Holarctis – North American

North American floristic region covers almost all area of North America, except southern and northern part of continent. Sometimes is classified into other sub areas (North Atlantic, South Atlantic, North Pacific and South Pacific). Flora is really rich here, these area has 6 endemic families altogether. Share of endemic species is high – is approaching to the 50 %. Northern vegetation is influenced by Subarctic and slightly by Arctic. Southern parts of this area are then species-richer, with higher amount of endemic species. Development is influenced by Asian tropics and partially by the Neotropis area.

• ACHILLEA ALPINA L. – Siberian Yarrow, Chinese Yarrow
• AEONIUM HAWORTHII Webb et Berthel. – Haworth’s Aeonium
• AGASTACHE FOENICULUM (Pursh) Kuntze – Giant Hyssop, Blue Giant-Hyssop
• AGAVE CHRYSANTHA Peebles – Goldenflower Century Plant, Golden-flowered Agave
• AGOSERIS GLAUCA (Pursh) Raf. – Pale False-dandelion, Prairie Agoseris, Short-beaked Agoseris
• ALISMA PLANTAGO-AQUATICA L. – Common Water-plantain
• ALLIUM TEXTILE A. Nelson et J. F. Macbr. – Prairie Onion, Textile Onion
• ALLOTROPA VIRGATA Torr. et A. Gray – Candycane, Sugarstick
• ALNUS INCANA subsp. TENUIFOLIA (Nutt.) Breitung – Mountain Alder
• AMERORCHIS ROTUNDIFOLIA (Banks ex Pursh) Hultén – Round-leaved Orchid or Orchis, Small Round-leaved Orchid
• ANDROSACE LEHMANNIANA Spreng. – Sweet-flowered Rockjasmine, Sweet-flowered Androsace
• ANDROSACE SEPTENTRIONALIS L. – Pygmyflower Rockjasmine, Candelabra Plant
• ANEMONE CANADENSIS L. – Canada Anemone, Round-headed Anemone, Meadow Anemone
• ANEMONE DRUMMONDII S. Watson – Drummond’s Anemone, Drummond’s Windflower
• ANEMONE MULTIFIDA Poir. – Cut-leaved Anemone, Windflower
• ANEMONE NARCISSIFLORA L. – Narcissus Anemone
• ANEMONE PARVIFLORA Michx. – Small Wood Anemone, Northern Anemone, Small-flowered Anemone
• ANEMOPSIS CALIFORNICA (Nutt.) Hook. et Arn. – Yerba Mansa, Apache-beads
• ANTENNARIA DIOICA (L.) Gaertner – Stoloniferous Pussytoes, Mountain Everlasting
• ANTENNARIA PARVIFOLIA Nutt. – Small-leaved Pussytoes, Small-leaved Everlasting, Nuttall’s Pussytoes
• ANTENNARIA PULCHERRIMA (Hook.) Greene – Showy Pussytoes, Handsome Pussytoes
• AQUILEGIA BREVISTYLA Hook. – Blue Columbine, Smallflower Columbine
• ARABIS GLABRA (L.) Bernh. – Tower Mustard
• ARALIA NUDICAULIS L. – Wild Sarsaparilla, False Sarsaparilla, Shot Bush, Small Spikenard, Wild Liquorice, Rabbit Root
• ARGEMONE PLEIACANTHA Greene – Southwestern Pricklypoppy, Bluestem Pricklepoppy, Prickly Poppy
• ARISTOLOCHIA CLEMATITIS L. – Birthwort
• ARNICA ANGUSTIFOLIA subsp. TOMENTOSA (J. M. Macoun) G. W. Douglas et Ruyle-Dougl. – Narrowleaf Arnica
• ARNICA CHAMISSONIS Less. – Chamisso Arnica, Leafy Arnica
• ARNICA CORDIFOLIA Hook. – Heartleaf Arnica
• ARTEMISIA FRIGIDA Willd. – Pasture Sage, Pasture Sagewort
• ASCLEPIAS SYRIACA L. – Common Milkweed
• ASPLENIUM RUTA-MURARIA L. – Wall Rue
• ASPLENIUM SEPTENTRIONALE (L.) Hoffm. – Forked Spleenwort
• ASTER ALPINUS L. – Alpine Aster
• ASTRAGALUS AGRESTIS Douglas ex G. Don – Purple Milkvetch, Field Milkvetch, Meadow Milkvetch, Purple Loco
