|
Weed Name |
Bayer Code
|
Family |
Genus |
Species |
|
tallowtree, Chinese
|
SAQSE
|
Euphorbiaceae
|
Sapium
|
sebiferum (L.) Roxb.
|
|
tamarack
|
LAXLA
|
Pinaceae
|
Larix
|
americana Michx.
|
|
tamarisk, Chinese
|
TAACH
|
Tamariscaceae
|
Tamarix
|
chinensis Lour.
|
|
tamarisk, French
|
TAAGA
|
Tamariscaceae
|
Tamarix
|
gallica L.
|
|
tamarisk, athel
|
TAAAP
|
Tamariscaceae
|
Tamarix
|
aphylla (L.) Karsten
|
|
tamarisk, smallflower
|
TAAPA
|
Tamariscaceae
|
Tamarix
|
parviflora DC.
|
|
tanoak
|
LIADE
|
Fagaceae
|
Lithocarpus
|
densiflorus
|
|
tansy, common
|
CHYVU
|
Compositae
|
Tanacetum
|
vulgare L.
|
|
tansymustard
|
DESSS
|
Cruciferae
|
Descurainia
|
sp.
|
|
tansymustard, Menzies
|
DESPM
|
Cruciferae
|
Descurainia
|
pinnata ssP. menziesii (DC.) Detl.
|
|
tansymustard, Richardson
|
DESRI
|
Cruciferae
|
Descurainia
|
richardsonii (Sweet) O.E.Schulz
|
|
tansymustard, green
|
DESRB
|
Cruciferae
|
Descurainia
|
pinnata ssp. brachycarpa (Richards.) Detl.
|
|
tansymustard, pinnate
|
DESPI
|
Cruciferae
|
Descurainia
|
pinnata (Walt.) Britt.
|
|
tansymustard, western
|
DESRJ
|
Cruciferae
|
Descurainia
|
richardsonii ssp. incisa (Engelm.) Detl.
|
|
tapegrass
|
VAISP
|
Hydrocharitaceae
|
Vallisneria
|
spiralis L.
|
|
taro,wild
|
CXSES
|
Araceae
|
Colocasia
|
esculenta (L.) Schott
|
|
tarragon
|
ARTDR
|
Compositae
|
Artemisia
|
dracunculus L.
|
|
tarweed
|
MADSS
|
Compositae
|
Madia
|
sp.
|
|
tarweed, Chilean
|
MADSC
|
Compositae
|
Madia
|
capitata Nutt.
|
|
tarweed, cluster
|
MADGL
|
Compositae
|
Madia
|
glomerata Hook.
|
|
tarweed, coast
|
MADSA
|
Compositae
|
Madia
|
sativa Molina
|
|
tarweed, hayfield
|
HEZCO
|
Compositae
|
Hemizonia
|
congesta DC.
|
|
tarweed, palouse
|
AMSRE
|
Boraginaceae
|
Amsinckia
|
retrorsa Suksd.
|
|
tarweed, showy
|
MADEL
|
Compositae
|
Madia
|
elegans D.Don
|
|
tarweed, virgate
|
HOQVI
|
Compositae
|
Holocarpha
|
virgata (Gray) Keck
|
|
tasajillo
|
OPULE
|
Cactaceae
|
Opuntia
|
leptocaulis DC.
|
|
tasselflower
|
EMIFO
|
Compositae
|
Emilia
|
fosbergii Nichols./Nilson
|
|
tea, Labrador
|
LEDGR
|
Ericaceae
|
Ledum
|
groenlandicum Oeder
|
|
tea, New Jersey
|
CEAAM
|
Rhamnaceae
|
Ceanothus
|
americanus L.
|
|
tearthumb, arrowleaf
|
POLSA
|
Polygonaceae
|
Polygonum
|
sagittatum L.
|
|
teasel, common
|
DIWSI
|
Dipsacaceae
|
Dipsacus
|
fullonum L.
|
|
teasel, cutleaf
|
DIWLA
|
Dipsacaceae
|
Dipsacus
|
laciniatus L.
