Flora & Fauna

Vegetation

Vegetation Species

COMMON NAME SCIENTIFIC NAME
slender copperleaf Acalypha gracilens
red maple Acer rubrum
swamp red maple Acer rubrum var. drummundii
creeping spotflower Acmella oppositifolia
oppositeleaf spotflower Acmella repens
false foxglove Agalinis fasciculata
gerardia ridge-stem Agalinis heterophylla
false foxglove Agalinis oligophylla
gren false foxglove Agalinis viridis
winter bentgrass Agrostis hyemalis
crowpoison Allium bivalve
wild onion Allium canadense
alligator weed Alternanthera philoxeroides
common ragweed Ambrosia angustifolius
annual ragweed Ambrosia artemisiifolia
western ragweed Ambrosia cumanensis
western ragweed Ambrosia psilostachya
giant ragweed Ambrosia trifida var. texana
toothcup Ammannia coccinea
sand-parsley Ammoselinum butleri
peppervine Ampelopsis arborea
eastern slimpod Amsonia tabernaemontana
scarlet pimpernel Anagallis arvensis
chaffweed Anagallis minima
big bluestem Andropogon gerardii
bushy bluestem Andropogon glomeratus
broomsedge bluestem Andropogon virginicus
tenpetal anemone Anemone berlandieri
purple silkyscale Anthaenantia rufa
fennel Anthemis cotula
slimspike threeawn grass Aristida longespica var. longespica
prairie three-awn Aristida oligantha
arrowfeather three-awn Aristida purpurascens
Wright's three-awn Aristida wrightii
lanceleaf indian plantain Arnoglossum ovatum
groovestem Indian plantain Arnoglossum plantagineum
giant cane Arundinaria gigantea
milkweed Asclepias sp.
antelope horn Asclepias viridis
ebony spleenwort Asplenium platyneuron
rice button aster Aster dumosus
spiny chloracantha Aster spinosus
common carpetgrass Axonopus affinis
Southern Carpetgrass Axonopus fissifolius
Big Carpetgrass Axonopus furcatus
Southern carpet grass Axonpus affinis
Carolina mosquitofern Azolla caroliniana
Eastern false willow Baccharis halimifolia
Rooseveltweed Baccharis neglecta
coastal water-hyssop Bacopa monnieri
disk water-hyssop Bacopa rotundifolia
nodding wild-indigo Baptisia bracteata
erect wild-indigo Baptisia sphaerocarpa
rattan-vine Berchemia scandens
river birch Betula nigra
begger tick Bidens sp.
rayless goldenrod Bigelowia nuttallii
false nettle Boehmeria cylindrica
smallhead boltonia Boltonia diffusa
King Ranch bluestem Bothriochloa ischaemum
water-shield Brasenia schreberi
little quaking grass Briza minor
rescue grass Bromus catharticus
paper mulberry Broussonetia papyrifera
Carolina fanwort Cabomba caroliniana
American beauty-berry Callicarpa americana
wine-cup Callirhoe involucrata
larger water-starwort Callitriche heterophylla
Nuttall's water-starwort Callitriche pedunculosa
prostrate lawnflower Calyptocarpus vialis
trumpet creeper Campsis radicans
golden canna Canna flaccida
bitter-cress Cardamine debilis
common balloon-vine Cardiospermum halicacabum
yellow-fruit sedge Carex annectens
Carolina sedge Carex caroliniana
cherokee sedge Carex cherokeensis
hirsute sedge Carex complanata
ravenfoot sedge Carex crus-corvi
white edge sedge Carex debilis
Emory's sedge Carex emoryi
thin-fruit sedge Carex flaccosperma
Frank's sedge Carex frankii
southern sedge Carex glaucescens
bladder sedge Carex intumescens
cypress swamp sedge Carex joorii
narrowleaf sedge Carex leavenworthii
greenish-white sedge Carex longii
Louisiana sedge Carex louisianica
false hop sedge Carex lupuliformis
hop sedge Carex lupulina
prairie sedge Carex meadii
sedge Carex retroflexa
warty sedge Carex verrucosa
American hornbeam Carpinus caroliniana
water hickory Carya aquatica
pecan Carya illinoinensis
Indian paintbrush Castilleja indivisa
sugarberry Celtis laevigata
hackberry Celtis occidentalis
centaury Centaurium pulchellum
spadeleaf Centella erecta
butterfly pea Centrosema virginianum
buttonbush Cephalanthus occidentalis
mouse-eared chickweed Cerastium glomeratum
coontail Ceratophyllum demersum
chervil Chaerophyllum tainturieri
partridge pea Chamaecrista fasciculata
spotted spurge Chamaesyce maculata
eyebane Chamaesyce nutans
muskgrass Chara sp.
