Additions and Name Changes to Michigan Flora
New Species added to the website from the 2016 field season (7 total)
Ampelamus laevis
Botrychium tenebrosum (split from B. simplex)
Crocosmia ×crocosmiiflora
Hypericum swinkianum (newly described split from H. kalmianum)
Liquidambar styraciflua
Microthlaspi perfoliatum
Rhamnus davurica
New Species added to the website from the 2015 field season (6 total)
Alchemilla mollis
Bothriochloa laguroides
Colchicum autumnale
Dioscorea polystachya
Eichhornia crassipes
Galanthus elwesii
Galium pedemontanum
Juncus validus
Nicotiana tabacum
Nymphoides peltata
Pistia stratiotes
New Species added to the website from the 2014 field season (11 total)
Allium carinatum
Chelone lyonii
Jasione montana
Juncus dichotomus
Juncus ranarius
Juncus pylaei
Luzula luzuloides
Rubus parvifolius
Senecio vernalis
Senecio viscosus
Tanacetum coccineum
New Species added to the website from the 2013 field season (6 total)
Elsholtzia ciliata
Hedera helix
Myriophyllum aquaticum
Picea pungens
Rubus phoenicolasius
Schoenoplectiella mucronata
New Species added to the website from the 2012 field season (27 total)
Acalypha ostryifolia
Agastache rugosa
Anemone blanda
Aralia spinosa
Artemisia serrata
Aronia arbutifolia
Arthraxon hispidus
Chenopodium polyspermum
Cyperus iria
Eranthis hyemalis
Eriochloa contracta
Euphorbia serpens
Exochorda racemosa
Geranium sibiricum
Hibiscus syriacus
Hydrocotyle ranunculoides
Iris ×vinicolor
Magnolia acuminata
Molinia caerulea
Napaea dioica
Nicotiana alata
Phyllostachys nigra
Pinus rigida
Spiraea nipponica
Spiraea prunifolia
Tripidium ravennae
Viburnum sieboldii
Additions and Name Changes to Michigan Flora, Volumes 1-3, in the "Field Manual"
Acalypha gracilens — add
Acer campestre — add
Acer ginnala — add
Acer nigrum — add (split from A. saccharum)
Acinos arvensis — Clinopodium acinos
Aconitum napellus — add
Acorus americanus — add (split from A. calamus)
Aegilops cylindrica — add
Agropyron cristatum — add
Agropyron dasystachyum — Elymus lanceolatus
Agropyron repens — Elymus repens
Agropyron smithii — Pascopyrum smithii
Agropyron spicatum — Pseudoroegneria spicata
Agropyron trachycaulum — Elymus trachycaulus
Agrostis scabra — add (split from A. hyemalis)
Agrostis tenuis — Agrostis capillaris
Aira caryophyllea — add
Alisma plantago-aquatica — delete (split into A. subcordatum & A. triviale)
Alisma subcordatum — add (split from A. plantago-aquatica)
Alisma triviale — add (split from A. plantago-aquatica)
Allium burdickii — add (split from A. tricoccum)
Allium tuberosum — add
Alnus crispa — Alnus viridis
Alnus rugosa — Alnus incana
Alopecurus geniculatus — add
Alopecurus myosuroides — add
Alyssum saxatile — Aurinia saxatilis
Amaranthus gracilis — Amaranthus viridis
Ampelopsis aconitifolia — add
Ampelopsis brevipedunculata — add
Andropogon scoparius — Schizachyrium scoparium
Anemonella thalictroides — Thalictrum thalictroides
Anthemis tinctoria — Cota tinctoria
Apera interrupta — add
Apera spica-venti — add
Arabis canadensis — Boechera canadensis
Arabis divaricarpa — Boechera grahamii
Arabis drummondii — Boechera stricta
Arabis glabra — Turritis glabra
Arabis hirsuta — Arabis pycnocarpa
Arabis holboellii — Boechera retrofracta
Arabis laevigata — Boechera laevigata
Arabis lyrata — Arabidopsis lyrata
Arabis missouriensis — Boechera missouriensis
Arabis perstellata — Boechera dentata
Aralia elata — add