|
|
teasel, fullers
|
DIWSA
|
Dipsacaceae
|
Dipsacus
|
sativus (L.) Honckeny
|
|
teaweed
|
SIDSP
|
Malvaceae
|
Sida
|
spinosa L.
|
|
telegraphplant
|
HTTGR
|
Compositae
|
Heterotheca
|
grandiflora Nutt.
|
|
tetterwort
|
CHQMA
|
Papaveraceae
|
Chelidonium
|
majus L.
|
|
texasweed
|
CNPPA
|
Euphorbiaceae
|
Caperonia
|
palustris (L.) St. Hil.
|
|
thimbleberry, western
|
RUBPA
|
Rosaceae
|
Rubus
|
parviflorus Nutt.
|
|
thistle
|
CIRSS
|
Compositae
|
Cirsium
|
sp.
|
|
thistle, Canada
|
CIRAR
|
Compositae
|
Cirsium
|
arvense (L.) Scop.
|
|
thistle, Flodman
|
CIRFL
|
Compositae
|
Cirsium
|
flodmanii (Rydb.) Arthur
|
|
thistle, Indian
|
CIRED
|
Compositae
|
Cirsium
|
edule Nutt
|
|
thistle, Italian
|
CRUPY
|
Compositae
|
Carduus
|
pycnocephalus L.
|
|
thistle, Russian
|
SASKR
|
Chenopodiaceae
|
Salsola
|
iberica Sennen & Pau
|
|
thistle, Scotch
|
ONRAC
|
Compositae
|
Onopordum
|
acanthium L.
|
|
thistle, barbwire Russian
|
SASPA
|
Chenopodiaceae
|
Salsola
|
paulsenii Litv.
|
|
thistle, blessed
|
CXDBE
|
Compositae
|
Cnicus
|
benedictus L.
|
|
thistle, bull
|
CIRVU
|
Compositae
|
Cirsium
|
vulgare (Savi) Tenore
|
|
thistle, distaff
|
CAULA
|
Compositae
|
Carthamus
|
lanatus L.
|
|
thistle, field
|
CIRDI
|
Compositae
|
Cirsium
|
discolor (Muhl. ex Willd.) Spreng.
|
|
thistle, holy
|
SLYMA
|
Compositae
|
Silybum
|
marianum (L.) Gaertn.
|
|
thistle, leafy
|
CIRFO
|
Compositae
|
Cirsium
|
foliosum (Hook.) DC.
|
|
thistle, marsh
|
CIRPA
|
Compositae
|
Cirsium
|
palustre (L.) Scop.
|
|
thistle, musk
|
CRUNU
|
Compositae
|
Carduus
|
nutans L.
|
|
thistle, pasture
|
CIRPU
|
Compositae
|
Cirsium
|
pumilum (Nutt.) Spreng.
|
|
thistle, plumeless
|
CRUAC
|
Compositae
|
Carduus
|
acanthoides L.
|
|
thistle, slenderflower
|
CRUTE
|
Compositae
|
Carduus
|
tenuiflorus W.Curtis
|
|
thistle, tall
|
CIRAL
|
Compositae
|
Cirsium
|
altissimum (L.) Spreng.
|
|
thistle, wavyleaf
|
CIRUN
|
Compositae
|
Cirsium
|
undulatum (Nutt.) Spreng.
|
|
thistle, welted
|
CRUCR
|
Compositae
|
Carduus
|
crisPus L.
|
|
thistle, western
|
CIROC
|
Compositae
|
Cirsium
|
occidentale (Nutt.) Jeps.
|
|
thistle, yellow
|
CIRHO
|
Compositae
|
Cirsium
|
horrldulum Michx.
|
|
thistle, yellowspine
|
CIROH
|
Compositae
|
Cirsium
|
ochrocentrum Gray
|
|
thoroughwort, white
|
EUPAL
|
Compositae
|
Eupatorium
|
album L.
|
|
threeawn, arrowfeather
|
ARKPU
|
Gramineae
|
Aristida
|
purpurascens poir.
|
|
threeawn, prairie
|
ARKOL
|
Gramineae
|
Aristida
|
oligantha Michx.
|
|
threeawn, red
|
ARKLS
|
Gramineae
|
Aristida
|
longiseta Steud.