broadleaf woodoats Chasmanthium latifolium
spikegrass Chasmanthium laxum var. laxum
spikegrass Chasmanthium laxum var. sessiliflorum
longleaf woodoats Chasmanthium sessiliflorum
fringe tree Chionanthus virginicus
fringed windmill grass Chloris ciliata
Rhodes grass Chloris gayana
bull thistle Cirsium horridulum
Jamaica swamp sawgrass Cladium jamaicense
clematis Clematis sp.
Browne's savory Clinopodium brownei
Texas bull-nettle Cnidoscolus texanus
wrinkled jointgrass Coelorachis rugosa
spreading dayflower Commelina diffusa
erect dayflower Commelina erecta
blue mistflower Conoclinium coelestinum
horseweed Conyza canadensis
goldenwave Coreopsis tinctoria
rough-leaf dogwood Cornus drummondii
stiff dogwood Cornus foemina
water pygmy-weed Crassula aquatica
cockspur hawthorn Crataegus crus-galli
parsley hawthorn Crataegus marshallii
little hip hawthorn Crataegus spathulata
green hawthorn Crataegus viridis
swamp lily Crinum americanum
wooly croton Croton capitatus
tropical croton Croton glandulosus
prairie tea Croton monanthogynus
rushfoil Croton willdenowii
dodder Cuscuta compacta
dodder Cuscuta indecora
swamp hornpod Cynoctonum sessilifolium
bermuda grass Cynodon dactylon
taperleaf sedge Cyperus acuminatus
jointed flatsedge Cyperus articulatus
poorland flatsedge Cyperus compressus
Baldwin flatsedge Cyperus croceus
finger sedge Cyperus digitatus
flatsedge Cyperus entrerianus
sheathed flatsedge Cyperus haspan
umbrella plant Cyperus involucratus
ricefield flatsedge Cyperus iria
rusty sedge Cyperus odoratus
marsh sedge Cyperus pseudovegetus
retrose flatsedge Cyperus retrorsus
green flatsedge Cyperus virens
southern leatherwood Cyrilla racemiflora
crowfootfrass Dactyloctenium aegyptium
Illinois bundleflower Desmanthus illinoensis
needle-leaf witchgrass Dichanthelium aciculare
panic grass Dichanthelium acuminatum
variable witchgrass Dichanthelium commutatum
cypress witchgrass Dichanthelium dichotomum
broadleaf rosette grass Dichanthelium latifolium
lax flower witchgrass Dichanthelium laxiflorum
Heller's rosette grass Dichanthelium oligosanthes
velvet witchgrass Dichanthelium scoparium
roundseed panicgrass Dichanthelium sphaerocarpon
whitehair rosette grass Dichanthelium villosissimum var. villosissimum
Kleberg bluestem Dichanthium annulatum
Angleton bluestem Dichanthium aristatum
grass ponyfoot Dichondra carolinensis
Asian ponysfoot Dichondra micrantha
starrush whitetop Dichromena colorata
southern crabgrass Digitaria ciliaris
rough buttonweed Diodia teres
Virginia buttonweed Diodia virginiana
common persimmon Diospyros virginiana
clasping-leaf coneflower Dracopis amplexicaulis
annual sundew Drosera brevifolia
purple coneflower Echinacea sanguinea
gulf barnyard grass Echinochloa crus-pavonis
coast cockspur Echinochloa walteri
burhead Echinodorus cordifolius
false daisy Eclipta prostrata
elodea Egeria densa
water-wort Elatine brachysperma
spikerush Eleocharis equisetoides
smallseed spikerush Eleocharis microcarpa
small spikerush Eleocharis minima
mountain spikerush Eleocharis montana
sand spikerush Eleocharis montevidensis
dwarf spikerush Eleocharis parvula