Arenaria lateriflora — Moehringia lateriflora
Arenaria macrophylla — Moehringia macrophylla
Arenaria stricta — Minuartia michauxii
Aristolochia macrophylla — Isotrema macrophyllum
Aristolochia serpentaria — Endodeca serpentaria
Armoracia aquatica — Rorippa aquatica
Arnica lonchophylla — add
Aster borealis — Symphyotrichum boreale
Aster brachyactis — Symphyotrichum ciliatum
Aster ciliolatus — Symphyotrichum ciliolatum
Aster cordifolius — Symphyotrichum cordifolium
Aster dumosus — Symphyotrichum dumosum
Aster ericoides — Symphyotrichum ericoides
Aster furcatus — Eurybia furcata
Aster laevis — Symphyotrichum laeve
Aster lanceolatus — Symphyotrichum lanceolatum
Aster lateriflorus — Symphyotrichum lateriflorum
Aster longifolius — Symphyotrichum robynsianum
Aster macrophyllus — Eurybia macrophylla
Aster modestus — Canadanthus modestus
Aster nemoralis — Oclemena nemoralis
Aster novae-angliae — Symphyotrichum novae-angliae
Aster ontarionis — Symphyotrichum ontarionis
Aster oolentangiensis — Symphyotrichum oolentangiense
Aster paternus — Sericocarpus asteroides
Aster pilosus — Symphyotrichum pilosum
Aster praealtus — Symphyotrichum praealtum
Aster puniceus — Symphyotrichum puniceum
Aster sagittifolius — Symphyotrichum urophyllum
Aster sericeus — Symphyotrichum sericeum
Aster shortii — Symphyotrichum shortii
Aster solidagineus — Sericocarpus linifolius
Aster subulatus — Symphyotrichum subulatum
Aster umbellatus — Doellingeria umbellata
Atriplex prostrata — add (split from A. patula)
Barbarea stricta — add
Belamcanda chinensis — Iris domestica
Berberis repens — add
Betula murrayana — add
Betula populifolia — add
Bidens coronatus — Bidens trichosperma
Bouteloua gracilis — add
Brachyelytrum aristosum — add (split from B. erectum)
Brachypodium sylvaticum — add
Brassica alba — Sinapis alba
Brassica kaber — Sinapis arvensis
Bromus molliformis — delete (lump with B. hordeaceus )
Bromus mollis — Bromus hordeaceus
Bromus nottowayanus — add (split from B. pubescens)
Buchloe dactyloides — add
Cacalia atriplicifolia — Arnoglossum atriplicifolium
Cacalia plantaginea — Arnoglossum plantagineum
Calamagrostis inexpansa — delete (lump with C. stricta)
Calamagrostis lacustris — delete( lump with C. stricta)
Calamintha arkansana — Clinopodium arkansanum
Callitriche terrestris — add
Callitriche verna — Callitriche palustris
Caltha natans — add
Calylophus serrulatus — Oenothera serrulata
Calystegia hederacea — Calystegia pubescens
Calystegia macounii — add
Calystegia silvatica — add
Campanula americana — Campanulastrum americanum
Campanula latifolia — add
Cardaria draba — Lepidium draba
Cardaria pubescens — Lepidium appelianum
Carduus crispus — add
Carex acutiformis — add
Carex aenea — Carex foenea
Carex angustior — Carex echinata
Carex artitecta — Carex albicans
Carex assiniboinensis — add
Carex billingsii — add (split from C. trisperma)
Carex bushii — add
Carex cephalantha — Carex echinata
Carex conjuncta — add
Carex convoluta — Carex rosea
Carex duriuscula — add
Carex echinodes — add (split from C. tenera)
Carex emmonsii — Carex albicans
Carex foenea — Carex siccata
Carex grisea — add (split from C. amphibola)
Carex heleonastes — add
Carex howei — delete (lump with C. atlantica)
Carex inops — add (split from C. pensylvanica)
Carex lanuginosa — Carex pellita
Carex meadii — add (split from C. tetanica)
Carex muricata — add
Carex novae-angliae — add
