UC IPM Agricultural Weeds
logo Calflora Illustrated Plant List 
All plants mentioned as agricultural weeds on the UC Integrated Pest Management website: http://www.ipm.ucdavis.edu/
128 PLANTS
Abutilon theophrasti    Velvet leaf
non-native
Annual herb

MALVACEAE

Abutilon theophrasti Abutilon theophrasti
2002 Jennifer Forman 2008 Louis-M. Landry

Amaranthus albus    Tumbleweed
non-native
Annual herb

AMARANTHACEAE

Amaranthus albus Amaranthus albus
2006 Keir Morse 2004 Penn Martin II

Amaranthus deflexus    Large fruited amaranth
non-native
Annual herb

AMARANTHACEAE

Amaranthus deflexus Amaranthus deflexus
2012 Neal Kramer 2006 Luigi Rignanese

Amaranthus hybridus    Slim amaranth
non-native
Annual herb

AMARANTHACEAE

Amaranthus hybridus Amaranthus hybridus
2006 Adonis (Don) Tate 2006 Adonis (Don) Tate

Amaranthus palmeri    Palmer's amaranth
native
Annual herb

AMARANTHACEAE

Amaranthus palmeri Amaranthus palmeri
2011 Barry Breckling 2011 Christopher Bronny

Amaranthus retroflexus    Rough pigweed
non-native
Annual herb

AMARANTHACEAE

Amaranthus retroflexus Amaranthus retroflexus
2008 Louis-M. Landry 2005 Louis-M. Landry

Amsinckia douglasiana    Douglas' fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia douglasiana Amsinckia douglasiana
2013 Chris Winchell 2013 Chris Winchell

Amsinckia menziesii    Fiddleneck
native
Annual herb

BORAGINACEAE

Amsinckia menziesii Amsinckia menziesii
2012 Gary McDonald 2010 Dee E. Warenycia

Amsinckia menziesii var. intermedia    Common fiddleneck
(TJM2: Amsinckia intermedia)
native
Annual herb

BORAGINACEAE

Amsinckia menziesii var. intermedia Amsinckia menziesii var. intermedia
2004 George W. Hartwell 2012 Keir Morse

Avena fatua    Wildoats
invasive non-native
Annual herb

POACEAE

Avena fatua Avena fatua
2008 Keir Morse 2002 James B. Gratiot

Brassica juncea    India mustard
non-native
Annual herb

BRASSICACEAE


Brassica nigra    Black mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica nigra Brassica nigra
2011 Jorg & Mimi Fleige 2009 Barry Breckling

Brassica rapa    Common mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica rapa Brassica rapa
2008 Neal Kramer 2008 Neal Kramer

Brassica rapa var. amplexicaulis    Field mustard
non-native
Annual herb

BRASSICACEAE


Brassica rapa var. rapa    Field mustard
invasive non-native
Annual herb

BRASSICACEAE


Brassica tournefortii    Mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica tournefortii Brassica tournefortii
2008 lara hartley 2009 Thomas Stoughton

Bromus diandrus    Ripgut brome
invasive non-native
Annual herb

POACEAE

Bromus diandrus Bromus diandrus
2009 Neal Kramer 2004 Carol W. Witham

Bromus hordeaceus    Soft chess
invasive non-native
Annual herb

POACEAE

Bromus hordeaceus Bromus hordeaceus
2009 Keir Morse 2004 Carol W. Witham

Bromus tectorum    Downy chess
invasive non-native
Annual herb

POACEAE

Bromus tectorum Bromus tectorum
2008 Gary A. Monroe 2001 Joe DiTomaso

Calandrinia ciliata    Redmaids
native
Annual herb

MONTIACEAE

Calandrinia ciliata Calandrinia ciliata
2008 Neal Kramer 2006 Chris Wagner

Capsella bursa-pastoris    Shepherd's purse
non-native
Annual herb

BRASSICACEAE

Capsella bursa-pastoris Capsella bursa-pastoris
2007 Carol W. Witham 2008 Gary McDonald

Cenchrus longispinus    Mat sandbur
invasive non-native
Annual herb

POACEAE

Cenchrus longispinus Cenchrus longispinus
2005 Steve Matson 2005 Steve Matson

Centaurea solstitialis    Yellow starthistle
invasive non-native
Annual herb

ASTERACEAE

Centaurea solstitialis Centaurea solstitialis
2004 Carol W. Witham 2008 Luigi Rignanese