squarestem spikerush Eleocharis quadrangulata
elephantfoot Elephantopus carolinianus
virginia wildrye Elymus virginicus
horsetail Equisetum hyemale
lovegrass Eragrostis arilodiae
Elliott's lovegrass Eragrostis elliottii
big-top lovegrass Eragrostis hirsuta
coastal lovegrass Eragrostis refracta
burnweed Erechtites hieraciifolia
sugarcane plumegrass Erianthus giganteus
narrow plumegrass Erianthus strictus
Philadelphia fleabane Erigeron philadelphicus
slender fleabane Erigeron tenuis
creeping eryngo Eryngium prostratum
rattlesnake-master Eryngium yuccifolium
coral bean Erythrina herbacea
strawberry-bush Euonymus americanus
dog-fennel Eupatorium capillifolium
mist flower Eupatorium coelestinum
yankeeweed Eupatorium compositifolium
lanceleaf thoroughwort Eupatorium lancifolium
Morh's thoroughwort Eupatorium mohrii
common boneset Eupatorium perfoliatum
roundleaf thoroughwort Eupatorium rotundifolium
smallflower thoroughwort Eupatorium semiserratum
late-flowering boneset Eupatorium serotinum
snow-on-the-prairie Euphorbia bicolor
spurge Euphorbia spathulata
Tennessee Aster Eurybia hemispherica
fourspike fingergrass Eustachys neglecta
pinewoods fingergrass Eustachys petraea
flat-top goldentop Euthamia graminifolia
flattop goldenrod Euthamia gymnospermoides
bushy fragrant goldenrod Euthamia leptocephala
silver dwarf morningglory Evolvulus sericeus
annual trampweed Facelis retusa
annual fimbry Fimbristylis annua
slender fimbry Fimbristylis autumnalis
Carolina fimbry Fimbristylis caroliniana
grasslike fimbry Fimbristylis miliacea
hairy fimbry Fimbristylis puberula
swamp privet Forestiera acuminata
green ash Fraxinus pennsylvanica
umbrella sedge Fuirena sp.
indian blanket Gaillardia pulchella
catchweed bedstraw Galium aparine
marsh bedstraw Galium tinctorium
purple cudweed Gamochaeta purpurea
Drummond's beeblossom Gaura drummondii
gaura Gaura lindheimeri
beeblossom Gaura longiflora
yellow jessamine Gelsemium sempervirens
Carolina geranium Geranium carolinianum
spotted geranium Geranium maculatum
moss verbena Glandularia pulchella
sticky hedge hyssop Gratiola brevifolia
yellow hedge hyssop Gratiola flava
clammy hedge hyssop Gratiola neglecta
roundfruit hedge hyssop Gratiola virginiana
mock pennyroyal Hedeoma hispida
Bosc's bluet Hedyotis boscii
five-leaf sneezeweed Helenium amarum
purple-headed sneezeweed Helenium flexuosum
Georgia frostweed Helianthemum georgianum
swamp sunflower Helianthus angustifolius
common sunflower Helianthus annuus
Maximilian sunflower Helianthus maximiliani
Herberta Herbertia lahue spp. caerulea
camphorweed Heterotheca subaxillaris
halberd-leaf rosemallow Hibiscus laevis
swamp rosemallow Hibiscus moscheutos
little barley Hordeum pusillum
tiney bluet Houstonia pusilla
waterthyme Houstonia pusilla
largeleaf pennywort Hydrocotyle bonariensis
manyflower marsh pennywort Hydrocotyle umbellata
whorled pennywort Hydrocotyle verticillata
hairy water-leaf Hydrolea ovata
smooth water-leaf Hydrolea uniflora
lake acanthus Hygrophila lacustris
spider-lily Hymenocallis liriosme
roundpod St. Johnswort Hypericum cistifolium
