Achillée millefeuille
Achillea millefolium
Common yarrow
Grande herbe à poux
Great ragweed
Ambrosia trifida
Linnaeus
Astéracées (Composées)
Genre : Ambrosia
Plantes annuelles
Mauvaises herbes des cultures
Mauvaises herbes des villes (plantes rudérales)
Échelle : trait horizontal = 1cm; trait vertical = 1mm
Achillea millefolium
Common yarrow
Achillea ptarmica
Sneezeweed yarrow
Artemisia absinthium
Absinthe wormwood
Artemisia biennis
Biennial wormwood
Artemisia ludoviciana
Silver wormwood
Artemisia vulgaris
Common wormwood
Symphyotrichum novi-belgii var. novi-belgii
New York aster
Symphyotrichum novae-angliae
New England aster
Symphyotrichum lanceolatum subsp. lanceolatum var. lanceolatum
White panicled aster
Symphyotrichum lateriflorum var. lateriflorum
Calico aster
Symphyotrichum puniceum
Purple-stemmed aster
Symphyotrichum cordifolium
Heart-leaved aster
Eurybia macrophylla
Large-leaved aster
Doellingeria umbellata
Flat-top white aster
Symphyotrichum ciliatum
Rayless alkali aster
Bidens frondosa
Devil's beggarticks
Bidens cernua
Nodding beggarticks
Bidens vulgata
Tall beggarticks
Anthemis cotula
Stinking chamomile
Cota tinctoria
Yellow chamomile
Centaurea cyanus
Bachelor's button
Centaurea jacea
Brown knapweed
Centaurea nigra
Black knapweed
Cirsium arvense
Canada thistle
Cirsium discolor
Field thistle
Carduus nutans
Nodding thistle
Cirsium vulgare
Bull thistle
Carduus acanthoides
Spiny plumeless thistle
Cichorium intybus
Wild chicory
Crepis tectorum
Narrow-leaved hawksbeard
Eutrochium maculatum var. maculatum
Spotted Joe Pye weed
Eupatorium perfoliatum
Common boneset
Ageratina altissima
White snakeroot
Galinsoga quadriradiata
Hairy galinsoga
Galinsoga parviflora
Small-flowered galinsoga
Omalotheca sylvatica
Woodland cudweed
Gnaphalium uliginosum
Low cudweed
Arctium lappa
Great burdock
Ambrosia artemisiifolia
Common ragweed
Ambrosia psilostachya
Perennial ragweed
Helenium autumnale
Common sneezeweed
Anaphalis margaritacea
Pearly everlasting
Inula helenium
Elecampane
Cyclachaena xanthiifolia
False ragweed
Sonchus arvensis
Field sow-thistle
Sonchus oleraceus
Common sow-thistle
Sonchus asper
Prickly sow-thistle
Lactuca biennis
Tall blue lettuce
Lactuca canadensis
Canada lettuce
Lactuca serriola
Prickly lettuce
Xanthium strumarium
Rough cockleburr
Lapsana communis
Common nipplewort
Scorzoneroides autumnalis
Autumn hawkbit
Leucanthemum vulgare
Oxeye daisy
Tripleurospermum inodorum
Scentless chamomile
Matricaria discoidea
Pineappleweed
Onopordum acanthium
Scotch thistle
Arctium minus
Common burdock
Taraxacum officinale
Common dandelion
Bellis perennis
English daisy
Petasites frigidus var. palmatus
Palmate coltsfoot
Rudbeckia hirta var. pulcherrima
Black-eyed Susan
Tragopogon pratensis
Meadow goatsbeard
Tragopogon dubius
Yellow goatsbeard
Packera aurea
Golden groundsel
Senecio viscosus
Sticky ragwort
Senecio vulgaris
Common ragwort
Tanacetum vulgare
Common tansy
Helianthus tuberosus
Jerusalem artichoke
Helianthus annuus
Common sunflower
Tussilago farfara
Coltsfoot
Solidago canadensis
Canada goldenrod
Solidago hispida
Hairy goldenrod
Solidago puberula
Downy goldenrod
Solidago rugosa
Rough-stemmed goldenrod
Euthamia graminifolia
Grass-leaved goldenrod
Solidago flexicaulis
Zigzag goldenrod
Erigeron annuus
Annual fleabane
Erigeron philadelphicus
Philadelphia fleabane
Erigeron canadensis
Canada horseweed
Erigeron strigosus
Rough fleabane
Pilosella caespitosa
Meadow hawkweed
Hieracium umbellatum
Umbellate hawkweed
Pilosella aurantiaca
Orange hawkweed
Pilosella officinarum
Mouse-ear hawkweed
Hieracium scabrum
Rough hawkweed
Hieracium vulgatum
Common hawkweed
Pilosella ×floribunda
King devil hawkweed
Erechtites hieraciifolius
Eastern burnweed