet Pea, Wild Pea,Vetchling | 1 | 0 |
| Laurelia novae-zealandiae | Pukatea | 0 | 1 |
| Laurelia sempervirens | Chilean Laurel | 2 | 1 |
| Laurus nobilis | Bay Tree, Sweet bay, Grecian Laurel, True Laurel, | 3 | 3 |
| Lavandula angustifolia | English Lavender, True Lavender | 2 | 3 |
| Lavandula dentata | | 0 | 1 |
| Lavandula latifolia | Spike Lavender, Broadleaved lavender | 2 | 2 |
| Lavandula stoechas | French Lavender | 0 | 2 |
| Lavandula x intermedia | Lavender, Lavandin | 2 | 2 |
| Lawsonia inermis | Henna, Mignonette Tree | 0 | 3 |
| Ledum columbianum | Labrador tea | 2 | 1 |
| Ledum glandulosum | Labrador Tea, Western Labrador tea | 2 | 1 |
| Ledum groenlandicum | Labrador Tea, Bog Labrador tea | 2 | 3 |
| Ledum palustre | Wild Rosemary, Marsh Labrador tea | 2 | 3 |
| Leonurus cardiaca | Motherwort, Common motherwort | 2 | 3 |
| Leonurus sibiricus | Chinese Motherwort, Honeyweed | 2 | 3 |
| Leptospermum ericoides | | 1 | 1 |
| Leptospermum liversidgei | Lemon-Scented Tea Tree | 2 | 1 |
| Leptospermum petersonii | Lemon Tea Tree, Common teatree | 1 | 1 |
| Leptospermum scoparium | Tea Tree, Broom teatree, Manuka, New Zealand Tea Tree | 3 | 0 |
| Leucanthemum vulgare | Ox-Eye Daisy, Marguerite | 2 | 2 |
| Leucojum vernum | Spring Snowflake | 0 | 0 |
| Leucothoe axillaris | Coastal Doghobble | 0 | 1 |
| Levisticum officinale | Lovage, Garden lovage | 3 | 3 |
| Leycesteria formosa | Himalayan Honeysuckle | 2 | 0 |
| Libocedrus bidwillii | | 0 | 0 |
| Ligusticum scoticum | Scottish Lovage, Scottish licorice-root, Hulten's licorice-root | 3 | 2 |
| Lilium amabile | | 2 | 0 |
| Lilium auratum | Golden-Rayed Lily | 3 | 0 |
| Lilium brownii | Hong Kong Lily | 3 | 2 |
| Lilium candidum | Madonna Lily | 3 | 2 |
| Lilium cernuum | | 2 | 0 |
| Lilium formosanum | Formosa lily | 2 | 0 |
| Lilium formosanum pricei | | 2 | 0 |
| Lilium hansonii | | 2 | 0 |
| Lilium henryi | Henry's lily | 2 | 0 |
| Lilium longiflorum | White Trumpet Lily, Easter lily, Trumpet Lily | 3 | 2 |
| Lilium martagon | Turk's Cap Lily, Martagon lily | 2 | 1 |
| Lilium nepalense | | 2 | 1 |
| Lilium nobilissimum | | 2 | 0 |
| Lilium pumilum | Coral Lily | 2 | 2 |
| Lilium rubellum | | 2 | 0 |
| Lilium sargentiae | | 2 | 0 |
| Lilium speciosum | Oriental Lily | 2 | 1 |
| Lilium wallichianum | | 2 | 1 |
| Limnanthes douglasii | Poached Egg Plant, Douglas' meadowfoam, Ornduff's meadowfoam | 0 | 0 |
| Lindera benzoin | Spice Bush, Northern spicebush, Bush Northern Spice | 3 | 3 |
| Lindera megaphylla | | 0 | 0 |
| Linnaea borealis | Twinflower, Longtube twinflower | 1 | 1 |
| Liquidambar orientalis | Oriental Sweet Gum | 2 | 3 |
| Liquidambar styraciflua | Sweet Gum, Red Gum, American Sweet Gum, Red Sweet Gum, | 2 | 3 |
| Litsea cubeba | Mountain Pepper, Litsea | 2 | 2 |
| Lobularia maritima | Sweet Alyssum | 1 | 1 |
| Lomandra longifolia | Longleaf Mat-Rush | 2 | 0 |
| Lonicera angustifolia | Narrow-leafed honeysuckle | 4 | 0 |
| Lonicera caprifolium | Italian Honeysuckle, Italian woodbine | 1 | 2 |