Carex paupercula — Carex magellanica
Carex rosea — Carex radiata
Carex rugosperma — Carex tonsa
Carex sylvatica — add
Carex texensis — add
Carex tincta — add
Carex utriculata — add (split from C. rostrata)
Carex viridistellata — add (split from C. cryptolepis)
Carex wiegandii — add
Carthamus tinctorius — add
Cassia chamaecrista — Chamaecrista fasciculata
Cassia hebecarpa — Senna hebecarpa
Cassia nictitans — Chamaecrista nictitans
Cassia tora — Senna tora
Castanea mollissima — add
Caulophyllum giganteum — add (split from C. thalictroides)
Centaurea maculosa — Centaurea stoebe
Centaurea repens — Rhaponticum repens
Cerastium brachypodum — add (split from C. nutans)
Cerastium pumilum — add
Cerastium velutinum — add (split from C. arvense)
Chaenomeles speciosa — add
Chenopodium ambrosioides — Dysphania ambrosioides
Chenopodium aristatum — Dysphania aristata
Chenopodium berlandieri — add (split from C. album)
Chenopodium botrys — Dysphania botrys
Chenopodium hybridum — Chenopodium simplex
Chenopodium subglabrum — Chenopodium pratericola
Chorispora tenella — add
Chrysanthemum ×superbum — Leucanthemum ×superbum
Chrysanthemum balsamita — Tanacetum balsamita
Chrysanthemum leucanthemum — Leucanthemum vulgare
Chrysanthemum parthenium — Tanacetum parthenium
Chrysanthemum serotinum — Leucanthemella serotina
Chrysopsis camporum — Heterotheca camporum
Chrysopsis villosa — Heterotheca villosa
Cimicifuga racemosa — Actaea racemosa
Circaea lutetiana — Circaea canadensis
Claytonia sibirica — add
Clematis terniflora — add
Cleome hassleriana — Tarenaya hassleriana
Cleome serrulata — Peritoma serrulata
Coelorachis cylindrica — add
Coincya monensis — add
Consolida ambigua — Consolida ajacis
Corispermum americanum — add (split from C. hyssopifolium)
Corispermum orientale — Corispermum villosum
Corispermum pallasii — add (split from C. hyssopifolium)
Cornus stolonifera — Cornus sericea
Coronilla varia — Securigera varia
Corydalis sempervirens — Capnoides sempervirens
Corydalis solida — add
Corynephorus canescens — add
Cotinus coggygria — add
Cotoneaster adpressus — add
Cotoneaster divaricatus — add
Crataegus apiomorpha — Crataegus fluviatilis
Crataegus basilica — Crataegus schuettei
Crataegus beata — delete (lump with C. populnea)
Crataegus brumalis — delete (lump with C. macrosperma)
Crataegus compta — delete (lump with C. populnea)
Crataegus dilatata — Crataegus coccinioides
Crataegus disperma — delete
Crataegus filipes — delete (lump with C. jesupii)
Crataegus foetida — delete (lump with C. intricata)
Crataegus fontanesiana — delete (lump with C. crus-galli)
Crataegus gravis — delete (lump with C. populnea)
Crataegus hillii — Crataegus magniflora
Crataegus immanis — Crataegus compacta
Crataegus iracunda — delete (lump with C. populnea )
Crataegus leiophylla — delete (lump with C. pruinosa)
Crataegus levis — delete (lump with C. populnea)
Crataegus merita — delete (lump with C. macrosperma)
Crataegus nitidula — delete (lump with C. punctata)
Crataegus pedicellata — Crataegus coccinea
Crataegus pinguis — delete (lump with C. brainerdii)
Crataegus pringlei — Crataegus coccinea
Crataegus pringlei — delete (lump with C. coccinea)
Crataegus rugosa — delete (lump with C. pruinosa)
Cyperus aristatus — Cyperus squarrosus
Cyperus filiculmis — Cyperus lupulinus
Cyperus fuscus — add
Cyperus rivularis — Cyperus bipartitus
Cypripedium calceolus — Cypripedium parviflorum