• ASTRAGALUS ALPINUS L. – Alpine Milkvetch
• ASTRAGALUS AMERICANUS (Hook.) M. E. Jones – American Milkvetch
• ASTRAGALUS AUSTRALIS (L.) Lam. – Indian Milkvetch
• ASTRAGALUS CRASSICARPUS Nutt. – Groundplum Milkvetch, Buffalobean
• ASTRAGALUS DRUMMONDII Hook. – Drummond’s Milkvetch
• ASTRAGALUS GILVIFLORUS E. Sheld. – Cushion Milkvetch, Plains Milkvetch, Yellow Tufted Milkvetch
• BALSAMORHIZA SAGITTATA (Pursh.) Nutt. – Arrowleaf Balsamroot
• BOTRYCHIUM LUNARIA (L.) Schwartz – Common Moonwort
• BOUTELOUA GRACILIS (Kunth) Lag. ex Steud. – Blue Grama, Grandma’s Eyebrows, Eyelash Grass
• BUTOMUS UMBELLATUS L. – Flowering Rush
• CAKILE MARITIMA Scop. – Sea Rocket, Two-head Sea Rocket, European Searocket
• CALLUNA VULGARIS (L.) Hull. – Heather, Ling
• CALOCHORTUS APICULATUS Baker – Three-spot Mariposa-Lily, Pointedtip Mariposa Lily
• CALYPSO BULBOSA (L.) Oakes – Venus’-slipper, Fairyslipper, Calypso Orchid
• CALYSTEGIA SEPIUM (L.) R. Br. – Hedge Bindweed, Bellbine
• CARDUUS NUTANS L. – Musk Thistle, Nodding Plumeless Thistle
• CAREX AUREOLENSIS Steud. – Goldenfruit Sedge
• CAREX BUXBAUMII Wahlenb. – Buxbaum’s Sedge, Club Sedge
• CAREX FILIFOLIA Nutt. – Threadleaf Sedge
• CAREX INOPS subsp. HELIOPHILA (Mack.) Crins – Sun-loving Sedge, Long-stolon Sedge, Sun Sedge
• CARNEGIEA GIGANTEA (Engelm.) Britton et Rose – Saguaro, Giant Cactus
• CHAMAERHODOS ERECTA (L.) Bunge – Little Rose, Little Ground Rose, American Chamaerhodos
• CHENOPODIUM CAPITATUM (L.) Asch. – Strawberry Blite, Strawberry Goosefoot, Strawberry Spinach, Indian Paint, Indian Ink
• CHRYSOSPLENIUM IOWENSE Rydb. – Golden Saxifrage, Iowa Golden Saxifrage
• CICUTA MACULATA L. – Spotted Water Hemlock, Spotted Parsley, Spotted Cowbane, Suicide Root
• CIRSIUM DRUMMONDII Torr. et A. Gray – Drummond’s Thistle, Dwarf or Short-stemmed Thistle
• CIRSIUM FLODMANII (Rydb.) Arthur – Flodman’s Thistle, Prairie Thistle, Woolly Thistle, Hollow-root Thistle
• CIRSIUM HOOKERIANUM Nutt. – White Thistle, Hooker’s Thistle
• CIRSIUM HORRIDULUM Michx. – Horrid Thistle, Bristly Thistle, Bull Thistle, Yellow Thistle
• CLEMATIS CRISPA L. – Marsh Clematis, Curly Clematis, Blue-jasmine
• CLEOME LUTEA Hook. – Yellow Spiderflower, Yellow Bee Plant
• COGSWELLIA MACROCARPA (Nutt. ex Torr. et A. Gray) M. E. Jones – Large-fruited Prairie Parsley, Bigseed Biscuitroot, Giant-seed Lomatium
• COMANDRA UMBELLATA (L.) Nutt. – Bastard Toadflax, Pale Comandra, Common Comandra
• CORALLORHIZA MACULATA (Raf.) Raf. – Spotted Coralroot, Western Coralroot, Summer Coralroot
• CORALLORHIZA MERTENSIANA Bong. – Pacific Coralroot, Mertens‘ Coralroot, Western Coralroot
• CORALLORHIZA STRIATA Lindl. – Striped Coralroot
• CORALLORHIZA TRIFIDA Châtel. – Pale / Northern / Yellow Coralroot
• CORNUS CANADENSIS L. – Bunchberry, Canadian Bunchberry, Canadian Dwarf Cornel, Crackerberry, Creeping Dogwood
• CORNUS DRUMMONDII C. A. Mey. – Roughleaf Dogwood, Drummond’s Dogwood
• CORNUS SERICEA L. – Red-osier Dogwood, Red-stem Dogwood, Red-rood, American Dogwood, Western Dogwood, Red Willow
• CORYDALIS AUREA Willd. – Golden Corydalis, Scrambled Eggs