| Lonicera japonica | Japanese Honeysuckle | 2 | 3 |
| Lonicera periclymenum | Honeysuckle, European honeysuckle | 1 | 2 |
| Loropetalum chinense | Fringe Flower, Chinese Fringe Bush | 0 | 2 |
| Lotus corniculatus | Bird's Foot Trefoil | 1 | 1 |
| Luma apiculata | Arrayan | 3 | 0 |
| Lupinus arboreus | Tree Lupin, Yellow bush lupine | 0 | 0 |
| Lupinus luteus | Yellow Lupin, European yellow lupine | 3 | 0 |
| Lycopodium complanatum | Ground Pine, Groundcedar | 0 | 3 |
| Lycoris squamigera | Resurrection Lily, Hardy Amaryllis, Magic Lily, Autumn Lycoris, Naked Lady | 2 | 0 |
| Lysichiton americanus | Yellow Skunk Cabbage, American skunkcabbage | 3 | 2 |
| Lysichiton camtschatcense | | 1 | 0 |
| Lysimachia foenum-graecum | Ling Xiang Cao | 0 | 1 |
| Maackia amurensis | Chinese Yellow Wood, Amur maackia | 1 | 0 |
| Magnolia acuminata | Cucumber Tree, Cucumber Magnolia | 0 | 3 |
| Magnolia denudata | Lily Tree, Yulan Magnolia | 1 | 2 |
| Magnolia grandiflora | Southern Magnolia, Bull Bay, Large-flowered Magnolia, Southern Magnolia | 2 | 2 |
| Magnolia hypoleuca | Whitebark Magnolia | 2 | 2 |
| Magnolia kobus | Kobus magnolia, Northern Japanese Magnolia | 1 | 1 |
| Magnolia liliiflora | Mu-Lan, Woody Orchid, Lily Magnolia | 0 | 3 |
| Magnolia macrophylla | Bigleaf Magnolia | 0 | 1 |
| Magnolia stellata | Star Magnolia | 1 | 0 |
| Magnolia virginiana | Laurel Magnolia, Sweetbay | 1 | 3 |
| Mahonia aquifolium | Oregon Grape, Hollyleaved barberry, Oregon Holly Grape, Oregon Holly | 3 | 3 |
| Mahonia bealei | Beale's barberry, Leatherleaf Mahonia | 3 | 2 |
| Mahonia confusa | | 3 | 2 |
| Mahonia fortunei | Fortune's Mahonia | 3 | 2 |
| Mahonia fremontii | Mahonia, Fremont's mahonia | 3 | 2 |
| Mahonia haematocarpa | Mexican Barberry, Red barberry | 3 | 2 |
| Mahonia japonica | | 3 | 2 |
| Mahonia lomariifolia | Chinese hollygrape | 3 | 2 |
| Mahonia napaulensis | | 3 | 2 |
| Mahonia repens | Creeping Oregon Grape, Creeping barberry, Grape Oregon | 3 | 3 |
| Mahonia x media | | 3 | 2 |
| Maianthemum canadense | Canada Beadruby, Canada mayflower | 1 | 1 |
| Malus angustifolia | Southern Crab, Southern crab apple | 2 | 0 |
| Malus coronaria | Garland Crab, Sweet crab apple | 3 | 1 |
| Malus hupehensis | Chinese Crab, Chinese crab apple, Tea Crabapple, Flowering Tea Crabapple | 2 | 0 |
| Malva moschata | Musk Mallow | 5 | 2 |
| Marrubium vulgare | White Horehound, Horehound | 1 | 3 |
| Matricaria matricarioides | Pineapple Weed | 1 | 2 |
| Matricaria recutita | German Camomile | 1 | 5 |
| Matthiola incana | Stock, Tenweeks stock, Gillyflower, Brompton Stock | 2 | 1 |
| Medeola virginiana | Indian Cucumber Root | 4 | 1 |
| Medicago arborea | Moon Trefoil | 2 | 0 |
| Melaleuca bracteata | River teatree | 0 | 2 |
| Melaleuca linariifolia | Flax-Leaved Paper-Bark, Cajeput tree | 0 | 3 |
| Melaleuca thymifolia | Thymeleaf melaleuca | 0 | 2 |
| Melaleuca uncinata | Broom honeymyrtle | 0 | 1 |
| Melia azederach | Bead Tree, Pride of India, Chinaberry | 3 | 3 |