Danthonia compressa — add
Daphne mezereum — add
Dentaria diphylla — Cardamine diphylla
Dentaria laciniata — Cardamine concatenata
Dentaria maxima — Cardamine maxima
Deschampsia flexuosa — Avenella flexuosa
Desmanthus illinoensis — add
Desmodium glabellum — add (split from D. paniculatum)
Desmodium glutinosum — Hylodesmum glutinosum
Desmodium nudiflorum — Hylodesmum nudiflorum
Desmodium perplexum — add (split from D. paniculatum)
Deutzia scabra — add
Diarrhena americana — Diarrhena obovata
Dichanthelium polyanthes — add
Disporum hookeri — Prosartes hookeri
Disporum maculatum — Prosartes maculata
Dodecatheon meadia — Primula meadia
Draba glabella — add
Duchesnea indica — Potentilla indica
Dysphania pumilio — add
Echinochloa esculenta — add (split from E. crusgalli)
Eleocharis atropurpurea — add
Eleocharis caribaea — Eleocharis geniculata
Eleocharis microcarpa — add
Eleocharis nitida — add
Eleocharis olivacea — Eleocharis flavescens
Eleocharis pauciflora — Eleocharis quinqueflora
Eleocharis smallii — Eleocharis palustris
Eleutherococcus sieboldianus — add
Elymus arenarius — Leymus arenarius
Elymus macgregorii — add (split from E. virginicus)
Elymus mollis — Leymus mollis
Epilobium angustifolium — Chamerion angustifolium
Epilobium brachycarpum — add
Eragrostis curvula — add
Eragrostis poaeoides — Eragrostis minor
Eragrostis tephrosanthes — delete (lump with E. pectinacea)
Eragrostis trichodes — add
Eriocaulon septangulare — Eriocaulon aquaticum
Eriophorum spissum — Eriophorum vaginatum
Erophila verna — Draba verna
Euonymus hamiltoniana — add
Eupatorium coelestinum — Conoclinium coelestinum
Eupatorium fistulosum — Eutrochium fistulosum
Eupatorium maculatum — Eutrochium maculatum
Eupatorium purpureum — Eutrochium purpureum
Eupatorium rugosum — Ageratina altissima
Euphorbia davidii — add (split from E. dentata)
Euphorbia esula — Euphorbia virgata
Euphorbia obtusata — Euphorbia spathulata
Euphorbia prostrata — add
Euthamia remota — Euthamia caroliniana
Fatoua villosa — add
Festuca arundinacea — Schedonorus arundinaceus
Festuca obtusa — Festuca subverticillata
Festuca octoflora — Vulpia octoflora
Festuca ovina — Festuca trachyphylla
Festuca pratensis — Schedonorus pratensis
Festuca scabrella — Festuca altaica
Festuca tenuifolia — Festuca filiformis
Ficus carica — add
Filago arvensis — Logfia arvensis
Filipendula ulmaria — add
Filipendula vulgaris — add
Forsythia ×intermedia — add
Frangula purshiana — add
Froelichia floridana — add
Froelichia gracilis — add
Fuirena squarrosa — Fuirena pumila
Galanthus nivalis — add
Galega officinalis — add
Galium mollugo — Galium album
Gaura biennis — Oenothera gaura
Gaura coccinea — Oenothera suffrutescens
Gaura longiflora — Oenothera filiformis
Gentianopsis procera — Gentianopsis virgata
Geranium aequale — add (split from G. molle)
Glyceria melicaria — add
Gnaphalium helleri — Pseudognaphalium micradenium
Gnaphalium macounii — Pseudognaphalium macounii
Gnaphalium obtusifolium — Pseudognaphalium obtusifolium
Gnaphalium purpureum — Gamochaeta purpurea
Gnaphalium sylvaticum — Omalotheca sylvatica
Habenaria blephariglottis — Platanthera blephariglottis
Habenaria ciliaris — Platanthera ciliaris
Habenaria clavellata — Platanthera clavellata
Habenaria dilatata — Platanthera dilatata
Habenaria flava — Platanthera flava
Habenaria hookeri — Platanthera hookeri
Habenaria hyperborea — delete (split into Platanthera aquilonis and P. huronensis)
