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Table 1 Brine shrimp toxicity at 24 h exposure to plant extracts

From: Biological screening of selected Pacific Northwest forest plants using the brine shrimp (Artemia salina) toxicity bioassay

Plant family and species

Common name

Part used

LC50 (µg/ml)

95 % CI

Aceraceae

    

 Acer circinatum

Vine maple

Bark

>1000

 
  

Leaves

>1000

 

 Acer macrophyllum

Big leaf maple

Bark

>1000

 
  

Catkins

>1000

 

Adoxaceae

    

 Sambucus nigra subsp. caerulea

Blue elderberry

Bark

>1000

 
 

Berries

>1000

 

 Sambucus racemosa

Red elderberry

Bark

>1000

 

 Viburnum ellipticum

Oregon viburnum

Leaves

>1000

 

Amaranthaceae

    

 Amaranthus retroflexus

Pigweed

Aerial parts

>1000

 

Apocynaceae

    

 Apocynum androsaemifolium

Spreading dogbane

Aerial parts

88

55–141

Araceae

    

 Lysichiton americanus

Skunk cabbage

Flowers

>1000

 
  

Leaves

>1000

 
  

Roots

>1000

 

Araliaceae

    

 Oplopanax horridum

Devil’s club

Berries-green

338

292–573

  

Berries-red

239

187–279

  

Leaves

>1000

 
  

Petioles

237

153–372

  

Root bark

21

13–32

  

Stem bark

35

23–51

Aristolochiaceae

    

 Asarum caudatum

Wild ginger

Aerial parts

565

364–918

Aquifoliaceae

    

 Ilex aquifolium

Holly

Leaves

>1000

 

Berberidaceae

    

 Berberis aquifolium

Tall Oregon grape

Berries green

305

245–352

Berry stems

>1000

 

Flower heads

608

404–4630

 Berberis nervosa

Cascade Oregon grape

Leaves

>1000

 

Roots

>1000

 

 Berberis repens

Low Oregon grape

Leaves

>1000

 

Betulaceae

    

 Alnus rubra

Red alder

Bark

>1000

 
  

Leaves

>1000

 

 Corylus cornuta

Hazelnut

Bark

>1000

 

Boraginaceae

    

 Mertensia paniculata

Tall bluebell

Aerial parts

>1000

 

 Myosotis laxa

Small flowered forget-me-not

Aerial parts

>1000

 

 Symphytum officinale

Comfrey

Aerial parts

>1000

 

Caprifoliaceae

    

 Lonicera involucrata

Black twin-berry

Leaves

>1000

 

Bark

>1000

 

 Symphoricarpos albus

Snowberry

Berries

>1000

 
  

Leaves

>1000

 

Chenopodiaceae

    

 Sarcocornia perennis

Pickleweed

Leaves

>1000

 

Compositae (Asteraceae)

    

 Achillea millefolium

Yarrow

Aerial parts

565

364–918

  

Leaves only

300

216–402

  

Seeds

>1000

 

 Ambrosia chamissonis

Silver burweed

Aerial parts

>1000

 

 Anaphalis margaritacea

Pearly everlasting

Aerial parts

808

403–2800

 Antennaria geyeri

Pussy toes (Geyer)

Aerial parts

>1000

 

 Anthemis cotula

Dog fennel

Aerial parts

246

182–320

  

Roots

>1000

 

 Bellis perennis

Bellis (English daisy)

Aerial parts

454

282–760

 Centaurea xmoncktonii

Meadow

Aerial parts

277

203–355

 

knapweed

Roots

109

96–152

 Centaurea solstitialis

Yellow star-

Aerial parts

>1000

 
 

thistle

Roots

693

423–1349

 Centaurea stoebe subsp. micranthos

Spotted knapweed

Aerial parts

>1000

 

Roots

87

56–135

 Chrysothamnus viscidiflorus

Rabbit brush (Green)

Aerial parts

>1000

 

 Cichorium intybus

Chicory

Aerial parts

>1000

 

 Cirsium vulgare

Bull thistle

Aerial parts

>1000

 

 Conyza canadensis

Horseweed

Aerial parts

159

96–267

 Ericameria nauseosa

Rabbit brush (Gray)

Aerial parts

579

360–1006

 Eriophyllum lanatum

Woolly sunshine

Aerial parts

>1000

 

 Grindelia integrifolia

Gumweed

Aerial parts

173

107–276

  

Roots

99

75–116

 Hypochaeris glabra

Cat’s ear

Aerial parts

>1000

 

 Lapsana communis

Nipplewort

Aerial parts

>1000

 

 Leucanthemum vulgare

Oxeye daisy

Aerial parts

16

10–25

  

Roots

164

139–183

 Madia sativa

Tarweed

Aerial parts

>1000

 