• CORYDALIS SEMPERVIRENS Pers. – Pink Corydalis, Pink and Yellow Corydalis, Rock Harlequin
• CYLINDROPUNTIA BIGELOVII (Engelm.) F. M. Knuth – Teddy-bear Cholla
• CYPERUS ERAGROSTIS Lam. – Drain Flat Sedge, Pale Galingale, Umbrella Sedge
• CYPRIPEDIUM PARVIFLORUM Salisb. – Yellow Lady’s slipper, Mocassin Flower, Hairy Yellow Ladyslipper
• CYPRIPEDIUM PASSERINUM Richardson – Sparrow’s-egg Lady’s-slipper, Northern Lady’s-slipper, Franklin’s Lady’s-slipper
• DALEA CANDIDA Willd. – White Prairie-clover
• DASYLIRION WHEELERI S. Watson ex Rothr. – Sotol, Common Sotol, Desert Spoon, Spoon Leaf
• DIANTHUS DELTOIDES L. – Maiden Pink
• DIANTHUS REPENS Willd. – Northern Pink
• DIETERIA CANESCENS (Pursh) Nutt. – Hoary Aster, Hoary Tansyaster
• DIGITALIS GRANDIFLORA Miller – Large Yellow Foxglove
• DIPHASIASTRUM COMPLANATUM (L.) Holub – Groundcedar, Creeping Jenny, Northern Running-pine
• DODECATHEON CONJUGENS Greene – Shooting Star, Mountain Shootingstar, Bonneville Shootingstar
• DROSERA ROTUNDIFOLIA L. – Common Sundew
• DRYOPTERIS LUDOVICIANA (Kunze) Small – Southern Woodfern
• ECHINOCEREUS ARIZONICUS Rose ex Orcutt – Arizona Claret-cup Cactus, Arizona Hedgehog Cactus
• ECHINOCEREUS COCCINEUS Engelm. – Claret-cup Cactus, Scarlet Hedgehog Cactus
• ECHINOCEREUS RIGIDISSIMUS (Engelm.) F. Haage – Arizona Rainbow Cactus, Rainbow Hedgehog Cactus
• ECHIUM VULGARE L. – Viper’s Bugloss
• EPILOBIUM ANAGALLIDIFOLIUM Lam. – Alpine Willowherb, Pimpernel Willowherb
• EPILOBIUM ANGUSTIFOLIUM L. – Rosebay Willowherb
• ERANTHIS HYEMALIS (L.) Salisb. – Winter Aconite
• ERIGERON CAESPITOSUS Nutt. – Tufted Fleabane
• ERIGERON COMPOSITUS Pursh – Cut-leaved Fleabane, Dwarf Mountain Fleabane
• ERIGERON GLABELLUS Nutt. – Smooth Fleabane, Streamside Fleabane
• ERIGERON HUMILIS Graham – Arctic Fleabane, Alpine Fleabane
• ERIGERON SPECIOSUS (Lindl.) DC. – Showy Fleabane, Aspen Fleabane, Aspen daisy, Garden Fleabane
• ERIOGONUM ANDROSACEUM Benth. – Wild Buckwheat, Rock-jasmine Buckwheat, Silverplant
• ERIOGONUM FLAVUM Nutt. ex Benth. – Yellow Umbrellaplant, Golden Buckwheat, Alpine Golden Buckwheat
• ERIOGONUM OVALIFOLIUM Nutt. – Cushion Buckwheat, Silverplant, Wild Buckwheat, Steamboat Buckwheat
• ERIOGONUM UMBELLATUM Torr. – Umbrellaplant, Sulphurflower Buckwheat, Sulphur Flower
• ERYTHRINA FLABELLIFORMIS Kearney – Coral Bean, Southwest Coral Bean, Chilicote
• ERYTHRONIUM MONTANUM S. Watson – Avalanche Lily, White Avalanche Lily
• EUPHORBIA RADIANS Benth. – Sun Spurge
• EURYBIA CONSPICUA (Lindl.) G. L. Nesom – Showy Aster, Western Showy Aster
• EURYBIA SIBIRICA (L.) G. L. Nesom – Siberian Aster, Arctic Aster
• EUTHAMIA GRAMINIFOLIA (L.) Nutt. – Flat-top Goldenrod, Flat-top Goldentop
• FRASERA SPECIOSA Douglas ex Hook. – Green Gentian, Monument Plant, Elkweed, Deer’s Ears, Showy Elkweed
• GAILLARDIA ARISTATA Pursh – Gaillardia, Blanketflower, Common Blanketflower
• GALIUM TRIFIDUM L. – Small Bedstraw, Threepetal Bedstraw
• GALIUM TRIFLORUM Michx. – Sweet-scented Bedstraw, Cudweed, Fragrant Bedstraw
• GAULTHERIA PROCUMBENS L. – Eastern Teaberry, Checkerberry, Boxberry, American Wintergreen