Habenaria lacera — Platanthera lacera
Habenaria leucophaea — Platanthera leucophaea
Habenaria obtusata — Platanthera obtusata
Habenaria orbiculata — Platanthera orbiculata
Habenaria psycodes — Platanthera psycodes
Habenaria unalascensis — Platanthera unalascensis
Habenaria viridis — Coeloglossum viride
Haplopappus ciliatus — Grindelia ciliata
Hedyotis nigricans — Stenaria nigricans
Heleochloa schoenoides — Crypsis schoenoides
Helianthemum bicknellii — Crocanthemum bicknellii
Helianthemum canadense — Crocanthemum canadense
Hemicarpha micrantha — Lipocarpha micrantha
Heracleum mantegazzianum — add
Heracleum sphondylium — add
Hierochloë odorata — Hierochloë hirta
Holcus mollis — add
Hosta ventricosa — add
Hydrocharis morsus-ranae — add
Hylotelephium erythrostictum — add
Hymenoxys herbacea — Tetraneuris herbacea
Hypericum adpressum — add
Hystrix patula — Elymus hystrix
Iberis sempervirens — add
Ilex opaca — add
Iris sibirica — add
Isopyrum biternatum — Enemion biternatum
Isotrema tomentosum — add
Iva xanthiifolia — Cyclachaena xanthiifolia
Juncus alpinus — Juncus alpinoarticulatus
Juncus anthelatus — add (split from J. tenuis)
Juncus compressus — add
Juncus ensifolius — add
Kalopanax septemlobus — add
Kerria japonica — add
Kochia scoparia — Bassia scoparia
Kuhnia eupatorioides — Brickellia eupatorioides
Lactuca muralis — Mycelis muralis
Lactuca pulchella — Mulgedium pulchellum
Lamiastrum galeobdolon — add
Lamprocapnos spectabilis — add
Lechea villosa — Lechea mucronata
Ledum groenlandicum — Rhododendron groenlandicum
Lemna turionifera — add (split from L. minor)
Leontodon autumnalis — Scorzoneroides autumnalis
Leontodon taraxacoides — Leontodon saxatilis
Leptochloa fascicularis — Leptochloa fusca
Leptoloma cognatum — Digitaria cognata
Lespedeza bicolor — add
Lespedeza intermedia — Lespedeza violacea
Lespedeza stipulacea — Kummerowia stipulacea
Lespedeza thunbergii — add
Lespedeza violacea — Lespedeza frutescens
Leymus racemosus — add
Lilium martagon — add
Limonium platyphyllum — add
Linaria canadensis — Nuttallanthus canadensis
Listera auriculata — Neottia auriculata
Listera convallarioides — Neottia convallarioides
Listera cordata — Neottia cordata
Lithospermum arvense — Buglossoides arvensis
Luzula pallidula — add
Lychnis chalcedonica — Silene chalcedonica
Lychnis coronaria — Silene coronaria
Lycopersicon esculentum — Solanum lycopersicum
Mahonia aquifolium — Berberis aquifolium
Malus baccata — add
Malus prunifolia — add
Malus sieboldii — add
Malva crispa — Malva verticillata
Malva rotundifolia — Malva pusilla
Matricaria perforata — Tripleurospermum inodorum
Matricaria recutita — Matricaria chamomilla
Mazus reptans — Mazus miquelii
Megalodonta beckii — Bidens beckii
Mentha ×gracilis — add (given fuller treatment)
Mentha arvensis — Mentha canadensis
Minuartia dawsonensis — add (split from Arenaria stricta)
Mirabilis hirsuta — delete (lump with M. albida)
Miscanthus sacchariflorus — add
Miscanthus sinensis — add
Monarda clinopodia — add (split from M. fistulosa)
Monotropa hypopithys — Hypopitys monotropa
Muhlenbergia asperifolia — add
Muscari atlanticum — Muscari neglectum
Myosurus minimus — add
Myrica pensylvanica — add
Myriophyllum exalbescens — Myriophyllum sibiricum
Myrrhis odorata — add
Narcissus poeticus — add
Narcissus pseudonarcissus — add
Nasturtium microphyllum — add (split from N. officinale)
