Calflora Illustrated Plant List

High priority invasive plant species for early detection in the Golden Gate National Recreation Area (GGNRA). High priority species are typically not widespread in GGNRA and/or are feasible to control in many places.
111 PLANTS
Acacia melanoxylon    Blackwood acacia
invasive non-native
limited

Tree

FABACEAE

Acacia melanoxylon
© 2022 Julian Geoghegan
Acacia melanoxylon
© 2019 Julian Geoghegan
Acacia melanoxylon
© 2023 Jennifer Mo

Acacia paradoxa    Kangaroo thorn
invasive non-native
watch (high risk)

Shrub

FABACEAE

Acacia paradoxa
© 2022 Rocky Bajada
Acacia paradoxa
© 2022 Katherine Stratton
Acacia paradoxa
© 2022 Katherine Stratton

Aegilops triuncialis    Barbed goatgrass
invasive non-native
high

Annual grass

POACEAE

Aegilops triuncialis
© 2008 Steve Matson
Aegilops triuncialis
© 2008 Steve Matson
Aegilops triuncialis
© 2018 Scott Oneto

Ageratina adenophora    Sticky snakeroot,  Thoroughwort
invasive non-native
moderate

Perennial herb

ASTERACEAE

Ageratina adenophora
© 2019 Ron Vanderhoff
Ageratina adenophora
© 2017 Keir Morse
Ageratina adenophora
© 2019 Ron Vanderhoff

Agrostis avenacea    Pacific bentgrass
invasive non-native
limited

Perennial grass

POACEAE

Agrostis avenacea
© 2025 Ron Vanderhoff
Agrostis avenacea
© 2025 Ron Vanderhoff
Agrostis avenacea
© 2022 Donald Burk

Ailanthus altissima    Ailanthus,  Tree of heaven
invasive non-native
moderate

Tree

SIMAROUBACEAE

Ailanthus altissima
© 2022 Jenny Gossett
Ailanthus altissima
© 2022 Jenny Gossett
Ailanthus altissima
© 2020 Julie A. Kierstead

Albizia lophantha    Albizia,  Plume acacia,  Stink bean
non-native
watch (high risk)

Tree, Shrub

FABACEAE

Albizia lophantha
© 2020 Ron Vanderhoff
Albizia lophantha
© 2020 Ron Vanderhoff
Albizia lophantha
© 2020 Ron Vanderhoff

Allium vineale    Vineyard onion,  Wild garlic
invasive non-native

Perennial herb (bulb)

ALLIACEAE

Allium vineale
© 2017 dave hood
Allium vineale
© 2022 Emily R. Allen
Allium vineale
© 2017 dave hood

Ammophila arenaria    Beachgrass,  European beach grass,  European beachgrass
invasive non-native
high

Perennial grass

POACEAE

Ammophila arenaria
© 2016 Steve Matson
Ammophila arenaria
© 2016 Steve Matson
Ammophila arenaria
© 2018 Sarah Inman

Ammophila breviligulata    American beach grass,  American beachgrass
non-native

Perennial grass

POACEAE

Ammophila breviligulata
© 2014 Trent M. Draper
Ammophila breviligulata
© 2014 Trent M. Draper
Ammophila breviligulata
© 2014 Trent M. Draper

Anthoxanthum odoratum    Sweet vernal grass,  Sweet vernalgrass
invasive non-native
limited

Annual, Perennial grass

POACEAE

Anthoxanthum odoratum
© 2017 Steve Matson
Anthoxanthum odoratum
© 2017 Steve Matson
Anthoxanthum odoratum
© 2017 Steve Matson

Aptenia cordifolia    Baby sun rose,  Dew plant
non-native

Perennial herb

AIZOACEAE

Aptenia cordifolia
© 2022 Ron Vanderhoff
Aptenia cordifolia
© 2022 Ron Vanderhoff
Aptenia cordifolia
© 2022 Ron Vanderhoff

Arctotheca calendula    Cape weed
invasive non-native
moderate

Annual, Perennial herb

ASTERACEAE

Arctotheca calendula
© 2021 Patrick Hoffman
Arctotheca calendula
© 2023 Nancy Poss
Arctotheca calendula
© 2016 Andrea Pickart