• GAURA COCCINEA Nutt. ex Pursh – Butterfly Weed, Scarlet Gaura, Scarlet Beeblossom
• GENTIANA AFFINIS Griseb. – Prairie Gentian, Pleated Gentian, Trapper’s Gentian, Bottle Gentian
• GENTIANELLA AMARELLA (L.) Börner – Autumn Dwarf Gentian
• GENTIANOPSIS MACOUNII (Holm) Iltis – Macoun’s Fringed Gentian, Macoun’s Gentian
• GENTIANOPSIS THERMALIS (Kuntze) Iltis – Rocky Mountain Fringed Gentian
• GEOCAULON LIVIDUM (Richardson) Fernald – False Toadflax, Northern Comandra
• GERANIUM BICKNELLII Britton – Bicknell’s Cranesbill
• GERANIUM ERIANTHUM DC. – Northern Geranium, Woolly Geranium, Northern Crane’s-bill
• GERANIUM RICHARDSONII Fisch. et Trautv. – Richardson’s Geranium, Wild White Geranium, Richardson’s Cranebill
• GERANIUM VISCOSISSIMUM Fisch. et C. A. Mey. – Sticky Purple Geranium, Sticky Geranium, Sticky Purple Crane’s-bill
• GEUM TRIFLORUM Pursh – Three-flowered Avens, Prairie Smoke, Old Man’s Whiskers
• GLANDULARIA BIPINNATIFIDA (Schauer) Nutt. – Southwestern Mock Vervain, Dakota Verbena
• GLAUX MARITIMA L. – Sea-milkwort
• GLYCYRRHIZA LEPIDOTA Pursh – Wild Licorice, American Licorice, Nuttall’s Licorice
• GOMPHRENA HAAGEANA Klotzsch – Rio Grande Globe Amaranth
• GOODYERA OBLONGIFOLIA Raf. – Giant Rattlesnake-plantain, Menzies’s Giant Rattlesnake-plantain
• GOODYERA REPENS (L.) R. Br. – Lesser Rattlesnake Plantain, Dwarf Rattlesnake-plantain, Creeping Lady’s-tresses
• GRINDELIA SQUARROSA (Pursh) Dunal – Gumweed, Curlycup Gumweed, Curly-top Gumweed, Rosinweed, Tarweed
• GUTIERREZIA SAROTHRAE (Pursh) Britton et Rusby – Broom Snakeweed, Broomweed, Snakeweed, Matchweed
• HALENIA DEFLEXA (Sm.) Griseb. – Spurred Gentian, American Spurred Gentian
• HEDYSARUM ALPINUM L. – Alpine Sweet-vetch, Alpine Hedysarum
• HEDYSARUM BOREALE Nutt. – Northern Sweet-vetch, Northern Hedysarum, Boreal Sweet-vetch, Utah Sweetvetch, Plains Sweet-broom
• HEDYSARUM SULPHURESCENS Rydb. – Yellow / White Sweet-vetch, Yellow Hedysarum
• HELIANTHUS ANNUUS L. – Common Annual Sunflower, Sunflower, Wild Sunflower
• HELIANTHUS MAXIMILIANI Schrad. – Maximilan Sunflower
• HELIANTHUS NUTTALLII Torr. et A. Gray – Nuttall’s Sunflower, Common Tall Sunflower
• HELIANTHUS PAUCIFLORUS subsp. SUBRHOMBOIDEUS (Rydb.) O. Spring et E. E. Schill. – Stiff Sunflower, Rhombic-leaved Sunflower
• HESPEROCALLIS UNDULATA A. Gray – Desert Lily, Ajo Lily
• HETEROTHECA VILLOSA (Pursh) Shinners – Golden Aster, Hairy Goldenaster
• HIERACIUM SCOULERI Hooker – Scouler’s Woollyweed, Hounds-tongue Hawkweed
• HIPPURIS VULGARIS L. – Common Mare’s-tail
• HYMENOCALLIS LIRIOSME (Raf.) Shinners – Western Marsh Spider-lily, Louisiana Marsh Spider-lily, Spring Spiderlily
• ILEX VOMITORIA Aiton – Yaupon, Yaupon Holly, Indian Tea, Winterberry, Christmasberry, Cassena, Evergreen Holly
• ILIAMNA RIVULARIS (Douglas ex Hook.) Greene – Streambank Wild Hollyhock, Wild Hollyhock, Mountain Globemallow
• IPOMOEA ALBA L. – Moonflower, Moon Vine, Tropical White Morning-glory
• IPOMOEA PES-CAPRAE (L.) R. Br. – Railroad Vine, Bayhops
• IPOMOEA QUAMOCLIT L. – Cypress Vine, Cardinal Creeper, Cardinal Vine, Star Glory, Hummingbird Vine, Cypressvine Morning Glory