| Melianthus major | Honey Flower | 3 | 1 |
| Melicope ternata | | 1 | 1 |
| Melilotus albus | White Melilot | 2 | 2 |
| Melilotus officinalis | Melilot, Sweetclover | 2 | 3 |
| Melissa officinalis | Lemon Balm, Common balm, Bee Balm, Sweet Balm, Lemon Balm | 3 | 5 |
| Melittis melissophyllum | Bastard Balm | 1 | 1 |
| Mentha aquatica | Water Mint | 3 | 3 |
| Mentha arvensis | Corn Mint, Wild mint | 3 | 2 |
| Mentha arvensis piperascens | Japanese Mint | 3 | 2 |
| Mentha arvensis villosa | American Wild Mint | 3 | 2 |
| Mentha asiatica | Asian Mint | 3 | 2 |
| Mentha australis | | 0 | 2 |
| Mentha cervina | Hart's Pennyroyal | 3 | 2 |
| Mentha cunninghamia | | 0 | 2 |
| Mentha diemenica | | 2 | 2 |
| Mentha longifolia | Horsemint | 2 | 2 |
| Mentha pulegium | Pennyroyal | 3 | 3 |
| Mentha requienii | Corsican Mint, Mint | 3 | 2 |
| Mentha satureioides | Native Pennyroyal | 2 | 2 |
| Mentha spicata | Spearmint | 4 | 3 |
| Mentha suaveolens | Round-Leaved Mint, Apple mint, Pineapple Mint | 2 | 2 |
| Mentha x gracilis | Ginger Mint | 3 | 2 |
| Mentha x piperita citrata | Eau De Cologne Mint, Eau de Cologne Mint, Peppermint | 2 | 2 |
| Mentha x piperita officinalis | White Peppermint | 3 | 5 |
| Mentha x piperita vulgaris | Black Peppermint | 4 | 5 |
| Mentha x smithiana | Red Raripila Mint | 3 | 2 |
| Mentha x villosa alopecuroides | Apple Mint, Bowles' Mint | 4 | 2 |
| Mercurialis perennis | Dog's Mercury | 0 | 1 |
| Meum athamanticum | Spignel | 2 | 1 |
| Michelia figo | Banana Shrub, Michelia | 1 | 0 |
| Micromeria chamissonis | Yerba Buena | 2 | 2 |
| Microtis unifolia | Onion-Leaf Orchis | 1 | 0 |
| Mimusops elengi | Spanish Cherry, Bakul | 3 | 2 |
| Mirabilis jalapa | Marvel Of Peru, Miracle Flower of Peru, Four O'Clock | 2 | 2 |
| Mitchella repens | Partridge Berry | 3 | 3 |
| Monarda citriodora | Lemon Bergamot, Lemon beebalm. Lemon Mint | 2 | 0 |
| Monarda didyma | Bergamot, Scarlet beebalm, Horsemint, Oswego Tea, Bee Balm | 3 | 2 |
| Monarda pectinata | Plains Lemon Monarda, Pony beebalm | 1 | 2 |
| Monarda punctata | Horse Mint, Spotted beebalm | 1 | 3 |
| Morina coulteriana | | 0 | 0 |
| Morina longifolia | Whorlflower | 0 | 2 |
| Muscari botryoides | Italian Grape Hyacinth, Common grape hyacinth, White Grape Hyacinth | 1 | 0 |
| Muscari comosum | Tassel Hyacinth, Tassel grape hyacinth | 3 | 1 |
| Muscari neglectum | Grape Hyacinth, Starch grape hyacinth | 2 | 0 |
| Myoporum laetum | Ngaio, Ngaio tree, Mousehole Tree | 1 | 1 |
| Myosotis alpestris | Alpine Forget-Me-Not, Scorpion Grass, Forget-Me-Not | 0 | 2 |
| Myrica californica | Californian Bayberry, California Wax Myrtle, California Barberry | 3 | 1 |
| Myrica cerifera | Wax Myrtle - Bayberry Wild Cinnamon, Southern Bayberry, Wax Myrtle, Southern Wax Myrtle | 3 | 3 |
| Myrica gale | Bog Myrtle, Sweetgale | 2 | 2 |
| Myrrhis odorata | Sweet Cicely, Anise | 4 | 3 |
| Myrsine africana | Cape Myrtle | 1 | 3 |
| Myrsine semiserrata | | 1 | 2 |
| Myrtus communis | Myrtle, Foxtail Myrtle | 3 | 3 |
| Narcissus jonquilla | Jonquil | 1 | 0 |