Arctotheca prostrata    prostrate cape weed,  creeping capeweed
invasive non-native
moderate

Annual, Perennial herb

ASTERACEAE

Arctotheca prostrata
© 2024 David Wolfson
Arctotheca prostrata
© 2020 Lenihan Mazur
Arctotheca prostrata
© 2021 David Wolfson

Arundo donax    Giant reed
invasive non-native
high

Perennial grass

POACEAE

Arundo donax
© 2013 Miriam Sachs Martin
Arundo donax
© 2023 Ron Vanderhoff
Arundo donax
© 2021 Ron Vanderhoff

Berberis darwinii    Darwin's berberis
invasive non-native
watch (high risk)

Shrub

BERBERIDACEAE

Berberis darwinii
© 2018 Abbot Chambers
Berberis darwinii
© 2016 Greg O'Connell
Berberis darwinii
© 2022 David Strauch

Brachypodium sylvaticum    Slender false brome
invasive non-native
moderate

Perennial grass

POACEAE

Brachypodium sylvaticum
© 2018 Ecological Concerns Inc
Brachypodium sylvaticum
© 2021 SMCP NRM Intern
Brachypodium sylvaticum
© 2020 John Rawlings

invasive non-native

Annual grass

POACEAE

Bromus madritensis ssp. rubens
© 2015 Chris Jaster
Bromus madritensis ssp. rubens
© 2015 jamie smith
Bromus madritensis ssp. rubens
© 2018 Gary McDonald

Bromus tectorum    Cheatgrass, downy brome,  Downy brome grass,  Downy chess
invasive non-native
high

Annual grass

POACEAE

Bromus tectorum
© 2022 Ron Vanderhoff
Bromus tectorum
© 2022 Ron Vanderhoff
Bromus tectorum
© 2021 Elliot Gunnison

Buddleja davidii    Butterfly bush,  Summer lilac
invasive non-native
watch (high risk)

Tree, Shrub

SCROPHULARIACEAE

Buddleja davidii
© 2021 Ron Vanderhoff
Buddleja davidii
© 2021 Ron Vanderhoff
Buddleja davidii
© 2021 Ron Vanderhoff

Cakile maritima    European searocket,  Sea rocket
invasive non-native
limited

Annual herb

BRASSICACEAE

Cakile maritima
© 2019 Diane Etchison
Cakile maritima
© 2021 R.A. Chasey
Cakile maritima
© 2019 Diane Etchison

Calendula arvensis    Field marigold
non-native

Annual herb

ASTERACEAE

Calendula arvensis
© 2025 Mike Russler
Calendula arvensis
© 2018 David Wolfson
Calendula arvensis
© 2025 Mike Russler

Carduus acanthoides    Plumeless thistle,  Spiny plumeless thistle
invasive non-native
limited

Perennial herb

ASTERACEAE

Carduus acanthoides
© 2016 Catherine Talbot
Carduus acanthoides
© 2016 Catherine Talbot
Carduus acanthoides
© 2015 Catherine Talbot

Carex pendula    Hanging sedge
invasive non-native
watch (high risk)

Perennial grasslike herb

CYPERACEAE

Carex pendula
© 2015 Andrea Williams
Carex pendula
© 2022 Mitchell Blake
Carex pendula
© 2021 R.A. Chasey

Carpobrotus chilensis    Sea fig
invasive non-native
moderate

Perennial herb

AIZOACEAE

Carpobrotus chilensis
© 2016 Steve Matson
Carpobrotus chilensis
© 2021 Cynthia Powell
Carpobrotus chilensis
© 2018 Ron Vanderhoff

Carthamus lanatus    Woolly distaff thistle
invasive non-native
high

Annual herb

ASTERACEAE

Carthamus lanatus
© 2019 Lenihan Mazur
Carthamus lanatus
© 2019 Danielle Carney
Carthamus lanatus
© 2019 Danielle Carney

Centaurea calcitrapa    Purple starthistle,  Purple star thistle,  Red star thistle
invasive non-native
moderate

Annual, Perennial herb

ASTERACEAE

Centaurea calcitrapa
© 2021 R.A. Chasey
Centaurea calcitrapa
© 2019 MCOSD EDRR
Centaurea calcitrapa
© 2022 R.A. Chasey