St. Peter's wort Hypericum crux-andreae
St. John's wort Hypericum drummondii
velvet panic grass Hypericum fasciculatum
claspingleaf St. John's wort Hypericum gymnanthum
St. Andrew's cross Hypericum hypericoides
dwarf St. John's wort Hypericum mutilum
catsear Hypochaeris microcephala
yellow stargrass Hypoxis wrightii
cluster bushmint Hyptis alata
dahoon Ilex cassine
possum haw Ilex decidua
american holly Ilex opaca
yaupon Ilex vomitoria
saltmarsh morning glory Ipomoea sagittata
shortstem iris Iris brevicaulis
yellow flag (iris) Iris pseudacorus
southern blue flag Iris virginica
keeled bulrush Isolepis carinata
Virginia willow Itea virginica
narrowleaf sumpweed Iva angustifolia
sharp-bracted sumpweed Iva annua
tapertip rush Juncus acuminatus
jointleaf rush Juncus articulatus
white-root rush Juncus brachycarpus
toad rush Juncus bufonius
leathery rush Juncus coriaceus
forked rush Juncus dichotomus
slimpod rush Juncus diffusissimus
soft rush Juncus effusus
inland rush Juncus interior
grassleaf rush Juncus marginatus
rush Juncus nodatus
knotted rush Juncus nodosus
many-head rush Juncus polycephalus
creeping rush Juncus repens
slender rush Juncus tenuis
round-head rush Juncus validus
lance-leaf waterwillow Justicia ovata var. lanceolata
ratany Krameria lanceolata
dwarf dandelion Krigia caespitosa
dwarf dandelion Krigia occidentalis
Japanese clover Kummerowia striata
fragrant flatsedge Kyllinga odorata
Dotted duckmeat Landoltia punctata
lantana Lantana camara
low peavine Lathyrus pusillus
hairy pinweed Lechea mucronata
clubhead cutgrass Leersia hexandra
whitegrass Leersia virginica
lesser duckweed Lemna aequinoctialis
common duckweed Lemna minor
duckweed Lemna spp.
baresoil peppergrass Lepidium densiflorum
pepper-grass Lepidium virginicum
bearded sprangletop Leptochloa fascicularis
redtop sprangle grass Leptochloa mucronata
southern lepuropetalon Lepuropetalon spathulatum
narrowleaf paleseed Leucospora multifida
sharp gayfeather Liatris acidota
coastal gayfeather Liatris bracteata
Kansas gayfeather Liatris pycnostachya
wax-leaf ligustrum Ligustrum quihoui
Chinese privet Ligustrum sinense
common frogbit Limnobium spongia
Ozarkgrass Limnodea arkansana
limnophila Limnophila sessiliflora
Malaysian false-pinpernel Lindernia crustacea
false pimpernel Lindernia dubia
flax Linum imbricatum
sucker flax Linum medium var. texanum
sweet gum Liquidambar styraciflua
earflower lobelia Lobelia appendiculata
cardinal flower Lobelia cardinalis
downy lobelia Lobelia puberula
perennial ryegrass Lolium perenne
honeysuckle Lonicera japonica
wingleaf primrose-willow Ludwigia decurrens
cylindricfruited seedbox Ludwigia glandulosa
large-flower primrose-willow Ludwigia grandiflora
narrow-leaf seedbox Ludwigia linearis
Mexican seedbox Ludwigia octovalvis
American seedbox Ludwigia palustris
smooth water primrose Ludwigia peploides
roundleaf seedbox Ludwigia repens
taperleaf bugleweed Lycopus rubellus
Virginia water horehound Lycopus virginicus
Japanese climbing fern Lygodium japonicum
winged loosestrife Lythrum alatum var. lanceolatum
low loosestrife Lythrum ovalifolium
loosestrife Lythrum spp.