• IRIS FULVA Ker Gawl. – Copper Iris
• IRIS MISSOURIENSIS Nutt. – Western Blue Flag, Rocky Mountain Iris
• IRIS VIRGINICA L. – Southern Blue Flag, Virginia Iris
• LARREA TRIDENTATA (Sessé et Moc. ex DC.) Coville – Creosote Bush, Chaparral
• LATHYRUS OCHROLEUCUS Hook. – Yellow Peavine, Cream-coloured Vetchling, Pale Vetchling, Cream Pea
• LEWISIA PYGMAEA (A. Gray) B. L. Rob. – Alpine Lewisia, Pygmy Bitterroot
• LEWISIA REDIVIVA Pursh – Bitterroot
• LILIUM PHILADELPHICUM L. – Western Wood Lily, Prairie Lily, Red Lily
• LINUM LEWISII Pursh – Wild Blue Flax, Blue Flax, Prairie Flax
• LINUM RIGIDUM Pursh – Yellow Flax, Stiffstem Flax
• LIPARIS LOESELII (L.) Rich. – Yellow Widelip Orchid, Fen Orchid
• LIQUIDAMBAR STYRACIFLUA L. – Sweetgum, American Sweetgum, Hazel Pine, Bilsted, Red-gum, Satin Walnut, Star-leaved Gum, Alligator Wood
• LISTERA BOREALIS Morong – Northern Twayblade
• LISTERA CORDATA (L.) R. Br. – Heartleaf Twayblade, Lesser Twayblade
• LITHOSPERMUM INCISUM Lehm. – Narrow-leaved Pucoon, Plains Stoneseed, Fringed Gromwell
• LITHOSPERMUM RUDERALE Douglas ex Lehm. – Woolly Gromwell, Western Stonessed, Yellow Pucoon
• LUPINUS SERICEUS Pursh – Perennial Lupine, Flexile Lupine, Silky Lupine
• LYCHNIS CHALCEDONICA L. – Maltese Cross, Scarlet-lychnis
• LYCOPODIUM ANNOTINUM L. – Stiff Clubmoss
• LYGODESMIA JUNCEA (Pursh) D. Don ex Hook. – Rush Skeletonplant
• LYSICHITON AMERICANUS Hulten et H. St. John – Western Skunk Cabbage, Yellow Skunk Cabbage
• LYSIMACHIA CILIATA L. – Fringed Loosestrife
• MAGNOLIA GRANDIFLORA L. – Southern Magnolia, Bull-bay
• MAGNOLIA VIRGINIANA L. – Swamp-bay, Sweet-bay, Sweet-bay Magnolia
• MAIANTHEMUM CANADENSE Desf. – Wild Lily-of-the-valley, Canada Mayflower, Two-leaved Solomonseal
• MAIANTHEMUM RACEMOSUM subsp. AMPLEXICAULE (Nutt.) LaFrankie – False Solomon’s Seal, Feathery False Lily of the Valley, Solomon’s Plume, False Spikenard, Treacleberry
• MAIANTHEMUM STELLATUM (L.) Link – Little False Solomon’s-seal, Starflower Solomon’s-seal
• MEDEOLA VIRGINIANA L. – Indian Cucumber-root, Indian Cucumber
• MENYANTHES TRIFOLIATA L. – Bogbean
• MERTENSIA MARITIMA (L.) Gray – Northern Shorewort, Oysterplant, Oysterleaf, Sea-lungwort
• MERTENSIA PANICULATA (Aiton) G. Don – Tall Lungwort, Tall Bluebells, Languid Ladies, Dangling Damsels
• MIMOSA NUTTALLII (DC.) B. L. Turner – Catclaw Brier, Sensitive Brier, Nuttall’s Sensitive Brier, Shame-boy, Devil’s Shoestrings
• MIRABILIS HIRSUTA (Pursh) MacMill. – Hairy Four O’clock, Hairy Umbrellawort
• MIRABILIS LINEARIS (Pursh) Heimerl – Narrowleaf Four O’Clock, Ribbon Four O’Clock
• MITELLA NUDA L. – Bishop’s-cap, Naked Mitrewort, Common Mitrewort, Bare-stemmed Mitrewort
• MONARDA PUNCTATA L. – Spotted Beebalm, Dotted Horsemint, Dotted Monarda
• MONOTROPA UNIFLORA L. – Indian-pipe, Ghost Plant, Corpse Plant
• MORELLA CERIFERA (L.) Small – Bayberry, Candleberry, Wax Myrtle
• MUSINEON DIVARICATUM (Pursh) Nutt. – Leafy Wildparsley, Musineon
• NYMPHAEA AMPLA (Salisb.) DC. – Dotleaf Waterlily
• OENOTHERA PALLIDA Lindl. – Pale Evening Primrose