Centaurea melitensis    Maltese star thistle,  Napa star thistle,  Tocalote
invasive non-native
moderate

Annual herb

ASTERACEAE

Centaurea melitensis
© 2019 Ron Vanderhoff
Centaurea melitensis
© 2020 Ron Vanderhoff
Centaurea melitensis
© 2020 Laura Anna Arellano

Centaurea solstitialis    Barnaby's thistle,  Yellow star thistle
invasive non-native
high

Annual herb

ASTERACEAE

Centaurea solstitialis
© 2022 Cynthia Powell
Centaurea solstitialis
© 2019 Arlee Montalvo
Centaurea solstitialis
© 2022 Mary Herr

Cestrum parqui    Chilean jessamine
invasive non-native
watch (high risk)

Tree

SOLANACEAE

Cestrum parqui
© 2011 Michael Perlmutter
Cestrum parqui
© 2011 Michael Perlmutter
Cestrum parqui
© 2011 Michael Perlmutter

Cirsium arvense    Canada thistle
invasive non-native
moderate

Perennial herb

ASTERACEAE

Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2021 patrickhoffman /
Patrick Hoffman

Clematis vitalba    Old man's beard,  Traveller's joy
invasive non-native
moderate

Vine

RANUNCULACEAE

Clematis vitalba
© 2015 ken moore
Clematis vitalba
© 2019 Cynthia Powell
Clematis vitalba
© 2015 Ellen Uhler

Conicosia pugioniformis    False ice plant,  Narrow leaved iceplant
invasive non-native
limited

Perennial herb

AIZOACEAE

Conicosia pugioniformis
© 2019 Michael Chasse
Conicosia pugioniformis
© 2016 VICKI RYAL
Conicosia pugioniformis
© 2022 Mike Russler

Cortaderia selloana    Uruguayan pampas grass
invasive non-native
high

Perennial grass

POACEAE

Cortaderia selloana
© 2023 Cynthia Powell
Cortaderia selloana
© 2023 Randall English
Cortaderia selloana
© 2022 Ron Vanderhoff

Crataegus monogyna    Hawthorn
invasive non-native
limited

Shrub

ROSACEAE

Crataegus monogyna
© Dana L. Brown
Crataegus monogyna
© pseudocreobotra
Crataegus monogyna
© Alison Young

Cynara cardunculus    Artichoke thistle,  Cardoon
invasive non-native
moderate

Perennial herb

ASTERACEAE

Cynara cardunculus
© 2021 R.A. Chasey
Cynara cardunculus
© 2022 Ron Vanderhoff
Cynara cardunculus
© 2022 Ron Vanderhoff

Cynodon dactylon    Bermuda grass,  Bermudagrass
invasive non-native
moderate

Perennial grass

POACEAE

Cynodon dactylon
© 2021 Ron Vanderhoff
Cynodon dactylon
© 2020 Ron Vanderhoff
Cynodon dactylon
© 2021 Ron Vanderhoff

Cytisus scoparius    Scotch broom,  Scotchbroom
invasive non-native
high

Shrub

FABACEAE

Cytisus scoparius
© 2016 Steve Matson
Cytisus scoparius
© 2016 Steve Matson
Cytisus scoparius
© 2016 Steve Matson

Cytisus striatus    Portuguese broom,  Striated broom
invasive non-native
moderate

Shrub

FABACEAE

Cytisus striatus
© 2021 Cynthia Powell
Cytisus striatus
© 2021 Cynthia Powell
Cytisus striatus
© 2021 Cynthia Powell

Dactylis glomerata    Orchard grass,  Orchardgrass
invasive non-native
limited

Perennial grass

POACEAE

Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 Steve Matson
Dactylis glomerata
© 2003 Steve Matson

Datura stramonium    Jimson weed,  Jimsonweed
non-native

Annual herb

SOLANACEAE

Datura stramonium
© 2011 Steve Matson
Datura stramonium
© 2011 Steve Matson
Datura stramonium
© 2020 Ron Vanderhoff

Delairea odorata    Cape ivy
invasive non-native
high

Perennial herb

ASTERACEAE

Delairea odorata
© 2019 Ron Vanderhoff
Delairea odorata
© 2019 Ron Vanderhoff
Delairea odorata
© 2019 Ron Vanderhoff

