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(1606 results)
3 letters:
pia,
poa,
rue
4 letters:
bush,
cive,
poke,
ramp,
reed,
rice,
sium,
tree
5 letters:
apios,
basil,
bugle,
chive,
eruca,
fomes,
funka,
galax,
hosta,
loasa,
lotus,
orpin,
oxeye,
panax,
poppy,
ramee,
ramie,
scoke,
shrub,
smilo,
stock,
sulla,
tansy,
trapa,
tulip,
vicia
6 letters:
adonis,
allium,
arabis,
arnica,
arundo,
borago,
bowiea,
carrot,
catgut,
catnip,
caudex,
cheese,
chives,
cicuta,
coptis,
cornus,
crambe,
drypis,
elymus,
galaxy,
galium,
garget,
ginger,
isatis,
juncus,
kentan,
kurrat,
nolina,
orpine,
rivina,
sagina,
senega,
shawny,
sorrel,
tulipa,
wickup
7 letters:
alecost,
alkanet,
alpinia,
ballota,
beebalm,
bogbean,
boneset,
bugloss,
calamus,
carduus,
catmint,
celosia,
charity,
chicory,
chloris,
columbo,
comfrey,
cudweed,
cumfrey,
curcuma,
cynodon,
dittany,
dogbane,
festuca,
francoa,
girasol,
hordeum,
humulus,
iliamna,
liatris,
lychnis,
manroot,
munjeet,
myrrhis,
nabalus,
oregano,
packera,
parsley,
puccoon,
redroot,
rorippa,
roselle,
rozelle,
sanfoin,
sawwort,
scirpus,
setaria,
shortia,
succory,
tobacco
8 letters:
agrostis,
agueweed,
apocynum,
arisarum,
barbarea,
bee balm,
bluebell,
boltonia,
bonavist,
boykinia,
buckbean,
calamint,
catchfly,
costmary,
dogtooth,
eleusine,
erigeron,
erysimum,
esparcet,
estragon,
feverfew,
fireweed,
flagroot,
flat pea,
fleabane,
galangal,
gaywings,
geophyte,
gloriosa,
goat rue,
gromwell,
harebell,
heal all,
hesperis,
homogyne,
hyacinth,
hyssopus,
isopyrum,
lepidium,
lilyturf,
livelong,
longroot,
macleaya,
marjoram,
martynia,
may lily,
mus rose,
nutgrass,
nutsedge,
owlclaws,
paspalum,
pilewort,
pinwheel,
pipewort,
piqueria,
pokeweed,
pondweed,
prunella,
ratibida,
redberry,
richweed,
roridula,
ryegrass,
sainfoin,
sandwort,
scopolia,
sea cole,
sea kale,
silphium,
sparaxis,
spraguea,
subshrub,
sundrops,
tarragon,
teucrium,
toadflax,
tribulus,
trollius,
tuckahoe,
uvularia,
veratrum,
wingstem,
wolfbane,
woodruff,
zingiber
9 letters:
ageratina,
agropyron,
asclepias,
black pea,
bloodroot,
bloomeria,
breadroot,
bud brush,
bugleweed,
celandine,
chafeweed,
colchicum,
colocasia,
coltsfoot,
coral gem,
cordgrass,
corydalis,
dichondra,
doronicum,
echinacea,
edelweiss,
eubryales,
false oat,
false rue,
feverroot,
fire pink,
frostweed,
frostwort,
gas plant,
genus poa,
gray sage,
gypsyweed,
hardheads,
heartleaf,
heart pea,
heliopsis,
hellebore,
hieracium,
horsemint,
horsetail,
horseweed,
hydrastis,
iridaceae,
kok-sagyz,
laminaria,
lily turf,
marsh pea,
minuartia,
miterwort,
mitrewort,
moss pink,
mouse ear,
nut grass,
nut sedge,
pilosella,
pussytoes,
pyrethrum,
rock pink,
rosinweed,
rudbeckia,
rush rose,
rye grass,
saccharum,
saponaria,
saxifraga,
sego lily,
self-heal,
serratula,
sinningia,
snakehead,
stoneroot,
sturt pea,
suffrutex,
tofieldia,
top onion,
tussilago,
typhaceae,
valeriana,
wild leek,
wild pink,
wild rice,
wolfsbane
10 letters:
alopecurus,
andropogon,
antennaria,
anthericum,
aspidistra,
astragalus,
basil balm,
basil mint,
bean caper,
beetleweed,
belladonna,
bible leaf,
bird vetch,
bladderpod,
blue bugle,
blue poppy,
blue tulip,
bog myrtle,
bunchberry,
cat's feet,
cat's foot,
cimicifuga,
coralbells,
cord grass,
deer's-ear,
desert pea,
devil lily,
dipladenia,
eragrostis,
fairy bell,
fairy ring,
field balm,
fingerroot,
fraxinella,
french rye,
genus arum,