Nemopanthus mucronatus — Ilex mucronata
Nuphar pumila — Nuphar microphylla
Nymphaea tetragona — Nymphaea leibergii
Odontites vulgaris — Odontites vernus
Onosmodium molle — Lithospermum molle
Orchis rotundifolia — Amerorchis rotundifolia
Orchis spectabilis — Galearis spectabilis
Oryzopsis canadensis — Piptatherum canadense
Oryzopsis pungens — Piptatherum pungens
Oryzopsis racemosa — Piptatherum racemosum
Osmorhiza chilensis — Osmorhiza berteroi
Oxalis fontana — Oxalis stricta
Oxalis stricta — Oxalis dillenii
Pachysandra terminalis — add
Packera glabella — add
Packera insulae-regalis — add (split from Packera paupercula)
Panicum boreale — Dichanthelium boreale
Panicum calliphyllum — delete
Panicum clandestinum — Dichanthelium clandestinum
Panicum columbianum — Dichanthelium columbianum
Panicum commonsianum — Dichanthelium commonsianum
Panicum commutatum — Dichanthelium commutatum
Panicum depauperatum — Dichanthelium depauperatum
Panicum dichotomum — Dichanthelium dichotomum
Panicum gattingeri — add (split from P. philadelphicum)
Panicum implicatum — Dichanthelium implicatum
Panicum latifolium — Dichanthelium latifolium
Panicum leibergii — Dichanthelium leibergii
Panicum lindheimeri — Dichanthelium lindheimeri
Panicum linearifolium — Dichanthelium linearifolium
Panicum longifolium — add
Panicum meridionale — Dichanthelium meridionale
Panicum microcarpon — Dichanthelium microcarpon
Panicum oligosanthes — Dichanthelium oligosanthes
Panicum perlongum — Dichanthelium perlongum
Panicum praecocius — Dichanthelium praecocius
Panicum sphaerocarpon — Dichanthelium sphaerocarpon
Panicum spretum — Dichanthelium spretum
Panicum tuckermanii — add (split from P. philadelphicum)
Panicum xanthophysum — Dichanthelium xanthophysum
Papaver pseudo-orientale — add (split from P. orientale)
Parietaria diffusa — Parietaria judaica
Parthenium hispidum — delete (lump with P. integrifolium)
Paspalum ciliatifolium — Paspalum setaceum
Paspalum laeve — add
Pennisetum alopecuroides — add
Persicaria robustior — add
Phellodendron amurense — add
Philadelphus ×virginalis — add
Philadelphus coronarius — add
Philadelphus inodorus — add
Philadelphus pubescens — add
Phlox latifolia — add
Physalis pubescens — Physalis grisea
Picea abies — add
Pimpinella saxifraga — add
Pinus nigra — add
Pinus ponderosa — add
Pinus sylvestris — add
Plagiobothrys hirtus — Plagiobothrys figuratus
Platanthera aquilonis — add (split from Habenaria hyperborea)
Platanthera huronensis — add (split from Habenaria hyperborea)
Platanthera macrophylla — add (split from Habenaria orbiculata)
Poa arida — add
Poa canbyi — Poa secunda
Poa interior — add (split from P. nemoralis)
Polygonum amphibium — Persicaria amphibia
Polygonum arifolium — Persicaria arifolia
Polygonum careyi — Persicaria careyi
Polygonum cespitosum — Persicaria longiseta
Polygonum cilinode — Fallopia cilinodis
Polygonum convolvulus — Fallopia convolvulus
Polygonum cuspidatum — Fallopia japonica
Polygonum hydropiper — Persicaria hydropiper
Polygonum hydropiperoides — Persicaria hydropiperoides
Polygonum lapathifolium — Persicaria lapathifolia
Polygonum orientale — Persicaria orientalis
Polygonum pensylvanicum — Persicaria pensylvanica
Polygonum persicaria — Persicaria maculosa
Polygonum punctatum — Persicaria punctata
Polygonum sachalinense — Fallopia sachalinensis
Polygonum sagittatum — Persicaria sagittata