| Narcissus poeticus | Poet's Narcissus | 0 | 1 |
| Narcissus pseudonarcissus | Wild Daffodil, Daffodil | 0 | 2 |
| Narcissus tazetta | Bunchflower Daffodil, Cream narcissus | 0 | 2 |
| Nardostachys grandiflora | Spikenard | 1 | 3 |
| Nauclea latifolia | African Peach | 3 | 4 |
| Nelumbo lutea | American Water Lotus, American lotus | 4 | 1 |
| Nelumbo nucifera | Sacred Water Lotus, Sacred lotus | 4 | 3 |
| Neolitsea sericea | | 1 | 0 |
| Nepeta cataria | Catmint, Catnip | 3 | 2 |
| Nerium oleander | Oleander, Rose Bay | 0 | 2 |
| Nicotiana alata | Tobacco, Jasmine tobacco, Nicotiana, Jasmine Tobacco, Ornamental Tobacco, Flowering Tobacco | 0 | 0 |
| Nicotiana tabacum | Tobacco, Cultivated tobacco | 2 | 2 |
| Nigella damascena | Love-In-A-Mist, Devil in the bush | 3 | 1 |
| Nigella sativa | Black Cumin | 3 | 3 |
| Nothoscordum gracile | Slender false garlic | 2 | 0 |
| Nuphar lutea | Yellow Water Lily, Yellow pond-lily, Rocky Mountain pond-lily, Varigated yellow pond-lily | 3 | 2 |
| Nymphaea alba | White Water Lily, European white waterlily | 3 | 2 |
| Nymphaea odorata | Fragrant Water Lily, American white waterlily | 3 | 3 |
| Nymphaea tuberosa | Tuberous Water Lily, American white waterlily | 3 | 3 |
| Nymphoides peltata | Water Fringe, Yellow floatingheart | 2 | 2 |
| Ocimum basilicum | Sweet Basil, Common Basil, Thai Basil, Tropical Basil | 4 | 3 |
| Ocimum minimum | Bush Basil | 4 | 3 |
| Oenanthe javanica | Water Dropwort, Java waterdropwort, Stolon waterdropwort | 3 | 2 |
| Oenothera albicaulis | Whitest Evening Primrose | 2 | 1 |
| Oenothera biennis | Evening Primrose, Sun Drop, Common evening primrose | 3 | 5 |
| Oenothera brevipes | Golden Suncup | 2 | 0 |
| Oenothera elata hookeri | Hooker's Evening Primrose | 2 | 1 |
| Oenothera glazioviana | Large-Flower Evening Primrose, Redsepal evening primrose | 2 | 2 |
| Oenothera lamarckiana | | 1 | 0 |
| Oenothera odorata | | 1 | 0 |
| Olearia avicenniifolia | Akeake | 0 | 0 |
| Olearia ilicifolia | | 0 | 0 |
| Olearia macrodonta | | 0 | 0 |
| Olearia paniculata | | 0 | 0 |
| Ononis repens | Rest Harrow, Common restharrow | 2 | 1 |
| Ononis spinosa | Spiny Rest Harrow | 2 | 2 |
| Ophrys apifera | Bee Orchid | 2 | 2 |
| Ophrys araneola | | 2 | 2 |
| Ophrys bertolonii | | 2 | 2 |
| Ophrys bombyliflora | | 2 | 2 |
| Ophrys fusca | Brown Bee Orchid | 2 | 2 |
| Ophrys holoserica | Late Spider Orchid | 2 | 2 |
| Ophrys insectifera | Fly Orchid | 2 | 2 |
| Ophrys iricolor | | 2 | 2 |
| Ophrys lutea | Yellow Bee Orchid | 2 | 2 |
| Ophrys scolopax | Woodcock Orchid | 2 | 2 |
| Ophrys sphegodes | Early Spider Orchid | 2 | 2 |
| Ophrys tenthredinifera | Sawfly Orchid | 2 | 2 |
| Ophrys vernixia | | 2 | 2 |
| Orchis coriophora | Bug Orchis | 2 | 2 |
| Orchis mascula | Early Purple Orchis | 2 | 2 |
| Orchis morio | Green-Winged Orchid, Green-winged orchid | 2 | 2 |
| Orchis ustulata | Dark-Winged Orchis | 2 | 2 |
| Origanum majorana | Sweet Marjoram | 3 | 3 |
| Origanum onites | Pot Marjoram | 3 | 1 |