Digitalis purpurea    Purple foxglove
invasive non-native
limited

Perennial herb

PLANTAGINACEAE

Digitalis purpurea
© 2016 Steve Matson
Digitalis purpurea
© 2016 Steve Matson
Digitalis purpurea
© 2016 Steve Matson

Dipsacus fullonum    Fuller's teasel,  Fullers' teasel,  Wild teasel
invasive non-native
moderate

Perennial herb

DIPSACACEAE

Dipsacus fullonum
© 2022 Morgan Stickrod
Dipsacus fullonum
© 2018 Alex Spencer
Dipsacus fullonum
© 2021 Amber Bedgood

Dittrichia graveolens    Stinkwort
invasive non-native
moderate

Annual herb

ASTERACEAE

Dittrichia graveolens
© 2017 Bob Huttar
Dittrichia graveolens
© 2019 Ron Vanderhoff
Dittrichia graveolens
© 2019 Ron Vanderhoff

Drosanthemum floribundum    Ice plant,  Rosy ice plant,  Showy dewflower
non-native

Perennial herb

AIZOACEAE

Drosanthemum floribundum
© 2019 Michelle Karle
Drosanthemum floribundum
© 2019 David Wolfson
Drosanthemum floribundum
© 2015 Tori Bohlen

Echium plantagineum    Salvation echium,  Salvation jane,  Viper's bugloss
invasive non-native
watch (high risk)

Annual, Perennial herb

BORAGINACEAE

Echium plantagineum
© 2020 John Rawlings
Echium plantagineum
© 2019 Ken Hickman
Echium plantagineum
© 2011 Daniel Gluesenkamp

Ehrharta calycina    Perennial veldt grass,  Perennial veldtgrass
invasive non-native
high

Perennial grass

POACEAE

Ehrharta calycina
© 2020 David Greenberger
Ehrharta calycina
© 2019 Ron Vanderhoff
Ehrharta calycina
© 2018 Ron Vanderhoff

Eichhornia crassipes    Common water hyacinth
invasive non-native
high

Perennial herb

PONTEDERIACEAE

Eichhornia crassipes
© 2021 Mike Russler
Eichhornia crassipes
© 2015 Judy and Barry Breckling
Eichhornia crassipes
© 2023 Cynthia Powell

Eucalyptus globulus    Blue gum,  Tasmanian bluegum
invasive non-native
limited

Tree

MYRTACEAE

Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff
Eucalyptus globulus
© 2022 Ron Vanderhoff

Euphorbia oblongata    Eggleaf spurge,  Oblong spurge
invasive non-native
limited

Perennial herb

EUPHORBIACEAE

Euphorbia oblongata
© 2019 Michael Sturtevant
Euphorbia oblongata
© 2019 Randy Huey
Euphorbia oblongata
© 2017 Gary McDonald

Fallopia japonica    Japanese knotweed
invasive non-native
moderate

Perennial herb

POLYGONACEAE

Fallopia japonica
© 2021 Margot Cunningham
Fallopia japonica
© 2024 Jacob Martin
Fallopia japonica
© 2019 John Malpas

Festuca arundinacea    Alta fescue,  Reed fescue,  Tall fescue
invasive non-native
moderate

Perennial grass

POACEAE

Festuca arundinacea
© 2022 Cynthia Powell
Festuca arundinacea
© 2020 Robert Steers
Festuca arundinacea
© 2017 MCOSD EDRR

Fuchsia magellanica    Hardy fuchsia
non-native

Shrub

ONAGRACEAE

Fuchsia magellanica
© 2022 Erin Jackson
Fuchsia magellanica
© 2024 Donald Burk
Fuchsia magellanica
© 2024 Donald Burk

Geranium purpureum    little Robin
invasive non-native
limited

Annual, Biennial herb

GERANIACEAE

Geranium purpureum
© 2020 Jennifer Mo
Geranium purpureum
© 2023 Al Keuter
Geranium purpureum
© 2019 Cynthia Powell

Geranium robertianum    herb Robert
invasive non-native

Annual herb

GERANIACEAE

Geranium robertianum
© 2016 Steve Matson
Geranium robertianum
© 2016 Steve Matson
Geranium robertianum
© 2016 Steve Matson