machaeranthera Machaeranthera aurea
southern magnolia Magnolia grandiflora
sweetbay Magnolia virginiana
turk's cap Malvaviscus arboreus var. drummondii
false aloe Manfreda virginica
purple mecardonia Mecardonia acuminata
baby jump-up Mecardonia procumbens
baby jump-up Mecardonia vandellioides
black medic Medicago lupulina
Indian sweetclover Melilotus indicus
mudflower Micranthemum umbrosum
climbing hempvine Mikania scandens
sensitive briar Mimosa hystricina
Kairn's sensitive-briar Mimosa latidens
littleleaf sensitive-briar Mimosa microphylla
Nuttall's sensitive-briar Mimosa nuttallii
herbaceous mimosa Mimosa strigillosa
partridge-berry Mitchella repens
hornpod Mitreola petiolata
Carolina bristlemallow Modiola caroliniana
Indian chickweed Mollugo verticillata
lemon beebalm Monarda citriodora
red mulberry Morus rubra
hairyawn muhly Muhlenbergia capillaris
Lindheimer's muhly Muhlenbergia lindheimeri
wax myrtle Myrica cerifera
Dwarf bayberry Myrica pusilla
twoleaf watermilfoil Myriophyllum heterophyllum
green parrot's feather Myriophyllum pinnatum
naiads Najas guadalupensis
lotus Nelumbo lutea
sacred lotus Nelumbo nucifera
yellow puff Neptunia lutea
tropical neptunia Neptunia pubescens
false garlic Nothoscordum bivalve
spatterdock Nuphar luteum
blue water-lily Nymphaea elegans
yellow water-lily Nymphaea mexicana
fragrant white water-lily Nymphaea odorata
water tupelo Nyssa aquatica
swamp tupelo Nyssa biflora
black gum Nyssa sylvatica var. biflora
cutleaf evening-primrose Oenothera laciniata
sundrops Oenothera linifolia
Mexican primrose Oenothera speciosa
sensitive fern Onoclea sensibilis
basketgrass Oplismenus hirtellus
goldenclub Orontium aquaticum
cinnamon fern Osmunda cinnamomea
hophornbeam Ostrya virginiana
sourgrass Oxalis corniculata
pink woodsorrel Oxalis debilis var. corymbosa
slender yellow woodsorrel Oxalis dillenii
hogfennel Oxypolis filiformis
cutleaf groundsel Packera tampicanus
palafoxia Palafoxia rosea
beaked panicum Panicum anceps
Berg's panicgrass Panicum bergii
prairie panicum Panicum brachyanthum
fall panic grass Panicum dichotomiflorum
savannah-panicgrass Panicum gymnocarpon
maidencane Panicum hemitomon
gaping panicum Panicum hians
torpedograss Panicum repens
redtop panicum Panicum rigidulum
warty panicgrass Panicum verrucosum
switchgrass Panicum virgatum
Jerusalem-thorn Parkinsonia aculeata
5-leaf Virginia creeper Parthenocissus quinquefolia
dallis grass Paspalum dilatatum
mudbank paspalum Paspalum dissectum
Florida paspalum Paspalum floridanum
field paspalum Paspalum laeve
rusty-seed paspalum Paspalum langei
longtom Paspalum lividum
bahia grass Paspalum notatum
brownseed paspalum Paspalum plicatulum
early paspalum Paspalum praecox
thin paspalum Paspalum setaceum
vasey grass Paspalum urvillei
fetid passionflower Passiflora foetida
passion-flower Passiflora incarnata
Virginia arrowarum Peltandra virginica
redbay Persea borbonia
Carolina canarygrass Phalaris caroliniana
savannah panicum Phanopyrum gymnocarpon
common frog-fruit Phyla nodiflora
Carolina leafflower Phyllanthus caroliniensis
birdseed leafflower Phyllanthus pudens
peewater leafflower Phyllanthus urinaria
ground-cherry Physalis cinerascens var. cinerascens
slender dragonhead Physostegia intermedia
obedient plant Physostegia praemorsa
blunt dragonhead Physostegia virginiana spp. praemorsa
pokeweed Phytolacca americana
loblolly pine Pinus taeda
silkgrass Pityopsis graminifolia
slender plantain Plantago elongata
slender plantain Plantago heterophylla
pale-seed plantain Plantago virginica
sycamore Platanus occidentalis
camphor pluchea Pluchea camphorata
stinking pluchea Pluchea foetida
sweetscent Pluchea odorata
rosy camphorweed Pluchea rosea
bluegrass Poa annua
swamp smartweed Polygonum hydropiperoides
pale smartweed Polygonum lapathifolium
Pennsylvania smartweed Polygonum pensylvanicum
dotted smartweed Polygonum punctatum
rabbitfoot grass Polypogon monspeliensis
juniperleaf Polypremum procumbens
trifoliate orange Poncirus trifoliata
pickerelweed Pontederia cordata
eastern cottonwood Populus deltoides
pondweed Potamogeton diversifolius
marsh mermaidweed Proserpinaca palustris
