Browse by Scientific Name

Below is a list of all the weeds in our database, sorted by scientific name. You may also view the list sorted by common name.

• Abutilon theophrasti - velvetleaf
• Acroptilon repens - Russian knapweed
• Aegilops cylindrica - jointed goatgrass, jointgrass
• Aegilops triuncialis - barb goatgrass
• Ailanthus altissima - tree-of-heaven
• Alhagi maurorum - camelthorn
• Alopecurus myosuroides - blackgrass
• Alternanthera caracasana - khakiweed, creeping chaffweed
• Amaranthus albus - tumble pigweed
• Amaranthus blitoides - prostrate pigweed
• Amaranthus palmeri - palmer amaranth, carelessweed
• Amaranthus retroflexus - redroot pigweed
• Ambrosia acanthicarpa - annual bursage
• Ambrosia artemisiifolia - common ragweed
• Anoda cristata - spurred anoda
• Anthoxanthumm odoratum - sweet vernalgrass
• Apium graveolens - wild celery
• Apocynum cannabinum - hemp dogbane
• Argemone hispida - rough prickly-poppy
• Aristida adscensionis - sixweeks threeawn
• Aristida purpurea - Fendler's threeawn
• Artemisia tridentata - big sagebrush
• Arundo donax - giant reed
• Asclepias fascicularis - Mexican whorled milkweed
• Asclepias latifolia - broadleaf milkweed
• Asclepias subverticillata - horsetail milkweed, western whorled milkweed, whorled milkweed
• Asphodelus fistulosus - onionweed
• Astragalus spp. - locoweed
• Atriplex semibaccata - Australian saltbush
• Avena barbata - slender oat
• Avena fatua - wild oat
• Bidens frondosa - devils beggarticks
• Bidens pilosa - hairy beggarticks
• Bouteloua aristidoides - needle grama
• Brassica tournefortii - Sahara mustard
• Briza minor - little quackinggrass
• Bromus catharticus - rescuegrass
• Bromus diandrus - ripgut brome
• Bromus japonicus - Japanese brome, meadow brome
• Bromus madritensis ssp rubens - foxtail brome, red brome, Bromus rubens
• Bromus sterilis - poverty brome
• Bromus tectorum - cheatgrass, downy brome
• Calandrinia ciliata - redmaids
• Cannabis sativa - marijuana
• Capsella bursa-pastoris - shepherdspurse
• Cardamine hirsuta - hairy bittercress
• Carduus acanthoides - spiny thistle, plumeless thistle
• Carduus nutans - musk thistle, nodding thistle
• Cenchrus echinatus - southern sandbur
• Cenchrus incertus - field sandbur
• Cenchrus longispinus - sandbur
• Centaurea calcitrapa - purple starthistle
• Centaurea cyanus - cornflower, bachelor buttons
• Centaurea diffusa - diffuse knapweed
• Centaurea maculosa - spotted knapweed, Centaurea biebersteinii
• Centaurea virgata ssp. squarrosa - squarrose knapweed, Centaurea squarrosa
• Cerastium glomeratum - sticky chickweed
• Chenopodium album - common lambsquarter
• Chloris verticillata - tumble windmillgrass
• Chloris virgata - showy windmillgrass
• Chondrilla juncea - rush skeletonweed
• Cichorium intybus - chicory
• Cicuta douglasii - western waterhemlock
• Cicuta maculata - spotted waterhemlock
• Cirsium arvense - Canada thistle
• Cirsium ochrocentrum - yellowspine thistle
• Cirsium vulgare - bull thistle
• Citrullus lanatus - citronmelon
• Claytonia perfoliata - miner's lettuce
• Conium maculatum - poison hemlock
• Convolvulus arvensis - field bindweed
• Conyza bonariensis - hairy fleabane, asthmaweed
• Conyza canadensis - horseweed, marestail
• Conyza coulteri - Coulter's conyza
• Coronopus didymus - lesser swinecress
• Cressa truxillensis - alkaliweed
• Cucurbita foetidissima - buffalo gourd
• Cuscuta spp - dodder
• Cylindropuntia imbricata - cane cholla
• Cynodon dactylon - bermudagrass
• Cyperus difformis - smallflower umbrellasedge
• Cyperus esculentus - yellow nutsedge
• Cyperus rotundus - purple nutsedge
• Dactylis glomerata - orchard grass
• Dactyloctenium aegyptium - crowfootgrass
• Datura inoxia - downy thornapple, sacred datura
• Datura quercifolia - oakleaf thornapple
• Datura wrightii - sacred thornapple
• Daucus carota - wild carrot, Queen Ann's lace
