|
Weed Name |
Bayer Code
|
Family |
Genus |
Species |
|
wahoo, eastern
|
EUOAT
|
Celastraceae
|
Euonymus
|
latifolius Marshall non Miller
|
|
wallflower
|
ERYSS
|
Cruciferae
|
Erysimum
|
sp.
|
|
wallflower, bushy
|
ERYRE
|
Cruciferae
|
Erysimum
|
repandum L.
|
|
wallflower, tall wormseed
|
ERYHI
|
Cruciferae
|
Erysimum
|
hieraciifolium L.
|
|
wallflower, tall wormseed
|
ERYHI
|
Cruciferae
|
Erysimum
|
strictum Gaertn., Mey. & Scherb.
|
|
wallflower, western
|
ERYAS
|
Cruciferae
|
Erysimum
|
asperum (Nutt.) DC.
|
|
walnut
|
IUGSS
|
Juglandaceae
|
Juglans
|
sp.
|
|
waltheria, Florida
|
WALAM
|
Sterculiaceae
|
Waltheria
|
americana L.
|
|
waltheria, Indian
|
WALAM
|
Sterculiaceae
|
Waltheria
|
indica L.
|
|
wanderingjew, green
|
TRAAL
|
Commelinaceae
|
Tradescantia
|
albiflora Kunth
|
|
water-bent
|
POHVI
|
Gramineae
|
Polypogon
|
semiverticillatus (Forsk.) Hyl.
|
|
water-thyme
|
HYLLI
|
Hydrocharitaceae
|
Hydrilla
|
verticillata (L. f.) Royle
|
|
waterbuttercup, white
|
RANTR
|
Ranunculaceae
|
Ranunculus
|
aquatilis L. var. capillaceus (Thuill.) DC.
|
|
waterbuttercup, yellow
|
RANFB
|
Ranunculaceae
|
Ranunculus
|
flabellaris Raf.
|
|
watercress
|
NAAOF
|
Cruciferae
|
Nasturtium
|
officinale R.Br.
|
|
watergrass
|
ECHSS
|
Gramineae
|
many
|
many
|
|
watergrass, early
|
ECHOR
|
Gramineae
|
Echinochloa
|
crus-galli (L.) P.B. var. oryzoides (Vas.) Ohwi
|
|
watergrass, late
|
ECHOR
|
Gramineae
|
Echinochloa
|
oryzoides (Ard.) Fritsch
|
|
watergrass, southern
|
HYFCA
|
Gramineae
|
Hydrochloa
|
caroliniensis P. Beauv. HYFCA
|
|
waterhemlock
|
CIUSS
|
Umbelliferae
|
Cicuta
|
sp.
|
|
waterhemlock, spotted
|
CIUMC
|
Umbelliferae
|
Cicuta
|
maculata L.
|
|
waterhemlock, western
|
CIUDO
|
Umbelliferae
|
Cicuta
|
douglasii (DC.) Coult. & Rose
|
|
waterhemp, common
|
AMATA
|
Amaranthaceae
|
Amaranthus
|
rudis Sauer
|
|
waterhemp, tall
|
AMATU
|
Amaranthaceae
|
Amaranthus
|
tuberculatus (Moq.) J.D.Sauer
|
|
waterhyacinth
|
EICCR
|
Pontederiaceae
|
Eichhornia
|
crassipes (Mart.) Solms
|
|
waterhyacinth, anchored
|
EICAZ
|
Pontederiaceae
|
Eichhornia
|
azurea (Sw.) Kunth
|
|
waterhyssop
|
BAOSS
|
Scrophulariaceae
|
Bacopa
|
sp.
|
|
waterhyssop, Carolina
|
BAOCA
|
Scrophulariaceae
|
Bacopa
|
caroliniana (Walt.) B.L.Robins.
|
|
waterhyssop, Eisen
|
BAOEI
|
Scrophulariaceae
|
Bacopa
|
eisenii (Kell.) Pennell
|
|
waterhyssop, Monnier
|
BAOMO
|
Scrophulariaceae
|
Bacopa
|
monnieri (L.) Pennell
|
|
waterhyssop, disc
|
BAORO
|
Scrophulariaceae
|
Bacopa
|
rotundifolia (Michx.) Wettst.
|
|
waterhyssop, nameless
|
BAOIN
|
Scrophulariaceae
|
Bacopa
|
innominata (Gomez Maza) Alain
|
|
waterlettuce
|
PIIST
|
Araceae
|
Pistia
|
stratiotes L.
|
|
waterlily, Fenzel
|
NYMBF
|
Nymphaeaceae
|
Nymphaea
|
blanda G.F.W.Mey. var. fenzliama (Lehm.) Caspary
|
|
waterlily, Mexican
|
NYMME
|
Nymphaeaceae
|
Nymphaea
|
mexicana Zucc.
