Santa Monica Mountains National Recreation Area

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Search Results:
Invasive Plants

60 plants found




Family Aizoaceae (Magnoliopsida | Caryophyllanae | Caryophyllales)

1

Coastal Galenia *
Galenia pubescens

TJM1: Not Listed.
TJM2: Not Listed.

Family: Aizoaceae (FIG-MARIGOLD).
Generic common name: GALENIA.

Location: Topanga State Park: Eagle Springs Fire Road, chaparral, March 2010.

Characteristics: non-Native, White, Red, Small, Clusters, Simple, Herbaceous, Perennial, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Galenia pubescens

2

Coppery Mesemb *
Malephora crocea

Family: Aizoaceae (FIG-MARIGOLD).
Other common names: coppery mesembryanthemum, crocea iceplant.
Generic common name: MALEPHORA.

Location: County Line Beach: coastal strand, September 2007.

Characteristics: non-Native, Red, Large, Solitary, Simple, Herbaceous, Perennial, Winter, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Malephora crocea

3

Slender-Leaved Iceplant *
Mesembryanthemum nodiflorum

Family: Aizoaceae (FIG-MARIGOLD).
Generic common name: ICEPLANT.

Location: Cabrillo National Monument: sandy slopes on the ocean side of the peninsula, April 2009.

Characteristics: non-Native, White, Medium, Clusters, Solitary, Simple, Herbaceous, Perennial, Winter, Early Spring, Late Spring, Summer, Fall.

Note: Invasive exotic.

Thumbnail Picture of Mesembryanthemum nodiflorum


Family Alliaceae (Magnoliopsida | Lilianae | Asparagales)

4

Naples Garlic *
Allium neapolitanum

Family: Alliaceae (ONION, GARLIC), Liliaceae (LILY).
Other common names: white garlic, daffodil garlic.
Generic common name: ONION, GARLIC.

Location: Triunfo Canyon Park: disturbed area near the reservoir, March 2010.

Characteristics: non-Native, White, Large, Clusters, Simple, Herbaceous, Perennial, Early Spring.

Escaped non-native ornamental; can become invasive.

Thumbnail Picture of Allium neapolitanum


Family Amaranthaceae (Magnoliopsida | Caryophyllanae | Caryophyllales)

5

Swamp Saltbush *
Atriplex amnicola

TJM1: Not Listed.

Family: Amaranthaceae (AMARANTH), Chenopodiaceae (GOOSEFOOT).
Generic common name: SALTBUSH, ORACH.

Location: Malibu Lagoon State Beach: trailside near salt marsh, Dec 2010.

Characteristics: non-Native, White, Yellow, Green, Red, Small, Clusters, Simple, Woody, Perennial, Summer, Fall.

Note: has NOXIOUS WEED status.

Thumbnail Picture of Atriplex amnicola

6

Southern Russian Thistle *
Salsola australis

TJM1: Salsola tragus.

Family: Amaranthaceae (AMARANTH), Chenopodiaceae (GOOSEFOOT).
Generic common name: RUSSIAN THISTLE.

Location: Rancho Sierra Vista/Satwiwa: Big Sycamore Canyon Trail, valley grassland, July 2004.

Characteristics: non-Native, Green, Red, Small, Clusters, Simple, Herbaceous, Annual, Late Spring, Summer.

Note: Invasive exotic
This common plant is frequently confused with Salsola tragus the "Tumbleweed" form, which is much less common in the SMM NRA.

Thumbnail Picture of Salsola australis

7

Russian Thistle *
Salsola tragus

Family: Amaranthaceae (AMARANTH), Chenopodiaceae (GOOSEFOOT).
Other common names: Tumbleweed.
Generic common name: RUSSIAN THISTLE.

Location: Malibu Canyon Road: disturbed roadside, Oct 2008.

Characteristics: non-Native, Green, Red, Small, Clusters, Simple, Herbaceous, Annual, Winter, Summer, Fall.

Note: has NOXIOUS WEED status.
This plant is much less common in the SMM NRA than Salsola australis.

Thumbnail Picture of Salsola tragus


Family Apiaceae (Magnoliopsida | Asteranae | Apiales)

8

Poison Hemlock *
Conium maculatum

Family: Apiaceae (CARROT).
Generic common name: POISON HEMLOCK.

Location: Point Mugu State Park: Big Sycamore Canyon Trail, riparian woodland, April 2004.

Characteristics: non-Native, White, Small, Clusters, Simple, Herbaceous, Annual, Perennial, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Conium maculatum

9

Sweet Fennel *
Foeniculum vulgare

Family: Apiaceae (CARROT).
Other common names: biscuit root, fennel.
Generic common name: FENNEL.

Location: Circle X Ranch: Yerba Buena Road shoulder, chaparral, June 2004.

Characteristics: non-Native, Yellow, Small, Clusters, Simple, Herbaceous, Perennial, Late Spring, Summer.

Note: Invasive exotic.

Thumbnail Picture of Foeniculum vulgare


Family Apocynaceae (Magnoliopsida | Asteranae | Gentianales)

10

Periwinkle *
Vinca major

Family: Apocynaceae (DOGBANE).
Other common names: bigleaf periwinkle, greater periwinkle.
Generic common name: PERIWINKLE.

Location: Backbone Trail between Zuma Ridge Trail and Kanan Trailhead: riparian woodland, April 2004.

Characteristics: non-Native, Blue, Large, Solitary, Simple, Herbaceous, Woody, Perennial, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Vinca major


Family Araceae (Magnoliopsida | Lilianae | Alismatales)

11

Water Lettuce *
Pistia stratiotes

Family: Araceae (ARUM).
Generic common name: WATER-LETTUCE.