genus sium,
giant reed,
glory lily,
goat's rue,
goldenseal,
goldilocks,
goldthread,
gravelweed,
horse balm,
kok-saghyz,
lemon balm,
mandevilla,
marguerite,
meadow pea,
moon daisy,
moss phlox,
naranjilla,
onosmodium,
oswego tea,
ozothamnus,
paronychia,
peach bell,
pennyroyal,
polianthes,
potentilla,
prenanthes,
ranunculus,
red clover,
red sorrel,
reed grass,
scorzonera,
silverweed,
sium suave,
snail bean,
snakeberry,
sporobolus,
star grass,
stone root,
strawberry,
strelitzia,
swamp lily,
sweet balm,
sweet flag,
tetterwort,
thalictrum,
tiger lily,
tree onion,
triglochin,
tuber root,
turtlehead,
velvetleaf,
wallflower,
wandflower,
white sage,
whorlywort,
wild senna,
wood poppy
11 letters:
arrow grass,
asphodeline,
bahia grass,
balsam herb,
beach aster,
bittersweet,
blandfordia,
bushy aster,
calabazilla,
calnada pea,
cheiranthus,
china grass,
cnidoscolus,
collinsonia,
cypripedium,
cystopteris,
dallisgrass,
dead nettle,
deer's-ears,
dog mercury,
dwarf phlox,
echinochloa,
engelmannia,
erect bugle,
erythronium,
gand flower,
garden balm,
genus apios,
genus canna,
genus eruca,
genus fomes,
genus funka,
genus hosta,
genus lotus,
genus panax,
genus trapa,
genus vicia,
geum rivale,
glycyrrhiza,
golden seal,
goose-tansy,
goose grass,
gutierrezia,
haplopappus,
heath aster,
high mallow,
holy clover,
husk tomato,
indian bean,
indian beet,
iris family,
lenten rose,
life-of-man,
lion's foot,
macrotyloma,
marantaceae,
means grass,
musk mallow,
myrtle flag,
orchidaceae,
oxeye daisy,
paeoniaceae,
paris daisy,
peach bells,
perennially,
petrocoptis,
petty morel,
pleiospilos,
podophyllum,
runner bean,
saururaceae,
sheep plant,
shellflower,
silver-lace,
silver sage,
smilo grass,
snailflower,
stiff aster,
swallowwort,
sweet basil,
sweet vetch,
tall mallow,
tree mallow,
waldmeister,
water avens,
white daisy,
wild coffee,
wild crocus,
wild ginger,
wild lupine,
wild potato,
wild spurge,
willow bell,
wolf's bane,
wolf's milk,
wood nettle,
wood spurge,
yellow root,
yerba buena
12 letters:
actaea rubra,
aleppa grass,
alismataceae,
aphyllanthes,
arctic poppy,
arundo donax,
balloon vine,
bishop's cap,
bitter betch,
buffel grass,
burning bush,
catharanthus,
checkerbloom,
cheddar pink,
cheeseflower,
common basil,
common thyme,
crackerberry,
culvers root,
dallis grass,
desert plume,
devil's flax,
dusty miller,
dwarf cornel,
elephantopus,
fairy circle,
fingerflower,
friar's-cowl,
fringed pink,
galium verum,
genus adonis,
genus allium,
genus arabis,
genus arundo,
genus borago,
genus bowiea,
genus cicuta,
genus cleome,
genus coptis,
genus cornus,
genus crambe,
genus dahlia,
genus elymus,
genus galium,
genus isatis,
genus juncus,
genus nolina,
genus pyrola,
genus rivina,
genus sagina,
genus tulipa,
genus zinnia,
hardinggrass,
harvest-lice,
hedge nettle,
hemerocallis,
indian paint,
indian salad,
kidney vetch,
lady's laces,
leafy spurge,
lion's beard,
lithophragma,
lithospermum,
live-forever,
marsh mallow,
meadow clary,
moss campion,
musk thistle,
pampas grass,
peony family,
pigeon berry,
pitcher sage,
poison camas,
polecat weed,
pot marjoram,
prairie dock,
prairie sage,
prickle-weed,
purple avens,
purple cress,
ragged robin,
rhodes grass,
ribbon grass,
russian vine,
scammonyroot,
scented fern,
schnittlaugh,
snail flower,
spring vetch,
swallow wort,
sweet alison,
sweet sultan,
thoroughwort,
tufted vetch,