|
|
waterlily, blue
|
NYNEL
|
Nymphaeaceae
|
Nymphaea
|
elegans Hook.
|
|
waterlily, cape blue
|
NYMCP
|
Nymphaeaceae
|
Nymphaea
|
capensis Thunb.
|
|
waterlily, fragrant
|
NYMOR
|
Nymphaeaceae
|
Nymphaea
|
odorata Ait.
|
|
waterlily, large
|
NYMAM
|
Nymphaeaceae
|
Nymphaea
|
ampla (Salisb.) DC.
|
|
waterlily, magnolia
|
NYMTU
|
Nymphaeaceae
|
Nymphaea
|
tuberosa Paine
|
|
waterlily, yellow
|
NUPLU
|
Nymphaeaceae
|
Nuphar
|
luteum (L.) Sibth. & Sm.
|
|
watermeal, common
|
WOLCO
|
Lemnaceae
|
Wolffia
|
columbiana Karst.
|
|
watermeal, pimpled
|
WOLPA
|
Lemnaceae
|
Wolffia
|
papulifera C.H.Thomps.
|
|
watermeal, spotted
|
WOLPU
|
Lemnaceae
|
Wolffia
|
punctata Griseb.
|
|
watermelon
|
CITLA
|
Cucurbitaceae
|
Citrullus
|
lanatus (Thunb.) Matsum. & Nakai
|
|
watermilfoil, Eurasian
|
MYPSP
|
Haloragaceae
|
Myriophyllum
|
spicatum L.
|
|
watermilfoil, eastern
|
MYPPI
|
Haloragaceae
|
Myriophyllum
|
pinnatum (Walt.) B.S.P.
|
|
watermilfoil, lax
|
MYPLA
|
Haloragaceae
|
Myriophyllum
|
laxum Shuttlew. ex Chapman
|
|
watermilfoil,northern
|
MYPSE
|
Haloragaceae
|
Myriophyllum
|
exalbescens Fern.
|
|
watermilfoil, variable
|
MYPHE
|
Haloragaceae
|
Myriophyllum
|
heterophyllum Michx.
|
|
watermilfoil, whorled
|
MYPVE
|
Haloragaceae
|
Myriophyllum
|
verticillatum L.
|
|
waterparsnip
|
SIUSU
|
Umbelliferae
|
Sium
|
suave Walt.
|
|
waterplantain, common
|
ALSPA
|
Alismataceae
|
Alisma
|
plantago-aquatica L.
|
|
waterplantain, lanceleaved
|
ALSLA
|
Alismataceae
|
Alisma
|
lanceolatum With.
|
|
waterplantain, narrowleaf
|
ALSGR
|
Alismataceae
|
Alisma
|
gramineum J.C.Gmel.
|
|
waterpod
|
ELSNY
|
Hydrophyllaceae
|
Ellisia
|
nyctelea L.
|
|
waterprimrose
|
LUDSS
|
Onagraceae
|
Ludwigia
|
sp.
|
|
waterprimrose, Uruguay
|
LUDUR
|
Onagraceae
|
Ludwigia
|
uruguayensis (Camb.) Hara
|
|
waterprimrose, bushy
|
LUDAL
|
Onagraceae
|
Ludwigia
|
alternifolia L.
|
|
waterprimrose, creeping
|
LUDPE
|
Onagraceae
|
Ludwigia
|
peploides (H.B.K.) Raven
|
|
waterprimrose, floating
|
LUDRE
|
Onagraceae
|
Ludwigia
|
repens Forst.
|
|
waterprimrose, winged
|
IUSDE
|
Onagraceae
|
Ludwigia
|
decurrens Walt.
|
|
waterpurslane
|
PPLPO
|
Lythraceae
|
Peplis
|
portula L.
|
|
watershield
|
BRESS
|
Cabombaceae
|
Brasenia
|
sp.
|
|
watersprite
|
CESTH
|
Parkeriaceae
|
Ceratopteris
|
thalictroides (L.) Brongn.
|
|
waterstargrass
|
HETDU
|
Pontederiaceae
|
Heteranthera
|
dubia (Jacq.) Macm.
|
|
waterstarwort
|
CLTPA
|
Callitrichaceae
|
Callitriche
|
verna L.
|
|
waterstarwort, European
|
CLTST
|
Callitrichaceae
|
Callitriche
|
stagnalis Scop.