Glyceria declinata    Waxy mannagrass
invasive non-native
moderate

Perennial grass

POACEAE

Glyceria declinata
© 2021 David popp
Glyceria declinata
© 2024 John Rawlings
Glyceria declinata
© 2022 David popp

Hedera canariensis    Canary ivy,  Algerian ivy
invasive non-native
high

Vine

ARALIACEAE

Hedera canariensis
© 2018 Sara Witt
Hedera canariensis
© 2018 Ron Vanderhoff
Hedera canariensis
© 2016 Ron Vanderhoff

Hedera helix    English ivy
invasive non-native
high

Vine, Shrub

ARALIACEAE

Hedera helix
© 2019 Claire Mallen
Hedera helix
© 2019 Ron Vanderhoff
Hedera helix
© 2022 Catherine Talbot

Helichrysum petiolare    Licorice plant
invasive non-native
limited

Shrub, Vine

ASTERACEAE

Helichrysum petiolare
© 2021 Elliot Gunnison
Helichrysum petiolare
© 2022 Mike Russler
Helichrysum petiolare
© 2022 Mike Russler

Hypericum canariense    Canary island st. johnswort
invasive non-native
moderate

Shrub

HYPERICACEAE

Hypericum canariense
© 2024 Ron Vanderhoff
Hypericum canariense
© 2024 Ron Vanderhoff
Hypericum canariense
© 2015 Leah Bedoian

Hypericum grandifolium    malfurada
invasive non-native
watch (high risk)

Shrub

HYPERICACEAE

Hypericum grandifolium
© 2019 Jill Adams
Hypericum grandifolium
© 2018 Steven Cognac
Hypericum grandifolium
© 2019 David Greenberger

Hypericum perforatum    Common st. johnswort,  Klamath weed,  Klamathweed
invasive non-native
limited

Perennial herb

HYPERICACEAE

Hypericum perforatum
© 2018 mark kircher
Hypericum perforatum
© 2020 Bob Sweatt
Hypericum perforatum
© 2022 Mary Conway

Ilex aquifolium    English holly,  Holly
invasive non-native
limited

Tree, Shrub

AQUIFOLIACEAE

Ilex aquifolium
© 2021 Cynthia Powell
Ilex aquifolium
© 2021 Donald Burk
Ilex aquifolium
© 2019 Tatiana Manzanillo

Iris pseudacorus    Horticultural iris,  Paleyellow iris,  Yellowflag iris
invasive non-native
limited

Perennial herb

IRIDACEAE

Iris pseudacorus
© 2020 Ron Vanderhoff
Iris pseudacorus
© 2024 Ron Vanderhoff
Iris pseudacorus
© 2017 Nick Graver

Lamiastrum galeobdolon    Yellow archangel
non-native

Perennial herb

LAMIACEAE

Lamiastrum galeobdolon
© 2021 Donald Burk
Lamiastrum galeobdolon
© 2016 Ramona Robison
Lamiastrum galeobdolon
© 2022 Katherine Stratton

Lepidium latifolium    Broad leaved pepper grass,  Broadleaved pepperweed,  Perennial pepperweed
invasive non-native
high

Perennial herb

BRASSICACEAE

Lepidium latifolium
© 2022 Donald Burk
Lepidium latifolium
© 2020 Ron Vanderhoff
Lepidium latifolium
© 2020 Joel A. Germond, Psy.D.

Leptospermum laevigatum    Australian tea tree
invasive non-native
watch (high risk)

Shrub

MYRTACEAE

Leptospermum laevigatum
© 2018 Emma Havstad
Leptospermum laevigatum
© 2018 Michael Chasse
Leptospermum laevigatum
© 2019 Patrick Furtado

Leucanthemum vulgare    Oxe eye daisy,  Oxeye daisy
invasive non-native
moderate

Perennial herb

ASTERACEAE

Leucanthemum vulgare
© Don Loarie
Leucanthemum vulgare
© 2019 Julian Geoghegan
Leucanthemum vulgare
© 2017 James Gonsman

Ligustrum lucidum    Glossy privet
invasive non-native
limited

Tree, Shrub

OLEACEAE

Ligustrum lucidum
© 2021 Alex Nikolaou
Ligustrum lucidum
© 2021 Ron Vanderhoff
Ligustrum lucidum
© 2017 Ron Vanderhoff

Limonium ramosissimum    Algerian sealavender
non-native
limited

Perennial herb

PLUMBAGINACEAE

Limonium ramosissimum
© 2017 Ron Vanderhoff
Limonium ramosissimum
© 2015 Ron Vanderhoff
Limonium ramosissimum
© 2018 Ron Vanderhoff L. durusculum LEFT. L. ramosissimum RIGHT.