Chamaesyce maculata    Spotted spurge
non-native
Annual herb

EUPHORBIACEAE

Chamaesyce maculata Chamaesyce maculata
2008 Keir Morse 2008 Keir Morse

Chamomilla suaveolens    Pineapple weed
(TJM2: Matricaria discoidea)
non-native
Annual herb

ASTERACEAE

Chamomilla suaveolens Chamomilla suaveolens
2008 Keir Morse 2008 Steve Matson

Chenopodium album    Lambs quarters
non-native
Annual herb

CHENOPODIACEAE

Chenopodium album Chenopodium album
2008 Keir Morse 2005 Louis-M. Landry

Chenopodium murale    Nettle leaf goosefoot
non-native
Annual herb

CHENOPODIACEAE

Chenopodium murale Chenopodium murale
2009 Zoya Akulova 2004 Debra Valov

Cirsium arvense    Canada thistle
invasive non-native
Perennial herb

ASTERACEAE

Cirsium arvense Cirsium arvense
2008 Keir Morse 2007 Luigi Rignanese

Claytonia perfoliata    Miner's lettuce
native
Annual herb

MONTIACEAE

Claytonia perfoliata Claytonia perfoliata
2007 Neal Kramer 2007 Carol W. Witham

Convolvulus arvensis    Field bindweed
invasive non-native
Perennial herb, Vine

CONVOLVULACEAE

Convolvulus arvensis Convolvulus arvensis
2005 Steve Matson 2008 Dr. Amadej Trnkoczy

Conyza bonariensis    Flax-leaved horseweed
(TJM2: Erigeron bonariensis)
non-native
Annual herb

ASTERACEAE

Conyza bonariensis Conyza bonariensis
2009 Neal Kramer 2008 Jorg Fleige

Conyza canadensis    Horseweed
(TJM2: Erigeron canadensis)
native
Annual herb

ASTERACEAE

Conyza canadensis Conyza canadensis
2005 Luigi Rignanese 2009 Neal Kramer

Coronopus didymus    Lesser swine cress
(TJM2: Lepidium didymum)
non-native
Annual herb

BRASSICACEAE

Coronopus didymus Coronopus didymus
2007 Neal Kramer 2009 Neal Kramer

Croton setigerus    Dove weed
native
Annual herb

EUPHORBIACEAE

Croton setigerus Croton setigerus
2001 Steven Thorsted 2001 Jeff Abbas

Cuscuta approximata    Alfalfa dodder
non-native
Annual herb, Vine (parasitic)

CONVOLVULACEAE


Cuscuta campestris    Field dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta campestris Cuscuta campestris
2010 Vernon Smith 1999 Doreen L. Smith

Cuscuta indecora    Big seed alfalfa dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta indecora Cuscuta indecora
2011 Sierra Pacific Industries 2011 Sierra Pacific Industries

Cuscuta japonica    Japanese dodder
invasive non-native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta japonica Cuscuta japonica
2009 Barry Rice 2009 Barry Rice

Cuscuta leptantha    Slender dodder
non-native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta leptantha Cuscuta leptantha
2008 Neal Kramer 2008 Neal Kramer

Cuscuta pentagona    Western field dodder
native
Annual herb, Vine (parasitic)

CONVOLVULACEAE

Cuscuta pentagona Cuscuta pentagona
2010 Vernon Smith 2007 Dr. Mark S. Brunell

Cynodon dactylon    Bermuda grass
invasive non-native
Perennial herb

POACEAE

Cynodon dactylon Cynodon dactylon
2008 Keir Morse 2006 Luigi Rignanese

Cyperus esculentus    Nut grass
native
Perennial herb

CYPERACEAE

Cyperus esculentus Cyperus esculentus
2008 Louis-M. Landry 2009 Vince Scheidt

Cyperus rotundus    Nutgrass
invasive non-native
Perennial herb

CYPERACEAE

Cyperus rotundus Cyperus rotundus
2005 Luigi Rignanese 2007 Luigi Rignanese

Datura stramonium    Jimson weed
non-native
Annual herb

SOLANACEAE

Datura stramonium Datura stramonium
2004 Joseph Dougherty/ecology.org 2005 Dr. Amadej Trnkoczy