| Origanum vulgare | Oregano, Pot Marjoram | 4 | 3 |
| Origanum vulgare hirtum | Greek Oregano | 4 | 3 |
| Origanum x majoricum | Hardy Marjoram | 2 | 2 |
| Orixa japonica | | 2 | 1 |
| Orontium aquaticum | Golden Club | 3 | 0 |
| Osmanthus americana | | 1 | 0 |
| Osmanthus delavayi | | 0 | 0 |
| Osmanthus fragrans | Fragrant Olive | 2 | 2 |
| Osmanthus heterophyllus | Holly Olive, Holly osmanthus, Chinese Holly, Holly Tea Olive, False Holly | 0 | 0 |
| Osmanthus x burkwoodii | | 0 | 0 |
| Osmorhiza aristata | | 3 | 0 |
| Osmorhiza chilensis | | 3 | 0 |
| Osmorhiza claytonii | Woolly Sweet-Cicely, Clayton's sweetroot | 3 | 1 |
| Osmorhiza longistylis | Aniseroot, Longstyle sweetroot | 3 | 1 |
| Osmorhiza obtusa | | 3 | 0 |
| Osmorhiza occidentalis | Western Sweet-Cicely, Western sweetroot | 3 | 2 |
| Oxalis enneaphylla | Scurvy Grass | 2 | 0 |
| Oxydendrum arboreum | Sorrel Tree, Sourwood | 3 | 2 |
| Oxytropis lambertii | Crazy Weed, Purple locoweed | 2 | 0 |
| Pachysandra terminalis | Japanese Spurge, Japanese pachysandra, Pachysandra | 2 | 0 |
| Paederia scandens | | 1 | 2 |
| Paeonia lactiflora | Chinese Peony, Peony | 1 | 3 |
| Paeonia suffruticosa | Moutan, Moutan peony, Tree Peony, Japanese Tree Peony | 1 | 2 |
| Paliurus spina-christi | Christ's Thorn, Jeruselem thorn | 1 | 1 |
| Pancratium maritimum | Sea Daffodil | 1 | 0 |
| Pandanus amaryllifolius | Fragrant Pandan | 3 | 2 |
| Paris quadrifolia | Herb Paris | 0 | 2 |
| Passiflora caerulea | Passion Flower, Bluecrown passionflower, Blue Passion Flower | 3 | 0 |
| Passiflora edulis | Passion Flower, Purple granadilla | 4 | 1 |
| Passiflora x colvillii | Passion Flower | 2 | 0 |
| Paulownia tomentosa | Foxglove Tree, Princesstree, Empress Tree, Royal Paulownia, | 1 | 2 |
| Pectis angustifolia | Narrowleaf Pectis, Lemonscent | 1 | 1 |
| Pedicularis resupinata | Lousewort | 1 | 2 |
| Pelargonium capitatum | Rose-Scented Geranium | 0 | 3 |
| Pelargonium crispum | Lemon Geranium | 2 | 2 |
| Pelargonium exstipulatum | Pennyroyal Geranium | 1 | 2 |
| Pelargonium fragrans | Nutmeg Geranium | 1 | 2 |
| Pelargonium fulgidum | | 0 | 1 |
| Pelargonium glutinosum | Pheasant's Foot Geranium | 0 | 1 |
| Pelargonium graveolens | Rose Geranium, Sweet scented geranium | 2 | 3 |
| Pelargonium incrassatum | | 0 | 1 |
| Pelargonium odoratissimum | Apple Geranium | 2 | 3 |
| Pelargonium peltatum | Ivy-Leaved Geranium, Hanging Geranium, Ivy Geranium | 1 | 1 |
| Pelargonium quercifolium | Oak-Leaved Geranium | 0 | 2 |
| Pelargonium radens | Rasp-leaf pelargonium | 0 | 2 |
| Pelargonium tomentosum | Peppermint Geranium | 1 | 2 |
| Pelargonium triste | | 1 | 1 |
| Pelargonium vitifolium | Grapeleaf geranium | 0 | 1 |
| Pelargonium zonale | Horseshoe geranium | 1 | 1 |
| Peltaria alliacea | Garlic Cress | 4 | 0 |
| Perilla frutescens | Shiso, Beefsteakplant, Spreading Beefsteak Plant | 4 | 3 |
| Perilla frutescens nankinensis | Purple Shiso | 4 | 3 |
| Periploca graeca | Silk Vine | 0 | 1 |
| Perovskia atriplicifolia | Russian Sage, Azure Sage | 1 | 1 |