 Matricaria discoidea

Pineapple weed

Aerial parts

192

160–208

 Senecio jacobaea

Tansy ragwort

Aerial parts

>1000

 

 Solidago canadensis

Canada goldenrod

Aerial parts

827

458–2214

 Sonchus asper

Prickly sow

Leaves

>1000

 
 

thistle

Roots

>1000

 

 Symphyotrichum subspicatum

Douglas aster

Aerial parts

>1000

 

 Tanacetum vulgare

Common tansy

Aerial parts

62

39–93

 Tragopogon porrifolius

Salsify

Aerial parts

>1000

 

Convolvulaceae

    

 Convolvulus arvensis

Orchard morning glory

Aerial parts

>1000

 

Cornaceae

    

 Cornus nuttallii

Dogwood

Bark

>1000

 

Cupressaceae

    

 Callitropsis nootkatensis

Yellow-cedar

Foliage

42

27–65

  

Heartwood

89

53–114

  

Outer Bark

693

423–1349

  

Inner Bark

15

8–24

  

Sapwood

>1000

 

 Calocedrus decurrens

Incense cedar

Heartwood

55

35–80

  

Sapwood

>1000

 

 Cedrus deodara 1

Deodar cedar

Heartwood

15

9–24

  

Sapwood

36

30–39

 Chamaecyparis lawsoniana

Port Orford cedar

Heartwood

31

23–39

 ×Hesperotropsis leylandii

Leyland cypress

Heartwood

118

81–161

  

Sapwood

>1000

 

 Juniperus occidentalis

Juniper

Berries

>1000

 
 

(Western)

Leaves

>1000

 
 

Heartwood

66

56–77

 

Inner Bark

>1000

 
 

Outer Bark

>1000

 
 

Sapwood

189

116–338

Elaeagnaceae

    

 Shepherdia canadensis

Soapberry

Berries

387

255–571

  

Leaves

>1000

 
  

Leaves with twigs

>1000

 
  

Outer Bark

314

174–662

Ericaceae

    

 Arbutus menziesii

Pacific madrone

Inner Bark

>1000

 
  

Red berries

>1000

 

 Arctostaphylos columbiana

Hairy manzanita

Bark

>1000

 
  

Leaves

>1000

 

 Arctostaphylos patula

Green leaf manzanita

Aerial parts

>1000

 

 Arctostaphylos uva-ursi

Kinnikinnick

Berries-red Leaves/stems

>1000

 

>1000

 

 Chimaphila umbellata

Prince’s pine

Aerial parts

155

131–177

  

Stems

126

86–170

 Gaultheria shallon

Salal

Leaves

>1000

 

 Rhododendron macrophyllum

Pacific rhododendron

Bark

>1000

 

Leaves

>1000

 

Fagaceae

    

 Quercus garryana

White oak

Galls

>1000

 
  

Heartwood

301

195–468

  

Inner Bark

>1000

 
  

Leaves

>1000

 

Fumariaceae

    

 Dicentra formosa

Wild bleeding heart

Aerial parts

>1000

 

Geraniaceae

    

 Geranium dissectum

Cut-leaf geranium

Aerial parts

>1000

 

Iridaceae

    

 Iris tenax

Oregon iris

Aerial parts

>1000

 

Labiatae

    

 Prunella vulgaris

Heal all; Self-heal

Aerial parts

>1000

 

 Stachys cooleyae

Cooley’s hedge nettle (False stinging nettle)

Aerial parts

>1000

 

Lauraceae

    

 Umbellularia californica

Oregon myrtle

Heartwood

363

255–488

  

Sapwood

>1000

 

Leguminosae

    

 Cytisus scoparius

Scotch broom

Aerial parts

>1000

 

 Dalea ornata

Prairie clover

Aerial parts

157

95–257

  

Roots

313

121–1632

 Robinia pseudoacacia

Black locust

Heartwood

>1000

 

 Trifolium pratense

Red clover

Aerial parts

>1000

 

Liliaceae

    

 Camassia quamash

Camas

Aerial parts

212

150–952

  

Flowers

272

148–583

  

Leaves

446

256–905

 Prosartes smithii

Smith’s fairy bell

Aerial parts

>1000

 

Malvaceae

    

 Malva neglecta

Dwarf mallow

Aerial parts

>1000

 

Nyctaginaceae

    

 Abronia latifolia

Yellow sandverbena

Aerial parts

>1000

 

Onagraceae

    

 Chamerion angustifolium

Fireweed

Aerial parts

>1000

 

Oxalidaceae

    

 Oxalis oregana

Oxalis

Aerial parts

281

268–298

Pinaceae

    

 Abies grandis

Grand-fir

Needles (new)

>1000

 
  

Needles (old)

>1000

 

 Picea sitchensis

Sitka spruce

Needles

>1000

 

 Pinus monticola

Western white

Bark

>1000

 
 

pine

Needles

504

397–662

 Pinus ponderosa

Ponderosa pine

Bark

>1000

 
  

Heartwood

107

69–166

  

Needles

>1000

 
  

Sapwood

>1000

 

 Pseudotsuga menziesii

Douglas-fir

Cones-green

>1000

 
  

Heartwood

663

422–1153

  

Needles

>1000

 
  

Outer bark

>1000

 
  

Sapwood

>1000

 

 Tsuga heterophylla

Western

Cones-green

>1000

 
 

hemlock

Needles

>1000

 
  

Sapwood

>1000

 

Plantaginaceae

    

 Plantago spp.