Digitaria ischaemum    Smooth crabgrass
non-native
Annual herb

POACEAE

Digitaria ischaemum Digitaria ischaemum
2006 Dean Wm. Taylor, Ph.D. 2006 Steve Matson

Digitaria sanguinalis    Crabgrass
non-native
Annual herb

POACEAE

Digitaria sanguinalis Digitaria sanguinalis
2010 Louis-M. Landry 2009 Zoya Akulova

Echinochloa colona    Jungle rice
non-native
Annual herb

POACEAE

Echinochloa colona Echinochloa colona
2008 John Dittes 2006 Luigi Rignanese

Echinochloa crus-galli    Barnyard grass
non-native
Annual herb

POACEAE

Echinochloa crus-galli Echinochloa crus-galli
2003 George W. Hartwell 2005 Luigi Rignanese

Eleusine indica    Goose grass
non-native
Annual herb

POACEAE

Eleusine indica Eleusine indica
2005 Luigi Rignanese 2008 Steve Matson

Epilobium brachycarpum    Willow herb
native
Annual herb

ONAGRACEAE

Epilobium brachycarpum Epilobium brachycarpum
2007 Ron Wolf 2007 Neal Kramer

Eragrostis barrelieri    Mediterranean lovegrass
non-native
Annual herb

POACEAE

Eragrostis barrelieri Eragrostis barrelieri
2007 Steve Matson 2007 Steve Matson

Eragrostis cilianensis    Stinkgrass
non-native
Annual herb

POACEAE

Eragrostis cilianensis Eragrostis cilianensis
2005 Luigi Rignanese 2005 Luigi Rignanese

Eragrostis curvula    Weeping lovegrass
non-native
Perennial herb

POACEAE


Eragrostis lehmanniana    Lehmann lovegrass
non-native
Perennial herb

POACEAE


Eragrostis minor    Little lovegrass
non-native
Annual herb

POACEAE


Erodium botrys    Big heron bill
invasive non-native
Annual herb

GERANIACEAE

Erodium botrys Erodium botrys
2002 James B. Gratiot 2004 Carol W. Witham

Erodium cicutarium    Coastal heron's bill
invasive non-native
Annual herb

GERANIACEAE

Erodium cicutarium Erodium cicutarium
2009 Keir Morse 2008 Steve Matson

Erodium moschatum    Whitestem filaree
invasive non-native
Annual herb

GERANIACEAE

Erodium moschatum Erodium moschatum
2007 Luigi Rignanese 2003 Michael Charters

Festuca arundinacea    Reed fescue
invasive non-native
Perennial herb

POACEAE

Festuca arundinacea Festuca arundinacea
2008 Keir Morse 2008 Steve Matson

Gnaphalium collinum    Creeping cudweed
(TJM2: Euchiton gymnocephalus)
non-native
Perennial herb

ASTERACEAE

Gnaphalium collinum Gnaphalium collinum
2008 Zoya Akulova 2009 Zoya Akulova

Gnaphalium luteo-album    Jersey cudweed
(TJM2: Pseudognaphalium luteoalbum)
non-native
Annual herb

ASTERACEAE

Gnaphalium luteo-album Gnaphalium luteo-album
2008 Jorg Fleige 2007 Neal Kramer

Gnaphalium purpureum    Featherweed
(TJM2: Gamochaeta ustulata)
native
Perennial herb

ASTERACEAE

Gnaphalium purpureum Gnaphalium purpureum
2008 Neal Kramer 2007 Neal Kramer

Gnaphalium stramineum    cottonbatting plant
(TJM2: Pseudognaphalium stramineum)
native
Perennial herb

ASTERACEAE

Gnaphalium stramineum Gnaphalium stramineum
2007 Neal Kramer 2009 Neal Kramer

Helianthus annuus    Hairy leaved sunflower
native
Annual herb

ASTERACEAE

Helianthus annuus Helianthus annuus
2003 George W. Hartwell 2007 Louis-M. Landry

Helianthus ciliaris    Blueweed
invasive non-native
Perennial herb

ASTERACEAE

Helianthus ciliaris Helianthus ciliaris
2001 CDFA 2001 CDFA

Helianthus maximilianii    Maximilian sunflower
non-native
Perennial herb

ASTERACEAE

Helianthus maximilianii
2011 Gina Darin

Helianthus petiolaris    Prairie sunflower
non-native
Perennial herb

ASTERACEAE

Helianthus petiolaris Helianthus petiolaris
2010 Ron Wolf 2010 Ron Wolf

Helianthus tuberosus    Jerusalem artichoke
non-native
Perennial herb

ASTERACEAE

Helianthus tuberosus Helianthus tuberosus
2011 Nick Kurzenko 2005 Luigi Rignanese