velvet grass,
vicia cracca,
vicia orobus,
water dragon,
white mallow,
white violet,
wild pumpkin,
wild quinine,
wild vanilla,
winter sweet,
wood cudweed,
youth-on-age
13 letters:
aster dumosus,
aster shortii,
bergamot mint,
black salsify,
bud sagebrush,
buffalo gourd,
canada ginger,
canada violet,
chamois cress,
chicory plant,
chiggerflower,
chrysanthemum,
cicuta verosa,
climbing lily,
coleus blumei,
commelinaceae,
creeping lily,
cuckoo flower,
culver's root,
dieffenbachia,
dog's mercury,
egyptian bean,
exacum affine,
false bugbane,
foetid pothos,
forget-me-not,
french sorrel,
garden sorrel,
genus alpinia,
genus anemone,
genus ballota,
genus bryonia,
genus carduus,
genus celosia,
genus chloris,
genus curcuma,
genus cynodon,
genus festuca,
genus francoa,
genus freesia,
genus hordeum,
genus humulus,
genus iliamna,
genus languas,
genus liatris,
genus myrrhis,
genus nabalus,
genus packera,
genus petunia,
genus rorippa,
genus scirpus,
genus setaria,
genus shortia,
genus sorghum,
genus wyethia,
golden thread,
golden yarrow,
great lobelia,
ground cherry,
harding grass,
herb of grace,
hoary puccoon,
holcus mollis,
horse gentian,
hyacinthoides,
hyacinth bean,
iceland poppy,
indian madder,
indian potato,
joseph's coat,
klammath weed,
levant garlic,
lizard's-tail,
maltese cross,
marsh felwort,
marsh gentian,
marsh trefoil,
medusa's head,
mint geranium,
mountain lily,
mountain mint,
orchid family,
ox-eyed daisy,
painted daisy,
perennial pea,
pleurisy root,
plume thistle,
polygala alba,
pomme blanche,
prairie aster,
prairie gourd,
prairie smoke,
pudding berry,
purple clover,
pyramid bugle,
pyramid plant,
railroad vine,
red baneberry,
rock sandwort,
seaside daisy,
shawnee salad,
short's aster,
skunk cabbage,
snow trillium,
stokes' aster,
sweet alyssum,
sweet calamus,
tall crowfoot,
tinker's root,
trautvetteria,
turfing daisy,
turmeric root,
urtica dioica,
viper's grass,
water hemlock,
water lobelia,
water parsnip,
whorled aster,
wild licorice,
wild marjoram,
winter cherry,
winter savory,
wonder flower,
woodland star,
wormwood sage,
yorkshire fog
14 letters:
acorus calamus,
artemisia cana,
aster arenosus,
aster falcatus,
avalanche lily,
bar-room plant,
black knapweed,
bladder cherry,
bromus inermis,
butterfly weed,
carduus nutans,
cattail family,
chelone glabra,
chincherinchee,
chloris gayana,
chocolate root,
cleome pinnata,
common dogbane,
common lettuce,
common mugwort,
culvers physic,
cypress spurge,
dictamnus alba,
egyptian onion,
false foxglove,
false gromwell,
feabane mullet,
field bindweed,
field scabious,
fountain grass,
galium boreale,
garden lettuce,
gazania rigens,
gentiana lutea,
genus achillea,
genus agrostis,
genus angelica,
genus apocynum,
genus arisarum,
genus barbarea,
genus bergenia,
genus boltonia,
genus boykinia,
genus capsicum,
genus cynancum,
genus eleusine,
genus erigeron,
genus erysimum,
genus gerardia,
genus hepatica,
genus hesperis,
genus homogyne,
genus hyssopus,
genus isopyrum,
genus lepidium,
genus macleaya,
genus paspalum,
genus piqueria,
genus prunella,
genus ratibida,
genus scabiosa,
genus scopolia,
genus silphium,
genus sparaxis,
genus spraguea,
genus teucrium,
genus tribulus,
genus trillium,
genus trollius,
genus uvularia,
genus veratrum,
genus zerumbet,
genus zingiber,
geum triflorum,
giant ryegrass,
golden buttons,
great knapweed,
greek valerian,