self-heal Prunella vulgaris
wafer-ash Ptelea trifoliata
bracken fern Pteridium aquilinum
mock bishop weed Ptilimnium capillaceum
whiteleaf mountain mint Pycnanthemum albescens
false dandelion Pyrrhopappus pauciflorus
white oak Quercus alba
blackjack oak Quercus emoryi
southern red oak Quercus falcata
laurel oak Quercus laurifolia
overcup oak Quercus lyrata
blackjack oak Quercus marilandica
swamp chestnut oak Quercus michauxii
chinkapin oak Quercus muehlenbergii
water oak Quercus nigra
willow oak Quercus phellos
Shumard oak Quercus shumardii
bottomland post oak Quercus similis
post oak Quercus stellata
live oak Quercus virginiana
early buttercup Ranunculus fascicularis
low spearwort Ranunculus pusillus
Houston Camphor Daisy Rayjacksonia aurea
Maryland meadowbeauty Rhexia mariana var. mariana
winged sumac Rhus copallinum
anglestem beakrush Rhynchospora caduca
white-topped sedge Rhynchospora colorata
horned beak-rush Rhynchospora corniculata
spreading beakrush Rhynchospora divergens
Elliott's beakrush Rhynchospora elliottii
glove beakrush Rhynchospora globularis
cluster beak-rush Rhynchospora glomerata
nodding beakrush Rhynchospora inexpansa
pineland beakrush Rhynchospora perplexa
tropical Mexican-clover Richardia brasiliensis
Macartney rose Rosa bracteata
toothcup Rotala ramosior
blackberry Rubus argutus
field blackberry Rubus arvensis
dewberry Rubus trivialis
black-eyed Susan Rudbeckia hirta
shiny cone-flower Rudbeckia nitida
Texas coneflower Rudbeckia texana
ruellia Ruellia humilis
limestone wild petunia Ruellia strepens
curly dock Rumex crispus
fiddle dock Rumex pulcher
dwarf palmetto Sabal minor
prairie rose-gentian Sabatia campestris
narrow plumegrass Saccharum baldwinii
sugarcane plumegrass Saccharum giganteum
pearlwort Sagina decumbens
grassy arrowhead Sagittaria graminea
bulltongue arrowhead Sagittaria lancifolia
broadleaf arrowhead Sagittaria latifolia
longlobe arrowhead Sagittaria longiloba
nipplebract arrowhead Sagittaria papillosa
delta arrowhead Sagittaria platyphylla
black willow Salix nigra
azure blue sage Salvia azurea
lyre-leaf sage Salvia lyrata
water spangles Salvinia minima
elderberry Sambucus canadensis
pitcherplant Sarracenia alata
lizzard's tail Saururus cernuus
shepherdsneedle Scandix pecten-veneris
little bluestem Schizachyrium scoparium
California bulrush Schoenoplectus californicus
softstem bulrush Schoenoplectus tabernaemontani
California bulrush Scirpus californicus
woolgrass Scirpus cyperinus
gulf coast bulrush Scirpus molestus
Baldwin's nutrush Scleria baldwinii
fringed nutrush Scleria ciliata
littlehead nutrush Scleria oligantha
fewflower nutrush Scleria pauciflora
whip nutrush Scleria triglomerata
sweet broomwort Scoparia dulcis
Drummond's skullcap Scutellaria drummondii
hyssop skullcap Scutellaria integrifolia
early skullcap Scutellaria parvula
Gulf Sebastian-bush Sebastiania fruticosa
groundsel Senecio vulgaris
Drummond rattlebush Sesbania drummondii
hemp sesbania Sesbania exaltata
bigpod sesbania Sesbania herbacea
bag-pod sesbania Sesbania vesicaria
knotroot bristlegrass Setaria parviflora
fieldmadder Sherardia arvensis
bracted franpetals Sida ciliaris
arrowleaf sida Sida rhombifolia
gum bumelia Sideroxylon lanuginosum
sleepy catchfly Silene antirrhina
Simpson rosinweed Silphium gracile
pointed blue-eyed-grass Sisyrinchium angustifolium
blue-eyed-grass Sisyrinchium langloisii
blue-eyed-grass Sisyrinchium sagittiferum
saw greenbriar Smilax bona-nox
cat greenbrier Smilax glauca
common greenbriar Smilax rotundifolia
lanceleaf greenbrier Smilax smallii
woody nightshade Solanum capsicastrum
Carolina horse-nettle Solanum carolinense
silverleaf nightshade Solanum elaeagnifolium
common nightshade Solanum ptycanthum
common goldenrod Solidago canadensis
wringled goldenrod Solidago rugosa
seaside goldenrod Solidago sempervirens
Mutis' burrweed Soliva mutisii
burrweed Soliva sessilis
prickly sow-thistle Sonchus asper
indiangrass Sorghastrum nutans
Johnson grass Sorghum halepense
burreed Sparganium androcladum
saltmeadow cordgrass Spartina patens
prairie cordgrass Spartina pectinata
gulf cordgrass Spartina spartinae
sphagnum Sphagnum spp.