Hemizonia congesta    Hayfield tarweed
native
Annual herb

ASTERACEAE

Hemizonia congesta Hemizonia congesta
2007 Neal Kramer 2009 Neal Kramer

Hordeum jubatum    Fox tail barley
native
Perennial herb

POACEAE

Hordeum jubatum Hordeum jubatum
2009 Barry Rice 2005 Louis-M. Landry

Hordeum murinum ssp. leporinum    Farmer's foxtail
non-native
Annual herb

POACEAE

Hordeum murinum ssp. leporinum Hordeum murinum ssp. leporinum
2009 Keir Morse 2004 Carol W. Witham

Hypochaeris radicata    Hairy cats ear
invasive non-native
Perennial herb

ASTERACEAE

Hypochaeris radicata Hypochaeris radicata
2008 Sean B. Smith 2008 Keir Morse

Kickxia elatine    Sharp point fluellin
non-native
Perennial herb

PLANTAGINACEAE

Kickxia elatine Kickxia elatine
2008 Keir Morse 2005 Michael Charters

Kickxia spuria    Fluellin
non-native
Perennial herb

PLANTAGINACEAE

Kickxia spuria Kickxia spuria
2002 Tony Morosco 2007 Neal Kramer

Kochia scoparia    Summer cypress
invasive non-native
Annual herb

CHENOPODIACEAE

Kochia scoparia Kochia scoparia
2001 CDFA 2001 CDFA

Kyllinga brevifolia    Short leaf spikesedge
non-native
Perennial herb

CYPERACEAE

Kyllinga brevifolia Kyllinga brevifolia
2004 Steve Matson 2004 Steve Matson

Lactuca serriola    Prickly lettuce
invasive non-native
Annual herb

ASTERACEAE

Lactuca serriola Lactuca serriola
2003 Michael Charters 2006 Luigi Rignanese

Lamium amplexicaule    Henbit
non-native
Annual herb

LAMIACEAE

Lamium amplexicaule Lamium amplexicaule
2003 Michael Charters 2008 Gary McDonald

Leptochloa fascicularis    Bearded sprangletop
(TJM2: Leptochloa fusca ssp. fascicularis)
native
Annual herb

POACEAE

Leptochloa fascicularis Leptochloa fascicularis
2007 Tom Cochrane 2007 Tom Cochrane

Lolium multiflorum    Italian rye grass
(TJM2: Festuca perennis)
non-native
Perennial herb

POACEAE

Lolium multiflorum Lolium multiflorum
2004 Carol W. Witham 2004 Carol W. Witham

Lolium perenne    Italian rye grass
(TJM2: Festuca perennis)
non-native
Perennial herb

POACEAE

Lolium perenne Lolium perenne
2004 Carol W. Witham 2004 Carol W. Witham

Malva parviflora    Cheeseweed
non-native
Annual herb

MALVACEAE

Malva parviflora Malva parviflora
2002 Tom Annese 2008 Luigi Rignanese

Medicago polymorpha    California burclover
invasive non-native
Annual herb

FABACEAE

Medicago polymorpha Medicago polymorpha
2003 Michael Charters 2004 Carol W. Witham

Melilotus officinalis    Yellow sweetclover
invasive non-native
Annual, Biennial herb

FABACEAE

Melilotus officinalis Melilotus officinalis
2010 Jean Pawek 2005 Louis-M. Landry

Oxalis pes-caprae    Bermuda buttercup
invasive non-native
Perennial herb

OXALIDACEAE

Oxalis pes-caprae Oxalis pes-caprae
Jo-Ann Ordano 2005 California Academy of Sciences 2005 Luigi Rignanese