hoary plantain,
holcus lanatus,
hound's-tongue,
huntsman's cup,
indian rhubarb,
jacob's ladder,
jamaica sorrel,
john's cabbage,
lactuca sativa,
lady's tobacco,
lathyrus niger,
lolium perenne,
malva moschata,
martynia annua,
meadow foxtail,
mexican hyssop,
missouri gourd,
monarda didyma,
mountain phlox,
nepeta cataria,
new york aster,
oriental poppy,
painted nettle,
persian violet,
phlox subulata,
plantago major,
plantago media,
plumbaginaceae,
plumed thistle,
prairie mimosa,
prince's-plume,
pyrenees daisy,
rumex scutatus,
scarlet runner,
silene acaulis,
sundial lupine,
swamp milkweed,
sweet woodruff,
tall buttercup,
tall oat grass,
tall sunflower,
tramp's spurge,
umbrella plant,
wall germander,
water shamrock,
wild hollyhock,
wild liquorice,
wild sweet pea,
windmill grass,
winter aconite,
woodland oxeye,
yellow salsify
15 letters:
alpinia galanga,
aralia racemosa,
aster ericoides,
aster linosyris,
barberton daisy,
black hellebore,
black snakeroot,
bladder campion,
boehmeria nivea,
butter-and-eggs,
caesalpiniaceae,
carlina acaulis,
cast-iron plant,
celandine poppy,
centaurea nigra,
common calamint,
common foxglove,
common milkwort,
common plantain,
crambe maritima,
culver's physic,
darmera peltata,
dogtooth violet,
dolichos lablab,
dyer's woodruff,
erysimum cheiri,
euphorbia esula,
evergreen grass,
everlasting pea,
false hellebore,
field chickweed,
field mouse-ear,
galax urceolata,
galium odoratum,
genus achimenes,
genus ageratina,
genus agropyron,
genus asclepias,
genus asparagus,
genus bloomeria,
genus colchicum,
genus colocasia,
genus corydalis,
genus dichondra,
genus doronicum,
genus echinacea,
genus hieracium,
genus hydrastis,
genus impatiens,
genus laminaria,
genus minuartia,
genus narcissus,
genus pilosella,
genus rudbeckia,
genus saccharum,
genus saponaria,
genus saxifraga,
genus serratula,
genus sinningia,
genus tofieldia,
genus tussilago,
genus valeriana,
giant buttercup,
giant sunflower,
golden ironweed,
horseshoe vetch,
huntsman's cups,
hydrophyllaceae,
hypoxis hirsuta,
jasmine tobacco,
ladies' tobacco,
lathyrus vernus,
leadwort family,
lepidium alpina,
lesser calamint,
lesser galangal,
lesser knapweed,
liriope muscari,
mascarene grass,
mentha pulegium,
mossy saxifrage,
mount cook lily,
nicotiana alata,
nodding thistle,
orange milkweed,
order eubryales,
oxalis violacea,
pickaback plant,
piggyback plant,
prairie anemone,
purple silkweed,
rheumatism weed,
ruta graveolens,
satureja nepeta,
scarlet lychnis,
sedum telephium,
showy sunflower,
silene uniflora,
silene vulgaris,
sium latifolium,
solanum jamesii,
stinging nettle,
stokesia laevis,
striped gentian,
st peter's wort,
tall bellflower,
tellima affinis,
thymus vulgaris,
transvaal daisy,
treasure flower,
tufted centaury,
vegetable sheep,
vigna caracalla,
virginia mallow,
water horehound,
western mugwort,
western ragweed,
whiteman's foot,
wild snapdragon,
yellow bedstraw,
yellow cleavers,
yellow ironweed
16 letters:
ajuga genevensis,
allegheny spurge,
allium tricoccum,
american columbo,
american gentian,
arctotis venusta,
arenaria stricta,
arisarum vulgare,
arrowroot family,
asarum canadense,
asperula odorata,
aster acuminatus,
bird-on-the-wing,
button snakeroot,
calathian violet,
cart-track plant,
chloris truncata,
common buttercup,
common speedwell,
common vetchling,
corkscrew flower,
cornflower aster,