Ludwigia hexapetala    Ludwigia,  Six petal water primrose
invasive non-native
high

Perennial herb

ONAGRACEAE

Ludwigia hexapetala
© 2021 Charles Russell
Ludwigia hexapetala
© 2021 Charles Russell
Ludwigia hexapetala
© 2019 Ron Vanderhoff

Ludwigia peploides ssp. montevidensis    Floating primrose willow,  Floating water primrose
invasive non-native

Perennial herb

ONAGRACEAE

Ludwigia peploides ssp. montevidensis
© 2021 Mike Russler
Ludwigia peploides ssp. montevidensis
© 2021 Mike Russler
Ludwigia peploides ssp. montevidensis
© 2021 Mike Russler

Maytenus boaria    Mayten
invasive non-native
watch (high risk)

Tree, Shrub

CELASTRACEAE

Maytenus boaria
© 2021 Julian Geoghegan
Maytenus boaria
© 2021 Julian Geoghegan
Maytenus boaria
© 2022 Jacob Martin

Mentha pulegium    Pennyroyal
invasive non-native
moderate

Perennial herb

LAMIACEAE

Mentha pulegium
© 2023 R.A. Chasey
Mentha pulegium
© 2022 R.A. Chasey
Mentha pulegium
© 2015 Chris Jaster

Mercurialis annua    Annual mercury
non-native

Annual herb

EUPHORBIACEAE

Mercurialis annua
© 2022 Ramona Robison
Mercurialis annua
© 2015 Julia King
Mercurialis annua
© 2022 Ramona Robison

Mesembryanthemum crystallinum    Common iceplant,  Crystalline ice plant
invasive non-native
moderate

Annual herb

AIZOACEAE

Mesembryanthemum crystallinum
© 2019 Nathan Taxel
Mesembryanthemum crystallinum
© 2020 ronvanderhoff /
Ron Vanderhoff
Mesembryanthemum crystallinum
© 2022 David Strauch

Myriophyllum aquaticum    Parrot feather watermilfoil,  Parrot's feather,  Parrotfeather
invasive non-native
high

Perennial herb (aquatic)

HALORAGACEAE

Myriophyllum aquaticum
© 2019 Patrick Furtado
Myriophyllum aquaticum
© 2016 Ross Hinderer
Myriophyllum aquaticum
© 2019 David popp

Myriophyllum spicatum    American milfoil,  Eurasian milfoil,  Spike watermilfoil
invasive non-native
high

Perennial herb

HALORAGACEAE

Myriophyllum spicatum
© 2020 Ron Vanderhoff
Myriophyllum spicatum
© 2020 Ron Vanderhoff
Myriophyllum spicatum
© 2020 Ron Vanderhoff

Nicotiana glauca    Tree tobacco
invasive non-native
moderate

Tree, Shrub

SOLANACEAE

Nicotiana glauca
© 2017 Steve Matson
Nicotiana glauca
© 2017 Steve Matson
Nicotiana glauca
© 2017 Steve Matson

Oxalis pes-caprae    Bermuda buttercup,  Sourgrass
invasive non-native
moderate

Perennial herb

OXALIDACEAE

Oxalis pes-caprae
© 2019 Gary McDonald
Oxalis pes-caprae
© 2017 Angelique Herman
Oxalis pes-caprae
© 2015 Richard Chasey

Pennisetum clandestinum    Kikuyu grass,  Kikuyugrass
invasive non-native
limited

Perennial grass

POACEAE

Pennisetum clandestinum
© 2020 Ron Vanderhoff
Pennisetum clandestinum
© 2020 Ron Vanderhoff
Pennisetum clandestinum
© 2017 Josh Nuzzo

Phalaris arundinacea    Reed canarygrass
native

Perennial grass

POACEAE

Phalaris arundinacea
© 2024 John Rawlings
Phalaris arundinacea
© 2020 Donald Burk
Phalaris arundinacea
© 2022 Dianne Lake