Panicum capillare    Old witch grass
native
Annual herb

POACEAE

Panicum capillare Panicum capillare
2008 Louis-M. Landry 2006 Louis-M. Landry

Paspalum dilatatum    Dallis grass
non-native
Perennial herb

POACEAE

Paspalum dilatatum Paspalum dilatatum
2006 Steven Thorsted 2002 Ann Dennis

Phalaris minor    Mediterranean canarygrass
non-native
Annual herb

POACEAE

Phalaris minor Phalaris minor
2010 Eliza Maher Hasselquist 2006 James M. Andre

Physalis acutifolia    Sharp leaf ground cherry
native
Annual herb

SOLANACEAE

Physalis acutifolia Physalis acutifolia
2009 Neal Kramer 2009 Neal Kramer

Physalis lancifolia    Narrow leaf tomatillo
non-native
Annual herb

SOLANACEAE


Physalis philadelphica    Tomatillo
non-native
Annual herb

SOLANACEAE

Physalis philadelphica Physalis philadelphica
2011 Louis-M. Landry 2006 Adonis (Don) Tate

Plantago lanceolata    Ribwort
invasive non-native
Perennial herb

PLANTAGINACEAE

Plantago lanceolata Plantago lanceolata
2007 Neal Kramer 2009 Lee Dittmann

Poa annua    Annual blue grass
non-native
Annual herb

POACEAE

Poa annua Poa annua
2002 Ann Dennis 2010 Neal Kramer

Polygonum arenastrum    prostrate knotweed
(TJM2: Polygonum aviculare ssp. depressum)
non-native
Annual, Perennial herb

POLYGONACEAE

Polygonum arenastrum Polygonum arenastrum
2009 Barry Breckling 2009 Barry Breckling

Polygonum convolvulus    Black bindweed
(TJM2: Fallopia convolvulus)
non-native
Annual herb

POLYGONACEAE

Polygonum convolvulus Polygonum convolvulus
2008 Keir Morse 2005 Louis-M. Landry

Polygonum persicaria    Spotted ladysthumb
(TJM2: Persicaria maculosa)
non-native
Annual herb

POLYGONACEAE

Polygonum persicaria Polygonum persicaria
2008 Keir Morse 2004 Carol W. Witham

Polypogon monspeliensis    Annual beard grass
invasive non-native
Annual herb

POACEAE

Polypogon monspeliensis Polypogon monspeliensis
2007 Neal Kramer 2006 Steve Matson

Portulaca oleracea    Common purslane
non-native
Annual herb

PORTULACACEAE

Portulaca oleracea Portulaca oleracea
2006 Jeff Abbas 2004 James M. Andre

Raphanus raphanistrum    Jointed charlock
non-native
Annual, Perennial herb

BRASSICACEAE

Raphanus raphanistrum Raphanus raphanistrum
2003 Yulan Tong 2004 Carol W. Witham

Rubus armeniacus    Himalayan blackberry
invasive non-native
Shrub

ROSACEAE

Rubus armeniacus Rubus armeniacus
2008 Thomas Stoughton 2009 Zoya Akulova

Rubus discolor    Himalayan blackberry
(TJM2: Rubus armeniacus)
invasive non-native
Shrub

ROSACEAE

Rubus discolor Rubus discolor
2008 Thomas Stoughton 2009 Zoya Akulova

Rubus leucodermis    White bark raspberry
native
Shrub

ROSACEAE

Rubus leucodermis Rubus leucodermis
2008 Zoya Akulova 2009 Zoya Akulova

Rubus parviflorus    Thimbleberry
native
Vine, Shrub

ROSACEAE

Rubus parviflorus Rubus parviflorus
2004 George W. Hartwell 2004 Robert Sivinski

Rubus ursinus    California blackberry
native
Vine, Shrub

ROSACEAE

Rubus ursinus Rubus ursinus
2008 Keir Morse 2007 Neal Kramer

Rumex acetosella    Sheep sorrel
invasive non-native
Perennial herb

POLYGONACEAE

Rumex acetosella Rumex acetosella
2007 Dr. Mark S. Brunell 2004 Carol W. Witham

Rumex crispus    curly dock
invasive non-native
Perennial herb

POLYGONACEAE

Rumex crispus Rumex crispus
2000 Joseph Dougherty/ecology.org 2005 Luigi Rignanese