• OLNEYA TESOTA A. Gray – Desert Ironwood, Ironwood Tree
• ONOSMODIUM BEJARIENSE var. OCCIDENTALE (Mack.) B. L. Turner – Western Marbleseed, False Gromwell
• OPHIOGLOSSUM VULGATUM L. – English Adder’s-tongue, Southern Adder’s-tongue
• OPLOPANAX HORRIDUS (Sm.) Miq. – Devil’s Club, Devil’s Walking Stick
• OROBANCHE FASCICULATA Nutt. – Clustered Broomrape, Bundled Broomrape
• OROBANCHE UNIFLORA L. – One-flowered Broomrape
• ORTHOCARPUS LUTEUS Nutt. – Yellow Owl’s-clover, Owl-clover
• OXALIS VIOLACEA L. – Violet Wood-sorrel, Sour Grass, Sour Trefoil, Shamrock
• OXYTROPIS PODOCARPA A. Gray – Inflated Oxytrope, Stalkpod Locoweed, Inflated Locoweed
• OXYTROPIS SERICEA Nutt. – Early Yellow Locoweed, Silky Locoweed, White Locoweed, White Point-vetch, Whitepoint Crazyweed, White Locoweed
• OXYTROPIS SPLENDENS Douglas – Showy Locoweed, Showy Crazyweed
• OXYTROPIS VISCIDA Torr. et A. Gray – Sticky Locoweed, Viscid Locoweed
• PACKERA CANA (Hook.) W. A. Weber et Á. Löve – Woolly Groundsel
• PARNASSIA FIMBRIATA K. D. Koenig – Fringed Grass-of-Parnassus
• PARNASSIA PALUSTRIS L. – Grass-of-Parnassus, Bog Star, Marsh Parnassia
• PARONYCHIA SESSILIFLORA Nutt. – Creeping Nailwort, Low Whitlow-wort
• PARTHENIUM HYSTEROPHORUS L. – Bitterweed, Carrot-grass, Santa Maria Feverfew
• PEDICULARIS VERTICILLATA L. – Whorled Lousewort
• PENSTEMON NITIDUS Douglas ex Benth. – Smooth Blue Beardtongue, Waxleaf Penstemon
• PETASITES FRIGIDUS (L.) Fr. – Arctic Sweet Coltsfoot, Northern Coltsfoot, Arctic Butterbur
• PHACELIA SERICEA (Graham) A. Gray – Silky Scorpionweed, Silky Phacelia, Blue Alpine Phacelia, Sky-pilot
• PHLOX HOODII Richardson – Moss Phlox, Spiny Phlox, Hood’s Phlox, Carpet Phlox
• PHYLLODOCE GLANDULIFLORA (Hook.) Coville – Yellow Mountain Heather, Yellow Heather
• PHYSALIS ALKEKENGI L. – Cape Gooseberry, Chinese Lantern, Winter Cherry
• PHYSARIA ARENOSA (Richardson) O’Kane et Al-Shehbaz – Sand Bladderpod, Great Plains Bladderpod
• PHYSARIA DIDYMOCARPA (Hook.) A. Gray – Double Bladderpod, Common Twinpod
• PHYTOLACCA AMERICANA L. – American Pokeweed, Common Pokeweed, Inkberry, Pigeonberry, Pokeroot
• PINGUICULA VULGARIS L. – Common Butterwort
• PINUS FLEXILIS E. James – Limber Pine
• PLEOPELTIS POLYPODIOIDES (L.) E. G. Andrews et Windham – Resurrection Fern
• POLEMONIUM PULCHERRIMUM Hook. – Showy Jacob’s-ladder, Beautiful Jacob’s-ladder, Skunk-leaved Polemonium
• POLYGALA SENEGA L. – Seneca Root, Seneca Snakeroot, Rattlesnake Root, Mountain Flax
• POLYPODIUM VULGARE L. – Common Polypody
• PONTEDERIA CORDATA L. – Pickerelweed
• POTENTILLA ARGUTA Pursh – Tall Cinquefoil, White Cinquefoil, Sticky Cinquefoil, Prairie Cinquefoil
• POTENTILLA CONCINNA Richardson – Elegant Cinquefoil, Early Cinquefoil
• POTENTILLA GRACILIS Douglas ex Hook. – Graceful Cinquefoil, Slender Cinquefoil
• POTENTILLA HIPPIANA Lehm. – Horse Cinquefoil, Woolly Cinquefoil, Hipp’s Cinquefoil
• POTENTILLA NIVEA L. – Snow Cinquefoil
• PRIMULA CUNEIFOLIA Ledeb. – Wedgeleaf Primrose
• PRIMULA INCANA M. E. Jones – Mealy Primrose, Silvery Primrose
• PROSARTES TRACHYCARPA S. Watson – Fairybells, Rough-fruited Fairy-bells, Rough-fruited Mandarin