|
|
waterwillow, American
|
IUIAM
|
Acanthaceae
|
Justicia
|
americana (L.) Vahl
|
|
waterwort
|
ELTTR
|
Elatinaceae
|
Elatine
|
triandra Schkuhr
|
|
waterwort, small
|
ELTMI
|
Elatinaceae
|
Elatine
|
minima (Nutt.) Fisch. & Mey.
|
|
waxmyrtle, southern
|
MYRCE
|
Myricaceae
|
Myrica
|
cerifera L.
|
|
wedelia, trailing
|
WEDTR
|
Compositae
|
Wedelia
|
trilobata (L.) Hitchc.
|
|
wedgescale grass, prairie
|
SFPOB
|
Gramineae
|
Sphenopholis
|
obtusata (Michx.) Scribn.
|
|
wheat (volunteer)
|
TRZSS
|
Gramineae
|
Triticum
|
aestivum L.
|
|
wheatgrass, bluebunch
|
AGRSP
|
Gramineae
|
Agropyron
|
spicatum (Pursh) Scribn. & Sm.
|
|
wheatgrass, crested
|
AGRCR
|
Gramineae
|
Agropyron
|
cristatum (L.) Gaertn.
|
|
wheatgrass, intermediate
|
AGRIT
|
Gramineae
|
Agropyron
|
intermedium (Host) P. Beauv.
|
|
wheatgrass, pubescent
|
AGRTP
|
Gramineae
|
Agropyron
|
tricophorum (Link) Richt.
|
|
wheatgrass, slender
|
AGRTR
|
Gramineae
|
Elymus
|
trachycaulus (Link) Gould ex Shinners
|
|
wheatgrass, tall
|
AGREL
|
Gramineae
|
Elytrigia
|
elongata (Host) Nevski
|
|
wheatgrass, western
|
AGRSM
|
Gramineae
|
Agropyron
|
tsukushiense (Honda) Ohwi var. transiens (Hack.) Ohwi
|
|
whitebrush, Texas
|
ALYLY
|
Verbenaceae
|
Aloysia
|
lycioides Cham.
|
|
whitetop
|
CADSS
|
Cruciferae
|
Cardaria
|
sp.
|
|
whitetop, hairy
|
CADPU
|
Cruciferae
|
Cardaria
|
pubescens (C.A.Mey.) Jarmolenko
|
|
whitetop, lens-podded
|
CADDC
|
Cruciferae
|
Cardaria
|
chalepensis (L.) Hand.-Mazz.
|
|
whitlowgrass, spring
|
ERPVE
|
Cruciferae
|
Draba
|
verna L.
|
|
whitlowgrass, wood
|
DRBNE
|
Cruciferae
|
Draba
|
nemorosa L.
|
|
wildbean, smoothseed
|
SRTLE
|
Leguminosae
|
Strophostyles
|
leiosperma (T. & G.) Piper
|
|
wildbean, trailing
|
SRTHE
|
Leguminosae
|
Strophostyles
|
helvula (L.) Ell.
|
|
wildcucumber, western
|
ECNOR
|
Cucurbitaceae
|
Marah
|
oreganus (T. & G.) T.J.Howell
|
|
wildindigo, yellow
|
BAPTI
|
Leguminosae
|
Baptisia
|
tinctoria (L.) R.Br.
|
|
wildrice, interior
|
ZIZAI
|
Gramineae
|
Zizania
|
aquatica L. var. interior
|
|
wildrose
|
ROSSS
|
Rosaceae
|
Rosa
|
sp.
|
|
wildrye
|
ELYSS
|
Gramineae
|
Elymus
|
sp.
|
|
wildrye, Virginia
|
ELYVI
|
Gramineae
|
Elymus
|
virginicus L.
|
|
willow
|
SAXSS
|
Salicaceae
|
Salix
|
sp.
|
|
willow, Florida
|
SAXFL
|
Salicaceae
|
Salix
|
floridana Chapman
|
|
willow, black
|
SAXNI
|
Salicaceae
|
Salix
|
nigra Marsh.
|
|
willow, coastal plain
|
SAXCR
|
Salicaceae
|
Salix
|
caroliniana Michx.
|
|
willow, coyote
|
SAXEX
|
Salicaceae
|
Salix
|
exigua Nutt.
|
|
willow, crack
|
SAXFR
|
Salicaceae
|
Salix
|
fragilis L.
|
|
willow, goat
|
SAXCP
|
Salicaceae
|
Salix
|
caprea L.
|
|
willow, laurel
|
SAXPE
|
Salicaceae
|
Salix
|
pentandra L.
|
|
willow, longfruited primrose
|
LUDOC
|
Onagraceae
|
Ludwigia
|
octovalvis (Jacq.) Raven
|
|
willow, prairie
|
SAXHM
|
Salicaceae
|
Salix
|
humilis Marsh.