curlycup gumweed,
cyperus rotundus,
dyers' chamomile,
early wake-robin,
english ryegrass,
erysimum asperum,
evergreen millet,
family iridaceae,
family typhaceae,
flowering spurge,
fringed polygala,
gentiana villosa,
genus alopecurus,
genus andropogon,
genus antennaria,
genus anthericum,
genus astragalus,
genus cimicifuga,
genus delphinium,
genus dipladenia,
genus eragrostis,
genus helianthus,
genus mandevilla,
genus onosmodium,
genus ozothamnus,
genus paronychia,
genus polianthes,
genus potentilla,
genus prenanthes,
genus ranunculus,
genus sisymbrium,
genus sporobolus,
genus strelitzia,
genus thalictrum,
genus triglochin,
giant star grass,
giant willowherb,
gloriosa superba,
goldilocks aster,
greater knapweed,
green arrow arum,
indian arrowroot,
indian breadroot,
indian chocolate,
ipomoea panurata,
ipomoea tricolor,
lablab purpureus,
lace-flower vine,
lavatera arborea,
lesser celandine,
lesser spearwort,
linaria vulgaris,
lupinus perennis,
malva sylvestris,
man-of-the-earth,
marguerite daisy,
meadow buttercup,
meadow saxifrage,
michaelmas daisy,
monarda punctata,
ocimum basilicum,
origanum vulgare,
paspalum notatum,
pomme de prairie,
prairie sagewort,
ranunculus acris,
robin's plantain,
rorippa amphibia,
rubia cordifolia,
salvia pratensis,
salvia spathacea,
satureia montana,
satureja montana,
saururus cernuus,
silene virginica,
silver lace vine,
silver sagebrush,
siskiyou lewisia,
soapwort gentian,
spring vetchling,
stanleya pinnata,
swertia perennia,
viola canadensis,
waterleaf family,
waterwheel plant,
white-man's foot,
white wood aster,
wild potato vine,
wild sarsparilla,
woody nightshade,
yellow chamomile,
yellow vetchling,
zizania aquatica
17 letters:
aeonium haworthii,
agrimonia procera,
ajuga pyramidalis,
alpine milk vetch,
american feverfew,
antennaria dioica,
antirrhinum majus,
aralia nudicaulis,
artemisia frigida,
asarum virginicum,
aspidistra elatio,
aster cordifolius,
aster divaricatus,
aster novi-belgii,
aster turbinellis,
atropa belladonna,
autumn sneezeweed,
calamintha nepeta,
cenchrus ciliaris,
cerastium arvense,
chelidonium majus,
china fleece vine,
cichorium intybus,
common watercress,
cornus canadensis,
creeping crowfoot,
cultivated carrot,
deadly nightshade,
dianthus supurbus,
eranthis hyemalis,
erigeron glaucous,
eriogonum allenii,
erysimum allionii,
euphorbia medusae,
false rue anemone,
flowering tobacco,
fragrant agrimony,
fragrant bedstraw,
gall of the earth,
gentiana calycosa,
genus asphodeline,
genus blandfordia,
genus cheiranthus,
genus cnidoscolus,
genus collinsonia,
genus cypripedium,
genus cystopteris,
genus echinochloa,
genus erythronium,
genus glycyrrhiza,
genus gutierrezia,
genus haplopappus,
genus macrotyloma,
genus pachysandra,
genus petrocoptis,
genus physostegia,
genus pleiospilos,
genus podophyllum,
genus sansevieria,
geranium pratense,
gerbera jamesonii,
golden marguerite,
greater celandine,
great yellowcress,
grindelia robusta,
hairy darling pea,
hedysarum boreale,
helenium hoopesii,
hymenoxys acaulis,
hypericum ascyron,
iliamna ruvularis,
indian paintbrush,
lespedeza cuneata,
lespedeza sericea,
lewisia cotyledon,
lobelia dortmanna,
lotus berthelotii,
meadow cranesbill,
monarda fistulosa,
new england aster,
northern bedstraw,
old-maid's bonnet,
orange sneezeweed,
papaver nudicaule,
papaver orientale,
perennial ragweed,