• PROSOPIS VELUTINA Wooton – Velvet Mesquite, Native Mesquite, Arizona Mesquite
• PRUNUS PENSYLVANICA L. f. – Pin Cherry, Bird Cherry, Fire Cherry, Red Cherry
• PRUNUS VIRGINIANA L. – Chokecherry, Virginia Bird Cherry, Black Chokecherry
• PSEUDOTSUGA MENZIESII (Mirbel) Franco – Douglas-fir
• PTEROSPORA ANDROMEDEA Nutt. – Pinedrops, Albany Beechdrops, Giant Bird’s nest
• PULSATILLA OCCIDENTALIS (S. Watson) Freyn – Western Pasqueflower, Chalice-flower, Mountain Pasqueflower, White Pasqueflower
• PULSATILLA PATENS subsp. MULTIFIDA (Pritz.) Zämelis – Prairie Crocus, Pasque-flower
• PYRRHOPAPPUS CAROLINIANUS (Walter) DC. – Carolina Desert-chicory, Carolina False Dandelion
• PYRROCOMA LANCEOLATA (Hook.) Greene – Lance-leaved Ironplant, Lance-leaved Goldenweed
• QUERCUS VIRGINIANA Mill. – Live Oak, Bay live Oak, Scrub Live Oak, Plateau Oak, Escarpment Live Oak
• RANUNCULUS GLABERRIMUS var. ELLIPTICUS (Greene) Greene – Early Buttercup, Sagebrush Buttercup
• RHODIOLA INTEGRIFOLIA Raf. subsp. INTEGRIFOLIA – Roseroot, Ledge Stonecrop
• RHODIOLA ROSEA L. – King’s-crown, Roseroot, Rosewort
• RHODODENDRON KAMTSCHATICUM Pall. – Kamchatka Rhododendron
• ROSA ARKANSANA Porter – Prairie Rose, Wild Prairie Rose
• RUBUS TRIVIALIS Michx. – Southern Dewberry
• RUMEX VERTICILLATUS L. – Swamp Dock, Water Dock
• SABAL MINOR (Jacq.) Pers. – Dwarf Palmetto, Blue Palm, Blue Palmetto, Dwarf Palm, Little Blue Stem
• SAGITTARIA LATIFOLIA Willd. – Wapato, Common Arrowhead, Duck-potato, Broadleaf Arrowhead, Indian Potato
• SALIX EXIGUA Nutt. – Sandbar Willow, Narrowleaf Willow, Coyote Willow
• SALIX HERBACEA L. – Dwarf Willow, Snowbed Willow
• SALIX NIVALIS Hook. – Snow Willow
• SALVIA COCCINEA Buc’hoz ex Etl. – Scarlet Sage, Texas Sage, Tropical Sage, Blood Sage, Hummingbird Sage
• SANGUINARIA CANADENSIS L. – Bloodroot, Puccoon, Redroot
• SANGUISORBA OFFICINALIS L. – Great Burnet
• SANICULA MARILANDICA L. – Snake Root, Maryland Sanicle
• SARCODES SANGUINEA Torr. – Snow Plant, Snow Flower
• SAURURUS CERNUUS L. – Lizard’s Tail, Water Dragon, Swamp Root, Swamp Lily
• SAXIFRAGA FLAGELLARIS Willd. – Whiplash Saxifrage, Spider Saxifrage
• SAXIFRAGA OCCIDENTALIS S. Watson – Western Saxifrage, Alberta Saxifrage, Redwool Saxifrage
• SAXIFRAGA PANICULATA Miller – Livelong Saxifrage
• SCUTELLARIA INTEGRIFOLIA L. – Helmet Flower, Hissopleaf Skullcap, Helmet Skullcap, Hyssop Skullcap
• SEDUM ACRE L. – Wall Pepper
• SENECIO EREMOPHILUS Richardson – Cut-leaved Ragwort, Desert Ragwort
• SHEPHERDIA ARGENTEA (Pursh) Nutt. – Thorny Buffaloberry, Silver Buffalberry, Bull Berry
• SHEPHERDIA CANADENSIS (L.) Nutt. – Canadian Buffaloberry, Russet Buffaloberry, Soapberry, Foamberry, Soopolallie
• SILENE ACAULIS (L.) Jacq. – Moss Campion
• SISYRINCHIUM ROSULATUM E. P. Bicknell – Annual Blue-eyed Grass
• SISYRINCHIUM SEPTENTRIONALE E. P. Bicknell – Mountain Blue-eyed Grass, Northern Blue-eyed Grass
• SIUM SUAVE Walter – Hemlock Waterparsnip, Water Parsnip, Water Parsley
• SOLIDAGO MISSOURIENSIS Nutt. – Missouri Goldenrod, Prairie Goldenrod