Salsola tragus    Russian thistle
invasive non-native
Annual herb

CHENOPODIACEAE

Salsola tragus Salsola tragus
2008 Keir Morse 2001 Jeff Abbas

Senecio vulgaris    Common groundsel
non-native
Annual herb

ASTERACEAE

Senecio vulgaris Senecio vulgaris
2005 Steve Matson 2008 Neal Kramer

Setaria faberi    Foxtail
invasive non-native
Annual herb

POACEAE

Setaria faberi Setaria faberi
2007 Robert E. Preston, Ph.D. 2008 Louis-M. Landry

Setaria pumila    Yellow bristlegrass
non-native
Annual herb

POACEAE

Setaria pumila Setaria pumila
2007 Robert E. Preston, Ph.D. 2008 John Dittes

Setaria viridis    Green foxtail
non-native
Annual herb

POACEAE

Setaria viridis Setaria viridis
2005 Louis-M. Landry 2009 Zoya Akulova

Sisymbrium irio    London rocket
invasive non-native
Annual herb

BRASSICACEAE

Sisymbrium irio Sisymbrium irio
2006 Richard Zmasek 2007 Luigi Rignanese

Solanum nigrum    Black nightshade
non-native
Annual herb

SOLANACEAE

Solanum nigrum Solanum nigrum
2005 Dr. Amadej Trnkoczy 2005 Dr. Amadej Trnkoczy

Solanum physalifolium    Hoe nightshade
non-native
Shrub

SOLANACEAE


Sonchus arvensis    Perennial sow thistle
invasive non-native
Perennial herb

ASTERACEAE

Sonchus arvensis Sonchus arvensis
2006 Louis-M. Landry 2006 Louis-M. Landry

Sonchus asper    Spiny sowthistle
invasive non-native
Annual herb

ASTERACEAE

Sonchus asper Sonchus asper
2006 Louis-M. Landry 2005 Steve Matson

Sonchus asper ssp. asper    Sow thistle
invasive non-native
Annual herb

ASTERACEAE

Sonchus asper ssp. asper Sonchus asper ssp. asper
2008 Keir Morse 2006 Chris Wagner, SBNF

Sonchus oleraceus    Sow thistle
non-native
Annual herb

ASTERACEAE

Sonchus oleraceus Sonchus oleraceus
2004 Laura Ann Eliassen 2008 Gary McDonald

Sonchus tenerrimus    Slender sow thistle
non-native
Annual herb

ASTERACEAE

Sonchus tenerrimus Sonchus tenerrimus
2007 Luigi Rignanese 2007 Luigi Rignanese

Sorghum halepense    Johnsongrass
invasive non-native
Perennial herb

POACEAE

Sorghum halepense Sorghum halepense
2006 Luigi Rignanese 2009 Zoya Akulova

Stellaria media    Chickweed
non-native
Annual herb

CARYOPHYLLACEAE

Stellaria media Stellaria media
2001 Jeff Abbas 2008 Gary McDonald

Taraxacum officinale    Red seeded dandelion
invasive non-native
Perennial herb

ASTERACEAE

Taraxacum officinale Taraxacum officinale
2005 Louis-M. Landry 2002 Nick Kurzenko

Toxicodendron diversilobum    Poison oak
native
Vine, Shrub

ANACARDIACEAE

Toxicodendron diversilobum Toxicodendron diversilobum
2008 Gary McDonald 2008 Keir Morse

Tribulus terrestris    Puncture vine
invasive non-native
Annual herb

ZYGOPHYLLACEAE

Tribulus terrestris Tribulus terrestris
2004 James M. Andre 2004 James M. Andre

Trifolium repens    White clover
non-native
Perennial herb

FABACEAE

Trifolium repens Trifolium repens
2007 Steve Matson 2007 Dr. Amadej Trnkoczy

Urtica urens    Annual stinging nettle
non-native
Annual herb

URTICACEAE

Urtica urens Urtica urens
2008 Gary McDonald 2008 Zoya Akulova

Veronica persica    Bird's eye speedwell
non-native
Annual herb

PLANTAGINACEAE

Veronica persica Veronica persica
2011 Robert Hamilton 2009 Keir Morse

Xanthium strumarium    Cocklebur
native
Annual herb

ASTERACEAE

Xanthium strumarium Xanthium strumarium
2008 John Dittes 2008 Louis-M. Landry

 

 

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