|
|
threeawn, reverchon
|
ARKGL
|
Gramineae
|
Aristida
|
glauca (Nees) Walp.
|
|
threeawn, sixweeks
|
ARKAD
|
Gramineae
|
Aristida
|
adscensionis L.
|
|
threesquare, Olney
|
SCPOL
|
Cyperaceae
|
Scirpus
|
olneyi Gray
|
|
threesquare, common
|
SCPAM
|
Cyperaceae
|
Scirpus
|
americanus Pers.
|
|
tickclover, hoary
|
DEDCN
|
Leguminosae
|
Desmodium
|
canescens (L.) DC.
|
|
tickclover, sessile
|
DEDSF
|
Leguminosae
|
Desmodium
|
sessilifolium (Torr.) T. & G.
|
|
tickseed, hyssopleaf
|
CRQHY
|
Chenopodiaceae
|
Corispermum
|
hyssopifolium L.
|
|
tidestromia, woolly
|
TIDLA
|
Amaranthaceae
|
Tidestromia
|
lanuginosa (Nutt.) Standl.
|
|
timothy
|
PHLPR
|
Gramineae
|
Phleum
|
pratense L.
|
|
toadflax
|
LINSS
|
Scrophulariaceae
|
Linaria
|
sp.
|
|
toadflax, Dalmatian
|
LINDA
|
Scrophulariaceae
|
Linaria
|
genistifolia ssP. dalmatica (L.) Maire&Petitmengin
|
|
toadflax, Florida
|
LINFL
|
Scrophulariaceae
|
Linaria
|
floridana Chapm.
|
|
toadflax, Texas
|
LINTX
|
Scrophulariaceae
|
Linaria
|
texana Scheele
|
|
toadflax, oldfield
|
LINCA
|
Scrophulariaceae
|
Linaria
|
canadensis (L.) Dumont
|
|
toadflax, striped
|
LINRP
|
Scrophulariaceae
|
Linaria
|
repens (L.) Mill.
|
|
toadflax, yellow
|
LINVU
|
Scrophulariaceae
|
Linaria
|
vulgaris Mill.
|
|
tobacco, desert
|
NIOTR
|
Solanaceae
|
Nicotiana
|
trigonophylla Dunal
|
|
tobacco, tree
|
NIOGL
|
Solanaceae
|
Nicotiana
|
glauca Graham
|
|
tobosagrass
|
HILMU
|
Gramineae
|
Hilaria
|
mutica (Buckl.) Benth.
|
|
toothcup
|
ROTRA
|
Lythraceae
|
Rotala
|
ramosior (L.) Koehne
|
|
toothcup, Indian
|
ROTIN
|
Lythraceae
|
Rotala
|
indica (Willd.) Koehne
|
|
torpedograss
|
PANRE
|
Gramineae
|
Panicum
|
repens L.
|
|
toyon
|
HTEAR
|
Rosaceae
|
Heteromeles
|
arbutifolia (Aiton) M.Roemer
|
|
tree-of-heaven
|
AILAL
|
Simaroubaceae
|
Ailanthus
|
peregrina Barkl.
|
|
trefoil, birdsfoot
|
LOTCO
|
Leguminosae
|
Lotus
|
corniculatus L.
|
|
trema, Florida
|
TREMI
|
Ulmaceae
|
Trema
|
micrantha (L.) Blume
|
|
trumpetcreeper
|
CMIRA
|
Bignoniaceae
|
Campsis
|
radicans (L.) Seem. ex Bureau
|
|
trumpetflower
|
TECST
|
Bignoniaceae
|
Tecoma
|
stans (L.) Juss. ex H.B.K.
|
|
tumblegrass
|
SCEPA
|
Gramineae
|
Schedonnardus
|
paniculatus (Nutt.) Trel.
|
|
turnip, wild
|
BRSRA
|
Cruciferae
|
Brassica
|
asperifolia Lam.
|
|
turnipweed
|
RASRU
|
Cruciferae
|
Rapistrum
|
rugosum (L.) All.
|
|
tussock, serrated
|
STDTR
|
Gramineae
|
Nassella
|
trichotoma (Nees) Hack.
|