| Petroselinum crispum | Parsley | 4 | 4 |
| Petroselinum crispum tuberosum | Hamburg Parsley | 4 | 3 |
| Peucedanum oreoselinum | | 0 | 1 |
| Peumus boldus | Boldu, Boldo | 2 | 3 |
| Phellodendron amurense | Amur Cork Tree, Chinese Corktree | 1 | 3 |
| Phellodendron amurense sachalinense | | 0 | 0 |
| Phellodendron chinense | Chinese Cork Tree | 0 | 3 |
| Philadelphus coronarius | Mock Orange, Sweet mock orange | 0 | 0 |
| Philadelphus delavayi | | 0 | 0 |
| Philadelphus lewisii | Mock Orange, Lewis' mock orange | 0 | 1 |
| Philadelphus microphyllus | Littleleaf Mock Orange | 1 | 0 |
| Philadelphus pubescens | Hoary mock orange | 0 | 0 |
| Philadelphus x virginalis | Mock Orange | 0 | 0 |
| Phillyrea latifolia | | 1 | 1 |
| Phlomis fruticosa | Jerusalem Sage, Shrubby Jerusalem sage | 0 | 0 |
| Phlox paniculata | Garden Phlox, Fall phlox, Perennial Phlox, Tall Phlox, Summer Phlox | 0 | 0 |
| Photinia arbutifolia | Christmas Berry | 2 | 1 |
| Photinia serratifolia | Taiwanese photinia , Chinese Photinia | 0 | 1 |
| Photinia villosa | Oriental photinia | 1 | 0 |
| Picea abies | Norway Spruce | 2 | 1 |
| Picea breweriana | Weeping Spruce, Brewer spruce | 2 | 0 |
| Picea engelmannii | Mountain Spruce, Engelmann spruce | 2 | 2 |
| Picea glauca | White Spruce, Black Hills Spruce, Canadian Spruce | 2 | 2 |
| Picea mariana | Black Spruce, Swamp Spruce | 2 | 2 |
| Picea orientalis | Caucasian Spruce | 2 | 0 |
| Picea pungens | Blue Spruce, Colorado Spruce | 2 | 0 |
| Pieris japonica | Lily Of The Valley Bush, Japanese pieris, Japanese Andromeda, Lily of the Valley Shrub, Japanese Pie | 0 | 0 |
| Pimpinella anisum | Aniseed (Saunf - Hindi), Anise burnet saxifrage | 4 | 3 |
| Pinus jeffreyi | Jeffrey Pine | 3 | 2 |
| Pinus lambertiana | Sugar Pine | 3 | 2 |
| Pinus mugo | Dwarf Mountain Pine, Mugo pine, Mountain Pine | 1 | 2 |
| Pinus pungens | Prickle Pine, Table Mountain pine | 1 | 2 |
| Pinus resinosa | Red Pine | 1 | 2 |
| Pinus sabiniana | Digger Pine, California foothill pine, Bull Pine, Gray Pine, Digger Pine | 4 | 2 |
| Pinus sylvestris | Scot's Pine, Scotch Pine | 2 | 3 |
| Piper betle | Betel | 2 | 3 |
| Pistacia lentiscus | Mastic Tree - Pistachier Lentisque | 2 | 2 |
| Pistacia terebinthus | Terebinth, Cyprus turpentine | 2 | 2 |
| Pittosporum crassifolium | Karo, Stiffleaf cheesewood | 0 | 0 |
| Pittosporum tenuifolium | Tawhiwhi | 2 | 0 |
| Pittosporum tobira | Tobira, Japanese cheesewood, Australian Laurel, Mock Orange, Japanese Pittosporum | 0 | 0 |
| Pittosporum undulatum | Cheesewood, Australian cheesewood, Cheesewood, Pittosporum, Orange Berry Pittosporum, Victorian Box | 0 | 0 |
| Plantago media | Hoary Plantain | 2 | 2 |
| Platanthera bifolia | Butterfly Orchid | 2 | 1 |
| Platanthera dilatata | White Bog-Orchid, Scentbottle, Sierra bog orchid | 3 | 1 |
| Platystemon californicus | Creamcups | 1 | 0 |
| Podophyllum peltatum | American Mandrake, Mayapple, Ground Lemon, Mandrake, Mayapple | 2 | 4 |
| Polianthes tuberosa | Tuberose | 1 | 0 |