Polygonum scandens — Fallopia scandens
Polygonum virginianum — Persicaria virginiana
Polygonum viviparum — Bistorta vivipara
Polymnia uvedalia — Smallanthus uvedalia
Porteranthus stipulatus — Gillenia stipulata
Porteranthus trifoliatus — Gillenia trifoliata
Potamogeton capillaceus — Potamogeton bicupulatus
Potamogeton filiformis — Stuckenia filiformis
Potamogeton lateralis — delete
Potamogeton pectinatus — Stuckenia pectinata
Potamogeton vaginatus — delete (lump with Stuckenia filiformis)
Potamogeton vaginatus — Stuckenia filiformis
Potentilla arguta — Drymocallis arguta
Potentilla bipinnatifida — add
Potentilla canadensis — add (split from P. simplex)
Potentilla fruticosa — Dasiphora fruticosa
Potentilla intermedia — add (split from P. inclinata)
Potentilla palustris — Comarum palustre
Potentilla paradoxa — Potentilla supina
Potentilla pensylvanica — Potentilla litoralis
Potentilla tridentata — Sibbaldiopsis tridentata
Potentilla verna — add
Prenanthes crepidinea — add
Proboscidea louisiana — original spelling, not “louisianica”
Prosartes trachycarpa — add
Prunus alleghaniensis — Prunus umbellata
Prunus angustifolia — add
Prunus armeniaca — add
Prunus cerasifera — delete
Prunus hortulana — add
Pseudotsuga menziesii — add
Psilocarya scirpoides — Rhynchospora scirpoides
Psoralea psoralioides — Orbexilum pedunculatum
Puccinellia fernaldii — Torreyochloa fernaldii
Puccinellia pallida — Torreyochloa pallida
Pueraria montana — add
Pyrola rotundifolia — Pyrola americana
Pyrus calleryana — add
Pyrus cordata — add
Quercus coccinea — Quercus ellipsoidalis
Quercus prinus — Quercus montana
Quercus shumardii — add
Ranunculus cymbalaria — Halerpestes cymbalaria
Ranunculus ficaria — Ficaria verna
Ranunculus lapponicus — Coptidium lapponicum
Ranunculus sardous — add
Ranunculus trichophyllus — add (split from R. longirostris)
Rhamnus frangula — Frangula alnus
Rheum rhaponticum — Rheum ×hybridum
Rhexia mariana — add
Rhinanthus minor — add
Rhodotypos scandens — add
Rhynchospora glomerata — Rhynchospora recognita
Rhynchospora nitens — add
Ribes missouriense — add
Rosa canina — add
Rosa eglanteria — Rosa rubiginosa
Rosa virginiana — add
Rubus bifrons — add
Rubus caesius — add
Rumex maritimus — Rumex fueginus
Rumex occidentalis — add
Ruppia maritima — Ruppia cirrhosa
Ruta graveolens — add
Sagittaria cristata — add (split from S. graminea)
Salicornia europaea — Salicornia rubra
Salix atrocinerea — add
Salix matsudana — add
Salsola collina — add
Salsola kali — Salsola tragus
Sanguisorba minor — Poterium sanguisorba
Sanicula gregaria — Sanicula odorata
Saxifraga pensylvanica — Micranthes pensylvanica
Saxifraga virginiensis — Micranthes virginiensis
Schedonorus giganteus — add
Schoenoplectus purshianus — add (split from Scirpus smithii)
Schrankia nuttallii — Mimosa quadrivalvis
Scilla forbesii — add
Scilla luciliae — add
Scilla siberica — add
Scirpus acutus — Schoenoplectus acutus
Scirpus americanus — Schoenoplectus pungens
Scirpus atrocinctus — add (split from S. cyperinus)
Scirpus cespitosus — Trichophorum cespitosum
Scirpus clintonii — Trichophorum clintonii
Scirpus fluviatilis — Bolboschoenus fluviatilis
Scirpus georgianus — add (split from S. atrovirens)
Scirpus hallii — Schoenoplectus hallii
Scirpus hattorianus — add (split from S. atrovirens)
Scirpus heterochaetus — Schoenoplectus heterochaetus
Scirpus hudsonianus — Trichophorum alpinum