• SOLIDAGO MULTIRADIATA Aiton – Rocky Mountain Goldenrod, Northern Goldenrod, Alpine Goldenrod
• SOLIDAGO SIMPLEX Kunth – Mountain Goldenrod, Decumbent Goldenrod, Mt. Albert Goldenrod
• SPHAERALCEA COCCINEA (Nutt.) Rydb. – Scarlet Globemallow, Scarlet Mallow
• SPIGELIA MARILANDICA L. – Woodland Pinkroot, Indian Pink
• SPIRANTHES ROMANZOFFIANA Cham. – Ladies‘-tresses, Hooded Ladies‘-tresses
• STACHYS PILOSA Nutt. – Marsh Hedgenettle, Hairy Hedgenettle
• STENOCEREUS THURBERI (Engelm.) Buxb. – Organpipe Cactus, Organ Pipe Cactus
• SYMPHORICARPOS ALBUS (L.) S. F. Blake – Snowberry, Common Snowberry, Waxberry, Ghostberry
• SYMPHORICARPOS OCCIDENTALIS Hook. – Buckbrush, Western Snowberry, Wolfberry
• SYMPHYOTRICHUM ERICOIDES (L.) G. L. Nesom – Heath Aster, White Aster, Tufted White Prairie Aster
• SYMPHYOTRICHUM LAEVE (L.) Á. Löve et D. Löve – Smooth Aster, Glaucus Aster
• SYMPHYOTRICHUM LANCEOLATUM (Willd.) G. L. Nesom – Western Willow Aster, Panicled Aster, Siskiyou Aster
• SYMPHYOTRICHUM NOVAE-ANGLIAE (L.) G. L. Nesom – New England Aster, Michaelmas Daisy, Hairy Michaelmas-daisy
• TAXODIUM DISTICHUM (L.) Rich. – Bald Cypress, Southern Cypress, White Cypress, Gulf Cypress, Swamp Cypress
• THALICTRUM VENULOSUM Trel. – Veiny Meadow-rue, Early Meadow-rue
• THERMOPSIS RHOMBIFOLIA (Nutt. ex Pursh) Richardson – Golden Bean, Buffalo Bean, Wet Tooth, Buffalo Flower, Prairie Thermopsis
• TILLANDSIA USNEOIDES (L.) L. – Spanish Moss, Long Moss, Black Moss, Old Man’s Beard
• TOWNSENDIA HOOKERI Beaman – Hooker’s Townsendia, Hooker’s Townsend Daisy
• TOWNSENDIA PARRYI D. C. Eaton – Parry’s Townsendia, Parry’s Townsend Daisy
• TRADESCANTIA VIRGINIANA L. – Virginia Spiderwort, Spiderwort, White Spiderwort, Widow’s Tears
• TRILLIUM GRANDIFLORUM (Michx.) Salisb. – White Trillium, Large-flowered Trillium
• TRILLIUM SESSILE L. – Sessile Trillium, Toad Trillium, Toadshade
• TRIODANIS PERFOLIATA (L.) Nieuwl. – Venus‘ Looking-glass, Clasping Venus‘ Looking-glass, Clasping Bellwort, Roundleaved Triodacnis
• UVULARIA GRANDIFLORA Sm. – Large-flowered Bellwort
• VALERIANA SITCHENSIS Bong. – Sitka Valerian, Mountain Heliotrope
• VIOLA ADUNCA Sm. – Early Blue Violet, Hookedspur Violet, Western Dog Violet, Sand Violet
• VIOLA CANADENSIS L. – Canada Violet, Western Canada Violet, Canadian White Violet, White Violet, Tall White Violet
• VIOLA NUTTALLII Pursh – Nuttall’s Violet, Yellow Prairie Violet
• VIOLA ORBICULATA Geyer ex Holz. – Evergreen Yellow Violet, Darkwoods Violet, Round-leaved Violet, Western Round-leaved Violet
• WALTHERIA INDICA L. – Uhaloa, Boaterbush, Sleepy-morning, Buff-coat
• XANTHISMA SPINULOSUM (Pursh) D. R. Morgan et R. L. Hartm. – Spiny Golden-aster, Lacy Tansy-aster, Cut-leaf Ironplant, Spiny Goldenweed
• YUCCA BREVIFOLIA Engelm. – Joshua Tree, Yucca
• YUCCA GLAUCA Nutt. – Yucca, Soapweed, Soapweed Yucca, Plains Yucca, Small Soapweed, Beargrass
• ZIGADENUS ELEGANS Pursh – Mountain Deathcamas, Death Camas, White Camas, Elegant Camas, Alkali Grass
• ZIGADENUS VENENOSUS S. Watson – Death Camas, Meadow Death Camas
• ZIZIA APTERA (A. Gray) Fernald – Heart-leaved Alexaders, Meadow Zizia, Meadow Parsnip