phalaris aquatica,
phalaris tuberosa,
polygala vulgaris,
pritzelago alpina,
prunella vulgaris,
pulsatilla patens,
purple milk vetch,
ranunculus lyalii,
ranunculus repens,
raoulia australis,
raoulia lutescens,
reed canary grass,
russian dandelion,
scabiosa arvensis,
seabeach sandwort,
senecio cineraria,
senna marilandica,
sericea lespedeza,
seriphidium canum,
solanum dulcamara,
solanum quitoense,
sorghum halapense,
sorghum halepense,
spiderwort family,
spreading dogbane,
stachys palustris,
stachys sylvatica,
star-of-bethlehem,
swainsona greyana,
syrian bean caper,
tacca pinnatifida,
talinum calycinum,
tall meadow grass,
tall white violet,
tanacetum vulgare,
tolmiea menziesii,
tragopogon dubius,
tussilago farfara,
western buttercup,
wild sarsaparilla,
zoysia tenuifolia
18 letters:
african love grass,
agastache mexicana,
althea officinalis,
american spikenard,
anemone pulsatilla,
anthemis tinctoria,
arenaria peploides,
artemisia vulgaris,
artemis spinescens,
asclepias tuberosa,
asperula tinctoria,
aster linarifolius,
aster macrophyllus,
aster ptarmicoides,
astragalus alpinus,
astragalus danicus,
awnless bromegrass,
callirhoe digitata,
cassia marilandica,
centaurea scabiosa,
cheiranthus cheiri,
chinese silk plant,
chrysopsis mariana,
chrysopsis villosa,
cineraria maritima,
clianthus formosus,
creeping buttercup,
dense blazing star,
digitalis purpurea,
dog's-tooth violet,
elymus condensatus,
eragrostis curvula,
eryngium aquaticum,
explorer's gentian,
false sarsaparilla,
family marantaceae,
family orchidaceae,
family paeoniaceae,
family saururaceae,
french honeysuckle,
galega officinalis,
gardener's garters,
gentiana saponaria,
genus aphyllanthes,
genus catharanthus,
genus elephantopus,
genus hemerocallis,
genus lithophragma,
genus lithospermum,
gerardia virginica,
golden honey plant,
hairy golden aster,
heart-leaved aster,
helenium autumnale,
heuchera sanguinea,
hippocrepis comosa,
iliamna acerifolia,
ipomoea fastigiata,
ipomoea pes-caprae,
large-leaved aster,
lathyrus palustris,
lathyrus pratensis,
lathyrus splendens,
leymus condensatus,
lilium lancifolium,
lily of the valley,
linosyris vulgaris,
lobularia maritima,
lychins floscuculi,
lycopus americanus,
matricaria oreades,
melancholy thistle,
monarda clinopodia,
mountain hollyhock,
myosotis sylvatica,
oryzopsis miliacea,
paspalum dilatatum,
perennial ryegrass,
physalis alkekengi,
polemonium boreale,
polemonium reptans,
polygonum aubertii,
prairie gourd vine,
psoralea esculenta,
ranunculus ficaria,
rattlesnake master,
rosebay willowherb,
satureja douglasii,
saxifraga aizoides,
sida hermaphrodita,
silene caroliniana,
smooth darling pea,
stemless hymenoxys,
sturt's desert pea,
trifolium pratense,
tussock bellflower,
upland white aster,
violet wood sorrel,
virginia waterleaf,
weeping love grass,
wild morning-glory,
yellow spiny daisy,
zigadenus nuttalli,
zygophyllum fabago
19 letters:
aconitum lycoctonum,
agrimonia eupatoria,
allium ampeloprasum,
alpinia officinalis,
alpinia officinarum,
american pulsatilla,
american star grass,
american watercress,
anchusa officinalis,
anemone ludoviciana,
arrowleaf groundsel,
asclepias incarnata,
aster novae-angliae,
beach morning glory,
campanula americana,
campanula carpatica,
cardamine douglasii,
cheiranthus asperus,
cirsium helenioides,
claytonia virginica,
clianthus speciosus,