Scirpus olneyi — Schoenoplectus americanus
Scirpus paludosus — Bolboschoenus maritimus
Scirpus pedicillatus — add (split from S. cyperinus)
Scirpus smithii — Schoenoplectus smithii
Scirpus subterminalis — Schoenoplectus subterminalis
Scirpus torreyi — Schoenoplectus torreyi
Scirpus validus — Schoenoplectus tabernaemontani
Scleria reticularis — add
Sclerochloa dura — add
Sedum spurium — Phedimus spurius
Sedum telephium — Hylotelephium telephium
Senecio aureus — Packera aurea
Senecio congestus — Tephroseris palustris
Senecio indecorus — Packera indecora
Senecio obovatus — Packera obovata
Senecio pauperculus — Packera paupercula
Senecio plattensis — delete (lump with Packera paupercula)
Setaria glauca — Setaria pumila
Shepherdia argentea — add
Silene armeria — Atocion armeria
Silene dioica — add
Silene nivea — add
Silene pratensis — Silene latifolia
Sisyrinchium campestre — add
Sisyrinchium farwellii — Sisyrinchium fuscatum
Sisyrinchium hastile — delete (lump with S. albidum)
Smilacina racemosa — Maianthemum racemosum
Smilacina stellata — Maianthemum stellatum
Smilacina trifolia — Maianthemum trifolium
Smilax tamnoides — Smilax hispida
Solidago vossii — add (split from S. houghtonii)
Sparganium chlorocarpum — Sparganium emersum
Sparganium minimum — Sparganium natans
Spartina gracilis — add
Spiranthes casei — add (split from S. cernua)
Spiranthes magnicamporum — add (split from S. cernua)
Spiranthes ochroleuca — add (split from S. cernua)
Spiranthes ovalis — add
Spiranthes tuberosa — add
Spiranthes vernalis — delete
Sporobolus asper — Sporobolus compositus
Sporobolus clandestinus — add
Sporobolus indicus — add
Stachys arenicola — add (split from S. palustris)
Stachys aspera — add (split from S. tenuifolia)
Stachys byzantina — add
Stachys hispida — add (split from S. tenuifolia)
Stachys pilosa — add (split from S. palustris)
Stellaria calycantha — Stellaria borealis
Stellaria pallida — add
Stipa avenacea — Piptochaetium avenaceum
Stipa comata — Hesperostipa comata
Stipa spartea — Hesperostipa spartea
Streptopus roseus — Streptopus lanceolatus
Symphyotrichum drummondii — add
Symphyotrichum firmum — add (split from Aster puniceus)
Syringa ×henryi — add
Syringa reticulata — add
Tanacetum huronense — Tanacetum bipinnatum
Taraxacum palustre — add
Taxodium distichum — add
Taxus cuspidata — add
Teesdalia nudicaulis — add
Thalictrum pubescens — add
Thaspium barbinode — Thaspium chapmanii
Thymus pannonicus — Thymus albidus
Tofieldia glutinosa — Triantha glutinosa
Tomanthera auriculata — Agalinis auriculata
Toxicodendron rydbergii — add (split from T. radicans)
Trillium cuneatum — add (split from Trillium viride)
Trillium luteum — add (split from Trillium viride)
Trillium viride — delete (split into T. cuneatum & T. luteum)
Trisetum melicoides — Graphephorum melicoides
Ulmus glabra — add
Uniola latifolia — Chasmanthium latifolium
Verbena canadensis — Glandularia canadensis
Veronica hederifolia — add
Viburnum trilobum — add (split from V. opulus)
Vicia lathyroides — add
Vigna unguiculata — add
Vinca major — add
Viola conspersa — Viola labradorica
Viola novae-angliae — add
Viola primulifolia — add
Vulpia myuros — add
Waldsteinia fragarioides — Geum fragarioides
Wolffia brasiliensis — add
Wolffia punctata — Wolffia borealis
Yucca flaccida — add (split from Y. filamentosa)
Zigadenus glaucus — Anticlea elegans
Zizania palustris — add (split from Z. aquatica)