Phalaris elongata    Kolea grass
invasive non-native

Perennial grass

POACEAE

Phalaris elongata
© 2018 Steven Cognac
Phalaris elongata
© 2018 Sarah Inman
Phalaris elongata
© 2018 Steven Cognac

Phoenix canariensis    Canary island date palm
invasive non-native
limited

Tree

ARECACEAE

Phoenix canariensis
© 2020 Ron Vanderhoff
Phoenix canariensis
© 2022 Ron Vanderhoff
Phoenix canariensis
© 2021 James Bailey

Pittosporum crassifolium    Stiffleaf cheesewood,  Thick leaf box,  Thick leaved pittosporum
non-native

Tree, Shrub

PITTOSPORACEAE

Pittosporum crassifolium
© 2017 Nick Graver
Pittosporum crassifolium
© 2022 Lisa Schomaker
Pittosporum crassifolium
© 2017 Gregory Arena

Pyracantha angustifolia    Narrowleaf firethorn
invasive non-native
limited

Shrub

ROSACEAE

Pyracantha angustifolia
© 2018 Abbot Chambers
Pyracantha angustifolia
© 2019 Abbot Chambers
Pyracantha angustifolia
© 2018 Chris Qian

Rhamnus alaternus    Italian buckthorn
invasive non-native
watch (high risk)

Shrub

RHAMNACEAE

Rhamnus alaternus
© 2023 Jennifer Mo
Rhamnus alaternus
© 2022 Ron Vanderhoff
Rhamnus alaternus
© 2022 Ron Vanderhoff

Robinia pseudoacacia    Black locust
invasive non-native
limited

Tree

FABACEAE

Robinia pseudoacacia
© 2021 Ron Vanderhoff
Robinia pseudoacacia
© 2016 Ron Vanderhoff
Robinia pseudoacacia
© 2017 Ron Vanderhoff

Roldana petasitis    Velvet groundsel
non-native

Shrub

ASTERACEAE

Roldana petasitis
© 2014 Rolf T Borlinghaus
Roldana petasitis
© 2014 Rolf T Borlinghaus
Roldana petasitis
© 2014 Rolf T Borlinghaus

Romulea rosea var. australis    Rosy sand crocus,  Rosy sandcrocus
non-native
watch (high risk)

Perennial herb

IRIDACEAE

Romulea rosea var. australis
© 2019 Janice Kuch
Romulea rosea var. australis
© 2024 R.A. Chasey
Romulea rosea var. australis
© 2022 Leah Lord

Rosa rubiginosa    Sweet brier
non-native

Shrub

ROSACEAE

Rosa rubiginosa
© 2020 MCOSD EDRR
Rosa rubiginosa
© 2020 Jacob Martin
Rosa rubiginosa
© 2023 Robert Steers

Rubus armeniacus    Himalayan blackberry,  black berry,  Armenian blackberry
invasive non-native
high

Shrub

ROSACEAE

Rubus armeniacus
© 2014 James Gonsman
Rubus armeniacus
© 2018 Richard Spjut
Rubus armeniacus
© 2013 Michael Mitchell

Rytidosperma caespitosum    Tufted wallaby grass
invasive non-native
watch (high risk)

Perennial grass

POACEAE

Rytidosperma caespitosum
© 2022 Diana Wahl
Rytidosperma caespitosum
© 2019 Stephany Dery
Rytidosperma caespitosum
© 2016 Ron Vanderhoff

Rytidosperma penicillatum    Purple awned wallaby grass ,  Hairy oat grass,  Poverty grass
invasive non-native
limited

Perennial grass

POACEAE

Rytidosperma penicillatum
© 2019 Eric Wrubel
Rytidosperma penicillatum
© 2024 Laura Booth
Rytidosperma penicillatum
© 2018 Sarah Inman

Salsola soda    Alkali russian thistle,  Oppositeleaf russian thistle
invasive non-native
moderate

Annual herb

CHENOPODIACEAE

Salsola soda
© 2024 R.A. Chasey
Salsola soda
© 2022 Cynthia Powell
Salsola soda
© 2022 Cynthia Powell