climbing nightshade,
convallaria majalis,
coptis groenlandica,
cortaderia selloana,
creeping soft grass,
dichondra micrantha,
erigeron pulchellus,
eriophyllum lanatum,
erysimum arkansanum,
euphorbia corollata,
family alismataceae,
genus dieffenbachia,
genus hyacinthoides,
genus trautvetteria,
grindelia squarrosa,
heterotheca villosa,
hibiscus sabdariffa,
hypericum maculatum,
isopyrum biternatum,
jerusalem artichoke,
korean velvet grass,
laportea canadensis,
lathyrus latifolius,
lathyrus sylvestris,
lithophragma affine,
lobelia siphilitica,
lychnis flos-cuculi,
melissa officinalis,
mountain watercress,
myosotis scorpiodes,
northern dune tansy,
nyctaginia capitata,
oenothera fruticosa,
our lady's bedstraw,
peltandra virginica,
pennisetum ruppelii,
pennisetum setaceum,
phaseolus caracalla,
phaseolus coccineus,
polygala paucifolia,
potentilla anserina,
pride of california,
pulsatilla vulgaris,
purple poppy mallow,
ranunculus bulbosus,
ranunculus flammula,
sarracenia purpurea,
saxifraga granulata,
saxifraga hypnoides,
scarlet musk flower,
scarlet runner bean,
sea-lavender family,
serratula tinctoria,
sidalcea malviflora,
silphium laciniatum,
solenostemon blumei,
tanacetum balsamita,
tanacetum coccineum,
tanacetum douglasii,
tansy-leaved rocket,
tetraneuris acaulis,
teucrium chamaedrys,
triglochin maritima,
verbesina virginica,
virginia crownbeard,
western wall flower,
white prairie aster,
yellow giant hyssop
20 letters:
agastache nepetoides,
allium schoenoprasum,
alopecurus pratensis,
alsobia dianthiflora,
anthyllis vulneraria,
arenaria caroliniana,
aureolaria virginica,
blue cardinal flower,
calamintha sylvatica,
centaurea imperialis,
cheiranthus allionii,
cirsium heterophylum,
common morning glory,
common pitcher plant,
convolvulus arvensis,
daucus carota sativa,
dwarf-white trillium,
episcia dianthiflora,
eriocaulon aquaticum,
eryngium yuccifolium,
erythronium montanum,
fair-maids-of-france,
family commelinaceae,
fringed poppy mallow,
garden forget-me-not,
great solomon's-seal,
great st john's wort,
great yellow gentian,
hedysarum coronarium,
helianthus giganteus,
helianthus tuberosus,
hydrastis canadensis,
hypericum perforatum,
leontopodium alpinum,
leucanthemum vulgare,
liatris pycnostachya,
lilies of the valley,
lithophragma affinis,
lizard's-tail family,
lychins chalcedonica,
marsh st-john's wort,
mercurialis perennis,
micromeria douglasii,
nabalus serpentarius,
nasturtium amphibium,
petroselinum crispum,
phalaris arundinacea,
phytolacca americana,
pine-barren sandwort,
poisonous nightshade,
polemonium caeruleum,
polygonatum biflorum,
prairie golden aster,
rattlesnake's master,
scorzonera hispanica,
senecio triangularis,
siberian wall flower,
spreading bellflower,
tall field buttercup,
tanacetum parthenium,
taraxacum kok-saghyz,
tephrosia virginiana,
trilisa odoratissima,
veronica officinalis
21 letters:
aldrovanda vesiculosa,
allium cepa viviparum,
ambrosia psilostachya,
american pasqueflower,
arrhenatherum elatius,
artemisia dracunculus,
artemisia gnaphalodes,
artemisia ludoviciana,
broad-leaved plantain,
callirhoe involucrata,
callirhoe triangulata,
calochortus nuttallii,
centaurium scilloides,
chinese lantern plant,
desmanthus ilinoensis,
dutch case-knife bean,
eastern pasque flower,
euphorbia cyparissias,
european pasqueflower,
family plumbaginaceae,