• Daucus pusillus - southwestern carrot
• Descurainia pinnata - tansy mustard
• Descurainia sophia - flixweed
• Dichondra repens - dichondra
• Digitaria ischaemum - smooth crabgrass
• Digitaria sanguinalis - hairy crabgrass
• Dipsacus sativus - Fullers teasel
• Echinochloa colona - jungle-rice
• Echinochloa crus-galli - large barnyardgrass, watergrass
• Elaeagnus angustifolia - Russian olive
• Eleusine indica - goosegrass
• Elytrigia repens - quackgrass, Elymus repens
• Equisetum arvense - field horsetail, horsetail
• Eragrostis barrelieri - mediterranean lovegrass
• Eragrostis cilianensis - stinkgrass
• Eragrostis curvula - weeping lovegrass
• Eragrostis lehmanniana - Lehmann lovegrass
• Eragrostis mexicana - Mexican lovegrass
• Eragrostis minor - little lovegrass
• Eragrostis pectinacea - tufted lovegrass
• Eriochloa acuminata - Texas cupgrass, southwestern cupgrass
• Erodium cicutarium - redstem filaree
• Euphorbia esula - leafy spurge, wolfs milk
• Euphorbia maculata - spotted spurge, Chamaesyce maculata
• Euphorbia nutans - nodding spurge
• Euphorbia prostrata - ground or prostrate spurge
• Euphorbia serpens - creeping spurge
• Euphorbia serpyllifolia - thyme-leaf spurge, Chamaesyce serpyllifolia
• Galinsoga parviflora - smallflower galinsoga
• Galium aparine - catchweed bedstraw
• Gaura parviflora - velvety gaura, small-flowered gaura
• Genista monspessulana - French broom
• Glycyrrhiza lepidota - wild licorice
• Gnaphalium exilifolium - slender cudweed
• Grindelia squarrosa - curlycup gumweed
• Gutierrezia sarothrae - broom snakeweed
• Halogeton glomeratus - halogeton
• Hedera helix - English ivy
• Helianthus annuus - common sunflower
• Helianthus ciliaris - Texas blueweed
• Helianthus maximilianii - Maximilian sunflower
• Helianthus petiolaris - prairie sunflower
• Heteropogon contortus - tanglehead
• Hoffmannseggia glauca - hog potato
• Hordeum jubatum - foxtail barley, squirreltail
• Hordeum murinum - wall barley
• Hyoscyamus niger - black henbane
• Imperata brevifolia - satintail
• Ipomoea cristulata - trans-Pecos morningglory
• Ipomoea hederacea - ivyleaf morningglory
• Ipomoea purpurea - common morningglory
• Isatis tinctoria - Dyer's woad
• Juniperus monosperma - one-seed juniper
• Kochia scoparia - kochia
• Lactuca saligna - willowleaf lettuce
• Lactuca serriola - prickly lettuce
• Lamium amplexicaule - henbit
• Larrea tridentata - creosote bush
• Lepidium draba - hoary cress, whitetop, Cardaria draba
• Lepidium latifolium - perennial pepperweed
• Lepidium oblongum - veiny pepperweed
• Leptochloa fascicularis - bearded sprangletop
• Leptochloa panicea - red sprangletop
• Leptochloa uninervia - Mexican sprangletop
• Leucanthemum vulgare - oxeye daisy, Chrysanthemum leucanthemum
• Linaria dalmatica - dalmatian toadflax
• Linaria vulgaris - yellow toadflax, butter and eggs
• Lolium perenne - Italian ryegrass
• Lycium pallidum - pale wolfberry
• Lythrum californicum - California loosestrife
• Lythrum salicaria - purple loosestrife
• Maclura pomifera - osage-orange
• Malva neglecta - dwarf cheeseweed, common mallow
• Malvella leprosa - alkali mallow
• Matricaria matricariodes - pineapple-weed, Chamomilla suaveolens
• Medicago lupulina - black medic
• Melilotus alba - white sweetclover
• Melilotus indicus - Indian sweetclover
• Melilotus officinalis - yellow sweetclover
• Mentha suaveolens - apple mint
• Muhlenbergia asperifolia - scratchgrass
• Oenothera biennis - common eveningprimrose
• Oenothera speciosa - showy eveningprimrose
• Onopordum acanthium - Scotch thistle
• Opuntia phaeacantha - plains pricklypear
• Orobanche cooperi - Cooper's broomrape
• Oxalis latifolia - broadleaf woodsorrel
• Panicum antidotale - blue panic
• Panicum capillare - witchgrass, ticklegrass
• Paspalum dilatatum - dallisgrass
• Paspalum distichum - knotgrass
• Peganum harmala - African rue
• Pennisetum ciliare - buffelgrass