Plantain

Aerial parts

>1000

 

Polygonaceae

    

 Rumex spp.

Dock

Roots

923

822–1537

Polypodiaceae

    

 Polypodium glycyrrhiza

Licorice fern

Roots

>1000

 

 Polystichum munitum

Sword fern

Leaves

>1000

 
  

Roots

>1000

 

 Pteridium aquilinum

Bracken fern

Roots

>1000

 

Portulacaceae

    

 Claytonia sibirica

Siberian miners’ lettuce

Aerial parts

>1000

 

Primulaceae

    

 Trientalis latifolia

Western starflower

Aerial parts

539

430–627

Ranunculaceae

    

 Clematis vitalba

Clematis

Aerial parts

>1000

 

 Delphinium trolliifolium

Delphinium

Aerial parts

304

190–489

 Ranunculus occidentalis

Western buttercup

Aerial parts

>1000

 

 Ranunculus repens

Creeping buttercup

Aerial parts

>1000

 

Rhamnaceae

    

 Rhamnus purshiana

Cascara

Bark

393

237–698

  

Leaves

247

186–667

Rosaceae

    

 Aruncus dioicus

Goat’s beard

Flowers

>1000

 
  

Leaves

>1000

 
  

Roots

>1000

 

 Crataegus douglasii

Black hawthorn

Berries-green

>1000

 
  

Leaves

>1000

 

 Holodiscus discolor

Ocean spray

Bark

>1000

 
  

Flowers

>1000

 
  

Leaves

>1000

 

 Malus fusca

Crabapple

Bark

>1000

 

 Oemleria cerasiformis

Indian-plum

Bark

>1000

 

Stems + leaves + berries

>1000

 Potentilla pacifica

Pacific silverweed

Leaves

632

298–2309

 Prunus spp.

Cherry

Leaves

>1000

 

Inner Bark

>1000

 

Outer Bark

490

354–614

 Purshia tridentata

Bitter-brush

Leaves

870

533–1857

Roots

691

545–884

Seeds

144

101–192

 Rosa nutkana

Nootka rose

Leaves

>1000

 

Stems

>1000

 Rubus parviflorus

Thimbleberry

Leaves

>1000

 

 Rubus spectabilis

Salmonberry

Bark

>1000

 

Leaves

>1000

 Rubus ursinus

Blackberry (trailing)

Aerial parts

>1000

 

 Sorbus scopulina

Mountain ash

Berries

318

308–328

Leaves

>1000

 

 Spiraea douglasii

Spirea

Aerial parts

>1000

 

Rubiaceae

    

 Galium aparine

Cleavers

Aerial parts

>1000

 

Salicaceae

    

 Populus spp.

Cottonwood

Outer Bark

>1000

 

Saxifragaceae

    

 Tellima grandiflora

Fringecup

Aerial parts

>1000

 

Scrophulariaceae

    

 Digitalis purpurea

Foxglove

Aerial parts

>1000

 

 Verbascum thapsus

Common mullein

Aerial parts

>1000

 

Roots

>1000

 

Solanaceae

    

 Solanum nigrum

Black nightshade

Aerial parts

662

422–1153

Taxaceae

    

 Taxus brevifolia

Pacific yew

Heartwood

>1000

 

Taxodiaceae

    

 Sequoiadendron giganteum

Giant sequoia

Needles

713

580–878

Heartwood

206

166–246

Umbelliferae

    

 Angelica arguta

Sharptooth angelica

Aerial parts

123

94–371

Roots

<10

2

 Daucus carota

Queen Anne’s lace

Aerial parts

>1000

 

 Foeniculum vulgare

Fennel

Aerial parts

>1000

 

 Heracleum maximum

Cow parsnip

Roots

249

167–384

Umbels

404

307–496

 Oenanthe sarmentosa

Pacific water parsley

Aerial parts

76

48–117

Urticaceae

    

 Urtica dioica

Stinging nettle

Aerial parts

>1000

 

Roots

>1000

 
  1. 1Endemic to the Indian subcontinent, collected from a tree farm in Oregon
  2. 210 µg/ml was the lowest concentration tested with mean mortality at 90 %