Scabiosa atropurpurea    Pincushion flower,  Pincushion plant,  Pincushions
invasive non-native
watch (high risk)

Annual herb

DIPSACACEAE

Scabiosa atropurpurea
© 2021 Ken Lunders
Scabiosa atropurpurea
© 2021 Mike Russler
Scabiosa atropurpurea
© 2021 Ken Lunders

Solanum aviculare    New Zealand nightshade
invasive non-native
watch (high risk)

Shrub

SOLANACEAE

Solanum aviculare
© 2018 Ron Vanderhoff
Solanum aviculare
© 2018 Ron Vanderhoff
Solanum aviculare
© 2016 Hayley Ross

Sorghum halepense    Johnsongrass
invasive non-native

Perennial grass

POACEAE

Sorghum halepense
© 2014 Robert F Norris
Sorghum halepense
© 2019 Jennifer Mo
Sorghum halepense
© 2020 Julie A. Kierstead

Sparaxis tricolor    Harlequin flower,  Wandflower
non-native

Perennial herb

IRIDACEAE

Sparaxis tricolor
© 2018 Rachel Way
Sparaxis tricolor
© 2022 Tatiana Manzanillo
Sparaxis tricolor
© 2021 Jessica Cornelius

Spartium junceum    Gorse,  Spanish broom
invasive non-native
high

Shrub

FABACEAE

Spartium junceum
© 2020 Ron Vanderhoff
Spartium junceum
© 2021 Mary Herr
Spartium junceum
© 2020 Julie A. Kierstead

Spartina alterniflora    Salt-water cord grass
non-native

Perennial grass

POACEAE

Spartina alterniflora
© 2023 satkeson
Spartina alterniflora
© 2020 nsgreen
Spartina alterniflora
© 2017 ranadray

Stipa chaetophora    Stipoid ricegrass
non-native

Perennial grass

POACEAE

Stipa chaetophora
© 2017 Nick Graver
Stipa chaetophora
© 2011 Robert Steers/NPS
Stipa chaetophora
© 2017 Rachel Kesel

Stipa manicata    Andean tussockgrass
invasive non-native
limited

Perennial grass

POACEAE

Stipa manicata
© 2015 Sarah Minnick
Stipa manicata
© 2018 Eric Wrubel
Stipa manicata
© 2023 Rachel Suding

Stipa miliacea    Smilo grass
non-native

Perennial grass

POACEAE

Stipa miliacea
© 2021 Ron Vanderhoff
Stipa miliacea
© 2020 Ron Vanderhoff
Stipa miliacea
© 2022 Ron Vanderhoff

Stipa purpurata    Bristly needle grass
non-native

Perennial grass

POACEAE

Stipa purpurata
© 2017 Nick Graver
Stipa purpurata
© 2024 Eric Goldbeck-Dimon
Stipa purpurata
© 2020 Henry Inman

Nassella tenuissima    Mexican feathergrass
invasive non-native
limited

Perennial grass

POACEAE

Nassella tenuissima
© 2015 Neal Kramer
Nassella tenuissima
© 2015 Neal Kramer
Nassella tenuissima
© 2016 Barbara Boethling

Tradescantia fluminensis    Small leaf spiderwort
non-native

Perennial herb

COMMELINACEAE

Tradescantia fluminensis
© 2018 Amy Rapport
Tradescantia fluminensis
© 2016 David Greenberger
Tradescantia fluminensis
© 2019 David Greenberger

Trifolium angustifolium    Narrow leaved clover,  Narrowleaf crimson clover
non-native

Annual herb

FABACEAE

Trifolium angustifolium
© 2019 Gary McDonald
Trifolium angustifolium
© 2021 Mary Gerbic
Trifolium angustifolium
© 2022 SMCP NRM Intern

Ulex europaeus    Common gorse
invasive non-native
high

Shrub

FABACEAE

Ulex europaeus
© 2025 Cynthia Powell
Ulex europaeus
© 2025 Cynthia Powell
Ulex europaeus
© 2025 Cynthia Powell

Vinca major    Greater periwinkle,  Bigleaf periwinkle
invasive non-native
moderate

Perennial herb

APOCYNACEAE

Vinca major
© 2020 Julia Markey
Vinca major
© 2022 Ron Vanderhoff
Vinca major
© 2021 Ron Vanderhoff