| Polygonatum odoratum | Solomon's Seal | 2 | 3 |
| Polyscias fruticosa | Ming Aralia, Chinese Ariala | 2 | 2 |
| Poncirus trifoliata | Bitter Orange, Hardy orange, Trifoliat Orange, Japanese Hardy Orange | 3 | 2 |
| Populus alba | White Poplar | 1 | 2 |
| Populus balsamifera | Balsam Poplar, Black cottonwood | 1 | 3 |
| Populus nigra | Black Poplar, Lombardy poplar | 1 | 3 |
| Populus simonii | Simon poplar, Chinese Poplar | 1 | 1 |
| Populus trichocarpa | Western Balsam Poplar, Black cottonwood | 1 | 3 |
| Populus x jackii | Balm Of Gilead | 0 | 3 |
| Primula auricula | | 0 | 1 |
| Primula involucrata | | 0 | 2 |
| Primula veris | Cowslip, Cowslip primrose | 3 | 3 |
| Primula vulgaris | Primrose, Common Primrose, English Primrose | 3 | 3 |
| Proboscidea louisianica | Unicorn Plant, Ram's horn | 2 | 0 |
| Prostanthera cineolifera | | 0 | 1 |
| Prostanthera rotundifolia | Mint Bush | 0 | 2 |
| Prumnopitys andina | Plum-Fruited Yew | 3 | 0 |
| Prunus angustifolia | Chickasaw Plum, Watson's plum, Hally Jolivette Cherry | 3 | 1 |
| Prunus angustifolia watsonii | Sand Plum | 4 | 1 |
| Prunus armeniaca mandschurica | Manchurian apricot | 4 | 3 |
| Prunus emarginata | Bitter Cherry | 2 | 2 |
| Prunus ilicifolia | Holly-Leaved Cherry | 2 | 1 |
| Prunus lannesiana | Oshima Cherry | 2 | 1 |
| Prunus laurocerasus | Cherry Laurel, English Laurel | 4 | 3 |
| Prunus lusitanica | Portugal Laurel | 3 | 1 |
| Prunus mume | Japanese Apricot, Japanese Flowering, Apricot | 3 | 3 |
| Prunus x yedoensis | Tokyo Cherry | 2 | 1 |
| Pseudognaphalium obtusifolium | White Balsam, Rabbit-tobacco | 0 | 2 |
| Pseudopanax edgerleyi | | 0 | 0 |
| Pseudotsuga menziesii | Douglas Fir, Rocky Mountain Douglas-fir | 2 | 2 |
| Ptaeroxylon obliquum | Sneezewood | 0 | 2 |
| Ptelea trifoliata | Hop Tree, Common hoptree, Pallid hoptree | 2 | 3 |
| Pterocarpus indicus | Amboyna, Indian Padauk, Burmese Rosewood, Narra, Bloodwood | 2 | 2 |
| Pterocarya fraxinifolia | Caucasian Wingnut | 1 | 1 |
| Pterocarya rhoifolia | Japanese Wingnut | 1 | 0 |
| Pterocarya stenoptera | Chinese wingnut | 0 | 2 |
| Pueraria montana | Kudzu Vine | 4 | 5 |
| Pueraria montana lobata | Kudzu Vine | 4 | 5 |
| Pycnanthemum flexuosum | Mountain Mint, Appalachian mountainmint | 1 | 2 |
| Pycnanthemum muticum | Cluster Mountain Mint | 1 | 0 |
| Pyrola elliptica | Waxflower Shinleaf | 0 | 2 |
| Pyrola minor | Wintergreen, Snowline wintergreen | 1 | 1 |
| Pyrola rotundifolia | Round-Leaved Wintergreen | 0 | 2 |
| Reseda odorata | Mignonette, Garden mignonette | 0 | 1 |
| Rhaphiolepis umbellata | Japanese Hawthorn | 1 | 0 |
| Rhodiola rosea | Rose Root | 2 | 3 |
| Rhododendron anthopogon | | 1 | 2 |
| Rhododendron luteum | Honeysuckle Azalea | 0 | 0 |
| Rhus aromatica | Lemon Sumach, Fragrant sumac | 4 | 2 |
| Rhus trichocarpa | | 0 | 0 |
| Ribes fasciculatum | | 1 | 0 |
| Ribes fragrans | | 3 | 0 |
| Ribes gayanum | | 3 | 0 |
| Ribes glandulosum | Skunk Currant | 2 | 1 |
| Ribes laurifolium | | 2 | 0 |
| Ribes odoratum | Buffalo Currant | 4 | 1 |