flowering wintergreen,
gentiana pneumonanthe,
gnaphalium sylvaticum,
greater water parsnip,
helleborus orientalis,
hypericum pyramidatum,
hypericum tetrapterum,
hypericum virginianum,
leucanthemum lacustre,
lysichiton americanum,
maryland golden aster,
menyanthes trifoliata,
nasturtium officinale,
onobrychis viciifolia,
peltiphyllum peltatum,
phaseolus multiflorus,
pulicaria dysenterica,
stylophorum diphyllum,
swainsona galegifolia,
swainsona grandiflora,
symplocarpus foetidus,
toowomba canary grass,
triostium perfoliatum,
water-plantain family
22 letters:
asclepias purpurascens,
bittersweet nightshade,
campanula persicifolia,
campanula rotundifolia,
cardamine rotundifolia,
chrysanthemum lacustre,
clustered poppy mallow,
collinsonia canadensis,
cucurbita foetidissima,
cynodon plectostachyum,
enchanter's nightshade,
eupatorium perfoliatum,
euphorbia amygdaloides,
family caesalpiniaceae,
family hydrophyllaceae,
haplopappus spinulosus,
helianthemum canadense,
helianthemum scoparium,
helianthus laetiflorus,
laccopetalum giganteum,
lithospermum canescens,
maximilian's sunflower,
micromeria chamissonis,
northern snow bedstraw,
north island edelweiss,
onobrychis viciaefolia,
pachysandra procumbens,
pennisetum cenchroides,
polygonatum commutatum,
prenanthes serpentaria,
sanguinaria canadensis,
tacca leontopetaloides,
thyme-leaved speedwell,
verbesina alternifolia,
veronica serpyllifolia,
virginia spring beauty,
wild sweet potato vine
23 letters:
arctotis stoechadifolia,
astragalus glycyphyllos,
blue-eyed african daisy,
cephalotus follicularis,
chrysanthemum balsamita,
chrysanthemum coccineum,
creeping windmill grass,
crocanthemum canadensei,
epilobium angustifolium,
euphorbia caput-medusae,
helianthus maximilianii,
leucogenes leontopodium,
lithospermum officinale,
northern jacob's ladder,
ornithogalum thyrsoides,
polemonium van-bruntiae,
ranunculus occidentalis,
verbesina helianthoides
24 letters:
actinomeris alternifolia,
argyranthemum frutescens,
australian pitcher plant,
buphthalmum salicifolium,
chrysanthemum frutescens,
chrysanthemum parthenium,
cynoglossum virginaticum,
drosophyllum lusitanicum,
hugueninia tanacetifolia,
hydrophyllum virginianum,
matricaria tchihatchewii,
meconopsis betonicifolia,
mediterranean snapdragon,
parthenium integrifolium,
pycnanthemum virginianum,
sisymbrium tanacetifolia,
stemless carline thistle,
tanacetum ptarmiciflorum,
veronicastrum virginicum
25 letters:
allegheny mountain spurge,
apocynum androsaemifolium,
cardiospermum halicacabum,
diangus gratianopolitanus,
lithospermum caroliniense,
yellow mountain saxifrage
26 letters:
antennaria plantaginifolia,
chrysanthemum leucanthemum,
trautvetteria carolinensis
28 letters:
broad-leaved everlasting pea,
calamintha nepeta glantulosa,
chrysanthemum ptarmiciflorum,
coptis trifolia groenlandica,
rorippa nasturtium-aquaticum,
solenostemon scutellarioides
29 letters:
jerusalem artichoke sunflower,
narrow-leaved everlasting pea
30 letters:
satureja calamintha glandulosa,
tripleurospermum tchihatchewii
31 letters:
satureja calamintha officinalis
33 letters:
polymonium caeruleum van-bruntiae
38 letters:
tripleurospermum oreades tchihatchewii
Commonly used words are shown in bold. Rare words are dimmed.
Click on a word above to view its definition.
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