chicken-spike Sphenoclea zeylanica
wedgescale Sphenopholis intermedia
prairie wedgescale Sphenopholis obtusata
nodding ladies tresses Spiranthes cernua
spring ladies'-tresses Spiranthes vernalis
dotted duckweed Spirodela punctata
dropseed Sporobolus clandestinus
smutgrass Sporobolus indicus
whorled dropseed Sporobolus pyramidatus
shade hedgenettle Stachys crenata
gaping grass Steinchisma hians
chickweed Stellaria media
diamondflowers Stenaria nigricans var.nigricans
St. Augustine Grass Stenotaphrum secundatum
pink wildbean Strophostyles umbellata
styrax Styrax americanus
bushy aster Symphyotrichum dumosum
aster Symphyotrichum lateriflorum
blueflower aster Symphyotrichum subulatum
horsesugar Symplocos tinctoria
bald cypress Taxodium distichum
American germander Teucrium canadense
fire flag Thalia dealbata
poison ivy Toxicodendron radicans
climbing dogbane Trachelospermum difforme
Chinese tallow Triadica sebifera
bluecurls Trichostema dichotomum
purpletop tridens Tridens flavus
longspike tridens Tridens strictus
yellow clover Trifolium dubium
white clover Trifolium repens
Persian clover Trifolium resupinatum
Venus-looking-glass Triodanis perfoliata var. perfoliata
eastern gamagrass Tripsacum dactyloides
prairie trisetum Trisetum interruptum
wheat Triticum aestivum
southern cattail Typha domingensis
common cattail Typha latifolia
winged elm Ulmus alata
American elm Ulmus americana
cedar elm Ulmus crassifolia
slippery elm Ulmus rubra
nettle Urtica chamaedryoides
cone-spur bladderwort Utricularia gibba
floating bladderwort Utricularia inflata
farkleberry Vaccinium arboreum
cornsalad Valerianella radiata
Brazilian vervain Verbena brasiliensis
Texas vervain Verbena halei
tuber vervain Verbena rigida
Missouri ironweed Vernonia missurica
corn speedwell Veronica arvensis
arrow-wood Viburnum dentatum
rusty black-haw Viburnum rufidulum
Louisiana vetch Vicia ludoviciana
garden vetch Vicia sativa
prairie violet Viola pedatifida
arrowleaf violet Viola sagittata
Missouri violet Viola sororia var. missouriensis
muscadine grape Vitis rotundifolia
sixweeks grass Vulpia octoflora
Brazilian watermeal Wolffia brasiliensis
Columbian watermeal Wolffia columbiana
Asian watermeal Wolffia globosa
Florida mudmidget Wolffiella gladiata
Virginia chain fern Woodwardia virginica
cocklebur Xanthium strumarium
yellow-eyed-grass Xyris jupicai
irisleaf yellow-eyed-grass Xyris laxifoliavar.iridifolia
giant cutgrass Zizaniopsis miliacea