• Pennisetum clandestinum - kikuyugrass
• Pennisetum setaceum - crimson fountaingrass
• Phacelia spp. - scorpionweed
• Phalaris aquatica - Harding grass
• Phalaris arundinacea - reed canarygrass
• Phalaris caroliniana - Carolina canarygrass
• Phalaris minor - littleseed canarygrass
• Phoradendron spp. - mistletoe
• Phragmites australis - common reed
• Physalis angulata - cutleaf groundcherry
• Physalis philadelphica - tomatillo groundcherry
• Physalis pubescens - downy groundcherry
• Physalis wrightii - Wright's groundcherry
• Plantago lanceolata - buckhorn plantain, English plantain
• Plantago major - broadleaf plantain, great plantain
• Plantago virginica - paleseed plantain
• Poa annua - anual bluegrass
• Poa pratensis - Kentucky bluegrass
• Polygonum aviculare - yard knotweed, prostrate knotweed
• Polygonum cuspidatum - Japanese knotweed
• Polypogon interruptus - ditch polypogon
• Polypogon viridis - water-bent
• Portulaca oleracea - garden purslane, hogweed
• Potentilla recta - sulfur cinquefoil
• Proboscidea louisianica - devils claw
• Prosopis glandulosa - honey mesquite
• Prosopis velutina - velvet mesquite
• Ricinus communis - castorbean
• Rosa multiflora - multiflora rose
• Rubus armeniacus - Himalaya blackberry
• Rubus leucodermis - western raspberry
• Rumex crispus - curly dock
• Rumex pulcher - fiddleneck dock
• Salix exigua - coyote willow
• Salix gooddingii - Gooddings black willow
• Salix laevigata - red willow
• Salix lasiolepis - arroyo willow
• Salsola collina - spineless Russian thistle
• Salsola paulsenii - barbwire Russian thistle
• Salsola tragus - Russian thistle, tumbleweed
• Salvia aethiopis - Mediterranean sage
• Salvia virgata - wand sage
• Sarcostemma cynanchoides - climbing milkweed
• Schismus arabicus - Arabian Mediterraneangrass
• Schismus barbatus - common mediterraneangrass
• Sclerochloa dura - hardgrass
• Senecio vulgaris - common groundsel
• Setaria adhaerens - clinging bristlegrass, bur bristlegrass, bristly foxtail
• Setaria gracilis - knotroot foxtail
• Setaria pumila - yellow foxtail, yellow bristlegrass
• Setaria viridis - green foxtail, green bristlegrass
• Silene vulgaris - bladder campion
• Sisymbrium altissimum - tall hedge mustard
• Sisymbrium irio - London rocket
• Sisymbrium loeselii - tall hedge mustard
• Sisymbrium orientale - Oriental mustard
• Solanum americanum - American black nightshade
• Solanum dimidiatum - robust horsenettle
• Solanum douglasii - Douglas nightshade
• Solanum elaeagnifolium - silverleaf nightshade, white horsenettle
• Solanum lanceolatum - lanceleaf nightshade
• Solanum physalifolium - hairy nightshade
• Solanum rostratum - buffalo bur
• Solidago canadensis - goldenrod
• Sonchus oleraceus - common sow-thistle
• Sorghum halepense - Johnsongrass
• Sphaerophysa salsula - swainsonpea
• Sporobolus cryptandrus - sand dropseed
• Sporobolus vaginiflorus - poverty dropseed
• Stellaria media - common chickweed
• Taeniatherum caput-medusae - medusahead
• Tamarix canariensis - Canary Island tamarisk
• Tamarix chinensis - saltcedar
• Tamarix gallica - French tamarisk
• Tamarix parviflora - smallflower tamarisk
• Tamarix ramosissima - saltcedar
• Tanacetum parthenium - feverfew
• Taraxacum officinale - common dandelion
• Toxicodendron rydbergii - poison ivy
• Trianthema portulacastrum - horsepurslane
• Tribulus terrestris - puncturevine
• Trifolium campestre - large hop clover
• Trifolium repens - white clover
• Typha latifolia - common cattail
• Ulmus pumila - Siberian elm
• Urtica dioica - stinging nettle
• Urtica urens - burning nettle
• Verbascum thapsus - common mullein
• Veronica peregrina - western purslane speedwell
• Vinca major - big periwinkle
• Vinca minor - common periwinkle
• Xanthium spinosum - spiny cocklebur
• Xanthium strumarium - rough cocklebur
• Yucca glauca - yucca
• Zygophyllum fabago - Syrian beancaper