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logo Calflora  Illustrated Plant List 

List of early detection invasive species for the Tahoe Basin and Donner State Parks
32 PLANTS
Brachypodium distachyon    False brome,  Purple false brome
invasive non-native
Annual, Perennial grass

POACEAE

Brachypodium distachyon
© 2019 Ron Vanderhoff
Brachypodium distachyon
© 2021 John Rawlings
Brachypodium distachyon
© 2019 Ron Vanderhoff

Brassica nigra    Black mustard
invasive non-native
Annual herb

BRASSICACEAE

Brassica nigra
© 2021 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff
Brassica nigra
© 2019 Ron Vanderhoff

Carduus nutans    Musk thistle,  Nodding plumeless thistle
invasive non-native
Perennial herb

ASTERACEAE

Carduus nutans
© 2022 Bob Sweatt
Carduus nutans
© 2022 Bob Sweatt
Carduus nutans
© 2022 Bob Sweatt

Centaurea calcitrapa    Purple star thistle,  Red star thistle
invasive non-native
Annual, Perennial herb

ASTERACEAE

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

Centaurea diffusa    Diffuse knapweed,  White knapweed
invasive non-native
Perennial herb

ASTERACEAE

Centaurea diffusa
© 2020 David Greenberger
Centaurea diffusa
© 2022 Bob Sweatt
Centaurea diffusa
© 2019 Catherine Talbot

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

ASTERACEAE

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

Chondrilla juncea    Hogbite,  Skeleton weed
invasive non-native
Perennial herb

ASTERACEAE

Chondrilla juncea
© 2021 George Williams
Chondrilla juncea
© 2024 Mike Russler
Chondrilla juncea
© 2021 Bob Sweatt

Cirsium arvense    Canada thistle
invasive non-native
Perennial herb

ASTERACEAE

Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2012 Michael Mitchell
Cirsium arvense
© 2022 Donald Burk

Cytisus scoparius    Scotch broom,  Scotchbroom
invasive non-native
Shrub

FABACEAE

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

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

DIPSACACEAE

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

Dittrichia graveolens    Stinkwort
invasive non-native
Annual herb

ASTERACEAE

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

Elymus caput-medusae    Medusa head
invasive non-native
Annual grass

POACEAE

Elymus caput-medusae
© 2023 Ron Vanderhoff
Elymus caput-medusae
© 2019 Jennifer Mo
Elymus caput-medusae
© 2011 Steve Matson

Euphorbia oblongata    Eggleaf spurge
invasive non-native
Perennial herb

EUPHORBIACEAE

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

Euphorbia virgata    Leafy spurge
invasive non-native
Perennial herb

EUPHORBIACEAE

Euphorbia virgata
© 2023 Nikki Valentine
Euphorbia virgata
© 2019 Lenihan Mazur
Euphorbia virgata
© 2019 Lenihan Mazur

Holcus lanatus    Common velvetgrass,  Velvet grass,  Velvetgrass
invasive non-native
Perennial grass

POACEAE

Holcus lanatus
© 2019 Bill Haley
Holcus lanatus
© 2024 David popp
Holcus lanatus
© 2019 Bill Haley

Iris pseudacorus    Horticultural iris,  Paleyellow iris,  Yellowflag iris
invasive non-native
Perennial herb

IRIDACEAE

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

Isatis tinctoria    Dyer's woad,  Dyers woad
invasive non-native
Biennial, Perennial herb

BRASSICACEAE

Isatis tinctoria
© 2021 Steve Matson
Isatis tinctoria
© 2021 Steve Matson
Isatis tinctoria
© 2021 Steve Matson

Kochia scoparia    Common red sage,  Mexican fireweed,  Summer cypress
invasive non-native
Annual herb

CHENOPODIACEAE

Kochia scoparia
© 2013 Daniel Lubin
Kochia scoparia
© 2023 R.A. Chasey
Kochia scoparia
© 2013 Daniel Lubin

Lathyrus latifolius    Everlasting pea,  Perennial pea,  Perennial sweet pea
non-native
Perennial herb

FABACEAE

Lathyrus latifolius
© 2020 Jutta Burger
Lathyrus latifolius
© 2019 Cynthia Powell
Lathyrus latifolius
© 2021 Sherry Adams

Lepidium draba    Whitetop
invasive non-native
Perennial herb

BRASSICACEAE

Lepidium draba
© 2020 Ron Vanderhoff
Lepidium draba
© 2021 Mike Russler
Lepidium draba
© 2020 Ron Vanderhoff

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

BRASSICACEAE

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

Linaria dalmatica    Dalmatian toadflax
non-native
Perennial herb

PLANTAGINACEAE

Linaria dalmatica
© 2022 Jonathan Widdicombe
Linaria dalmatica
© 2022 Patrick Hoffman
Linaria dalmatica
© 2021 Diana Wing

Linaria vulgaris    Butter and eggs
invasive non-native
Perennial herb

PLANTAGINACEAE

Linaria vulgaris
© 2020 Bob Sweatt
Linaria vulgaris
© 2020 Bob Sweatt
Linaria vulgaris
© 2020 Bob Sweatt

Lunaria annua    Annual honesty,  Annual moonwort,  Honesty
non-native
Annual, Perennial herb

BRASSICACEAE

Lunaria annua
© 2022 Suzanne L. Weakley
Lunaria annua
© 2021 Lisa Berry
Lunaria annua
© 2021 Mike Russler

Lythrum salicaria    Purple loosestrife
invasive non-native
Perennial herb

LYTHRACEAE

Lythrum salicaria
© 2023 Donald Burk
Lythrum salicaria
© 2022 Eric Jennings
Lythrum salicaria
© 2020 Katie Rian

Onopordum acanthium ssp. acanthium    Scottish thistle
invasive non-native
Perennial herb

ASTERACEAE

Onopordum acanthium ssp. acanthium
© 2021 Diana Wing
Onopordum acanthium ssp. acanthium
© 2019 Greta Varien
Onopordum acanthium ssp. acanthium
© 2014 Ed King

Acroptilon repens    Russian knapweed
non-native
Perennial herb

ASTERACEAE

Acroptilon repens
© 2017 Barbara Boethling
Acroptilon repens
© 2014 Steve Matson
Acroptilon repens
© 2017 Barbara Boethling

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

ROSACEAE

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

Saponaria officinalis    Bouncing bet,  Bouncingbet,  Soapwort
invasive non-native
Perennial herb

CARYOPHYLLACEAE

Saponaria officinalis
© 2020 Bob Sweatt
Saponaria officinalis
© 2022 Mike Russler
Saponaria officinalis
© 2022 Mike Russler

Tanacetum vulgare    Common tansy
invasive non-native
Perennial herb

ASTERACEAE

Tanacetum vulgare
© 2011 Ramona Robison
Tanacetum vulgare
© 2005 George W. Hartwell
Tanacetum vulgare
© 2007 Louis-M. Landry

Tribulus terrestris    Puncture vine,  Puncturevine
invasive non-native
Annual herb

ZYGOPHYLLACEAE

Tribulus terrestris
© 2015 Steve Matson
Tribulus terrestris
© 2015 Steve Matson
Tribulus terrestris
© 2020 Ron Vanderhoff

Verbena litoralis    Seashore vervain
invasive non-native
Biennial, Perennial herb

VERBENACEAE

Verbena litoralis
© 2024 Alaine Arslan
Verbena litoralis
© 2011 Barry Brekcking
Verbena litoralis
© 2021 David popp