| Ribes ussuriense | | 2 | 0 |
| Ribes viburnifolium | | 2 | 0 |
| Robinia luxurians | New Mexico locust | 1 | 0 |
| Robinia pseudoacacia | Black Locust, Yellow Locust | 3 | 2 |
| Rosa banksiae | Banksia Rose | 2 | 1 |
| Rosa californica | California Wild Rose | 2 | 2 |
| Rosa canina | Dog Rose | 3 | 3 |
| Rosa centifolia | Provence Rose, Cabbage rose | 2 | 2 |
| Rosa chinensis | China Rose | 1 | 2 |
| Rosa gallica | French Rose | 2 | 2 |
| Rosa laevigata | Cherokee Rose | 2 | 3 |
| Rosa moschata | Musk Rose | 2 | 1 |
| Rosa multiflora | Japanese Rose, Multiflora rose | 2 | 2 |
| Rosa pimpinellifolia | Burnet Rose, Scotch rose | 2 | 1 |
| Rosa roxburghii | Sweet Chestnut Rose, Chestnut rose | 2 | 1 |
| Rosa rubiginosa | Sweet Briar, Sweetbriar rose | 2 | 3 |
| Rosa rugosa | Ramanas Rose, Rugosa rose | 5 | 2 |
| Rosa sericea | Himalayan Rose | 2 | 1 |
| Rosa sericea pteracantha | | 2 | 1 |
| Rosa setipoda | | 2 | 1 |
| Rosa villosa | Apple Rose | 4 | 1 |
| Rosa virginiana | Virginia Rose | 2 | 1 |
| Rosa wichuraiana | Memorial Rosa | 2 | 1 |
| Rosa x damascena | Damask Rose | 2 | 1 |
| Rosmarinus officinalis | Rosemary | 3 | 3 |
| Rubus australis | | 2 | 0 |
| Rubus deliciosus | Rocky Mountain Raspberry, Delicious raspberry | 2 | 0 |
| Rubus odoratus | Thimbleberry, Purpleflowering raspberry | 3 | 2 |
| Ruta chalepensis | Egyptian Rue, Fringed rue | 1 | 1 |
| Ruta graveolens | Rue, Common rue, Herb of Grace, Garden Rue | 1 | 3 |
| Ruta montana | Mountain Rue | 1 | 0 |
| Salix aurita | Eared Sallow | 0 | 2 |
| Salix pentandra | Bay Willow, Laurel willow | 1 | 3 |
| Salix triandra | Almond-Leaved Willow, Almond willow | 1 | 2 |
| Salvia clevelandii | Blue Sage, Fragrant sage, Chaparral Sage | 1 | 0 |
| Salvia dorisiana | Sage Fruity Pineapple | 3 | 0 |
| Salvia elegans | Pineapple Sage, Pineapple-scented Sage, | 3 | 1 |
| Salvia fruticosa | Greek Sage, Greek oregano | 2 | 3 |
| Salvia glutinosa | Jupiter's Distaff, Sticky Sage | 1 | 0 |
| Salvia lavandulifolia | Spanish Sage | 2 | 3 |
| Salvia microphylla | Blackcurrant Sage | 2 | 2 |
| Salvia officinalis | Sage, Kitchen sage, Small Leaf Sage, Garden Sage | 4 | 5 |
| Salvia sclarea | Clary, Europe sage, Clary Sage | 2 | 2 |
| Salvia viridis | Clary, Annual clary | 2 | 2 |
| Sambucus ebulus | Dwarf Elder, Dwarf elderberry | 1 | 2 |
| Sambucus nigra | Elderberry - European Elder, Black elderberry, American black elderberry, Blue elderberry, Europea | 4 | 3 |
| Sambucus nigra spp canadensis | American Elder | 4 | 3 |
| Sambucus racemosa | Red Elder, Red elderberry, Rocky Mountain elder, European Red Elderberry | 3 | 2 |
| Sambucus racemosa kamtschatica | Red Elder | 3 | 2 |
| Santalum austrocaledonicum | Pacific Sandalwood | 0 | 1 |
| Santalum ellipticum | Coast Sandalwood | 1 | 2 |
| Santalum freycinetianum | Lanai Sandalwood, Hawaiian Sandalwood | 1 | 2 |
| Santalum haleakalae | Haleakala Sandalwood, Lliahi | 1 | 2 |
| Santalum paniculatum | Mountain Sandalwood, Hawaiian Sandalwood, 'Iliahi | 1 | 2 |
|