|
|
willow, primrose
|
LUDPV
|
Onagraceae
|
Ludwigia
|
peruviana (L.) Hara
|
|
willow, sandbar
|
SAXIN
|
Salicaceae
|
Salix
|
interior Rowles
|
|
willow, silky
|
SAXSE
|
Salicaceae
|
Salix
|
sericea Marsh.
|
|
willow, weeping
|
SAXBA
|
Salicaceae
|
Salix
|
babylonica L.
|
|
willow, white
|
SAXAL
|
Salicaceae
|
Salix
|
alba L.
|
|
willowweed, American
|
EPIAC
|
Onagraceae
|
Epilobium
|
adenocaulon Hausskn.
|
|
willowweed, Arctic
|
EPIDA
|
Onagraceae
|
Epilobium
|
davuricum Fisch.
|
|
willowweed, hairy
|
EPIHI
|
Onagraceae
|
Epilobium
|
hirsutum L.
|
|
willowweed, panicle
|
EPIPC
|
Onagraceae
|
Epilobium
|
paniculatum Nutt. ex T. & G.
|
|
windgrass
|
APEIN
|
Poaceae
|
Apera
|
interrupta (L.) P.Beauv.
|
|
windmillgrass, tumble
|
CHRVE
|
Gramineae
|
Chloris
|
verticillata Nutt.
|
|
winklegrass
|
ISCRU
|
Gramineae
|
Ischaemum
|
rugosum Salisb.
|
|
wintergreen, aromatic
|
GAHPR
|
Ericaceae
|
Gaultheria
|
procumbens L.
|
|
wintergreen, round-leaved
|
PYWRO
|
Pyrolaceae
|
Pyrola
|
rotundifolia L.
|
|
wiregrass
|
ELEIN
|
Gramineae
|
Eleusine
|
indica (L.) Gaertn.
|
|
wirelettuce, desert
|
STOPA
|
Compositae
|
Stephanomeria
|
pauciflora (Torr.) Nutt.
|
|
wirelettuce, slender
|
STOTE
|
Compositae
|
Stephanomeria
|
tenuifolia (Torr.) Hall
|
|
witchgrass
|
PANCA
|
Gramineae
|
Panicum
|
brevifolium (Link) Kunth
|
|
witchweed
|
STRLU
|
Scrophulariaceae
|
Striga
|
asiatica (L.) Ktze.
|
|
witchweed, cowpea
|
STRGE
|
Scrophulariaceae
|
Striga
|
gesnerioides (Willd.) Vatke
|
|
woad, dyers
|
ISATI
|
Cruciferae
|
Isatis
|
tinctoria L.
|
|
wolfberry, Berlandier
|
LYUBE
|
Solanaceae
|
Lycium
|
berlandieri Dunal
|
|
woodrush, common
|
LUUMU
|
Juncaceae
|
Luzula
|
campestris (L.) DC. ssp. multiflora
|
|
woodsorrel
|
OXASS
|
Oxalidaceae
|
Oxalis
|
sp.
|
|
woodsorrel, European
|
OXAEU
|
Oxalidaceae
|
Oxalis
|
europaea Jordan
|
|
woodsorrel, Florida yellow
|
OXAFL
|
Oxalidaceae
|
Oxalis
|
florida Salisb.
|
|
woodsorrel, creeping
|
OXACO
|
Oxalidaceae
|
Oxalis
|
corniculata L.
|
|
woodsorrel, violet
|
OXACB
|
Oxalidaceae
|
Oxalis
|
corymbosa DC.
|
|
woodsorrel, yellow
|
OXAST
|
Oxalidaceae
|
Oxalis
|
stricta L.
|
|
woolgrass
|
ANZPU
|
Gramineae
|
Anthephora
|
hochstetteri Nees ex Hochst.
|
|
wormwood
|
ARTSS
|
Compositae
|
Artemisia
|
sp.
|
|
wormwood, Louisiana
|
ARTLU
|
Compositae
|
Artemisia
|
ludoviciana Nutt.
|
|
wormwood, absinth
|
ARTAB
|
Compositae
|
Artemisia
|
absinthium L.
|
|
wormwood, annual
|
ARTAN
|
Compositae
|
Artemisia
|
annua L.
|
|
wormwood, beach
|
ARTST
|
Compositae
|
Artemisia
|
stelleriana Bess.
|
|
wormwood, biennial
|
ARTBI
|
Compositae
|
Artemisia
|
biennis Willd.
|
|
wormwood, southern
|
ARTAT
|
Compositae
|
Artemisia
|
abrotanum L.
|
|
woundwort, marsh
|
STAPA
|
Labiatae
|
Stachys
|
palustris L.
|