Location: Open water, June 2011.

Characteristics: non-Native, White, Green, Small, Clusters, Simple, Herbaceous, Perennial, Summer, Fall.

Note: Invasive exotic.

Thumbnail Picture of Pistia stratiotes


Family Arecaceae (Magnoliopsida | Lilianae | Arecales)

12

Mexican Fan Palm *
Washingtonia robusta

Family: Arecaceae (PALM).
Other common names: Washington fan palm, Sonoran fan palm.
Generic common name: FAN PALM.

Location: Wildwood Park: riparian woodland, June 2010.

Characteristics: non-Native, White, Yellow, Medium, Clusters, Simple, Woody, Perennial, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Washingtonia robusta


Family Asparagaceae (Magnoliopsida | Lilianae | Asparagales)

13

Smilax Asparagus *
Asparagus asparagoides

Family: Asparagaceae (ASPARAGUS).
Generic common name: ASPARAGUS.

Location: Malibu Lagoon State Beach: trailside near salt marsh, March 2011.

Characteristics: non-Native, White, Medium, Solitary, Simple, Herbaceous, Perennial, Early Spring.

Note: Invasive exotic.

Thumbnail Picture of Asparagus asparagoides


Family Asphodelaceae (Magnoliopsida | Lilianae | Asparagales)

14

Onionweed *
Asphodelus fistulosus

Family: Asphodelaceae (ASPHODEL, ALOE), Liliaceae (LILY).
Other common names: false asphodel, asphodel.
Generic common name: ASPHODEL.

Location: Malibu Creek State Park: Park Service access road, disturbed grassland, May 2006.

Characteristics: non-Native, White, Medium, Clusters, Simple, Herbaceous, Perennial, Late Spring.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Asphodelus fistulosus


Family Asteraceae(discoid) (Magnoliopsida | Asteranae | Asterales)

15

Thoroughwort *
Ageratina adenophora

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: eupatory, sticky snakeroot, croften weed.
Generic common name: SNAKEROOT.

Location: Topanga State Park: Rustic Canyon Trail, oak woodland, Sept 2009.

Characteristics: non-Native, White, Medium, Clusters, Simple, Woody, Perennial, Winter, Early Spring, Late Spring, Summer, Fall.

Note: Invasive exotic.

Thumbnail Picture of Ageratina adenophora

16

Italian Thistle *
Carduus pycnocephalus ssp. pycnocephalus

TJM1: Carduus pycnocephalus.

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: Italian plumeless thistle.
Generic common name: PLUMELESS THISTLE.

Location: Circle X Ranch: Grotto Trail, oak woodland, April 2004.

Characteristics: non-Native, Red, Medium, Clusters, Simple, Herbaceous, Annual, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Carduus pycnocephalus ssp. pycnocephalus

17

Woolly Distaff Thistle *
Carthamus lanatus

Family: Asteraceae(discoid) (SUNFLOWER).
Generic common name: DISTAFF THISTLE.

Location: UCLA Stunt Ranch, disturbed grassland, June 2011.

Characteristics: non-Native, Yellow, Large, Solitary, Simple, Herbaceous, Annual, Late Spring.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Carthamus lanatus

18

Purple Star-thistle *
Centaurea calcitrapa

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: red star-thistle.
Generic common name: KNAPWEED, STAR-THISTLE.

Location: Upper Las Virgenes Canyon Open Space: disturbed grassland, June 2006.

Characteristics: non-Native, Red, Medium, Solitary, Simple, Herbaceous, Annual, Late Spring.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Centaurea calcitrapa

19

Tocalote *
Centaurea melitensis

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: yellow star thistle, Maltese star-thistle.
Generic common name: KNAPWEED, STAR-THISTLE.

Location: Circle X Ranch: Canyon View Trail, chaparral, May 2004.

Characteristics: non-Native, Yellow, Medium, Solitary, Simple, Herbaceous, Annual, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Centaurea melitensis

20

Yellow Star Thistle *
Centaurea solstitialis

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: Barnaby's thistle.
Generic common name: KNAPWEED, STAR-THISTLE.

Location: Westlake Blvd. disturbed road margin: chaparral, Sept 2004.

Characteristics: non-Native, Yellow, Medium, Solitary, Simple, Herbaceous, Annual, Late Spring, Summer.

Note: Invasive exotic.

Thumbnail Picture of Centaurea solstitialis

21

Cardoon *
Cynara cardunculus ssp. cardunculus

TJM1: Cynara cardunculus.

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: artichoke thistle, artichoke.
Generic common name: CYNARA.

Location: Arroyo Sequit: Arroyo Sequit Loop Trail, valley grassland, June 2004.

Characteristics: non-Native, Red, Large, Solitary, Simple, Herbaceous, Perennial, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Cynara cardunculus ssp. cardunculus

22

German Ivy *
Delairea odorata

TJM1: Senecio mikanioides.

Family: Asteraceae(discoid) (SUNFLOWER).
Generic common name: CAPE IVY, GERMAN IVY.

Location: Topanga State Park: Los Liones Trail, chaparral, Nov 2006.

Characteristics: non-Native, Yellow, Small, Clusters, Simple, Woody, Perennial, Winter, Early Spring.

Note: Invasive exotic.

Thumbnail Picture of Delairea odorata

23

Russian Knapweed *
Rhaponticum repens 

TJM1: Acroptilon repens.
TJM2: Acroptilon repens.
F N A: Acroptilon repens.
A N F: Acroptilon repens.

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: hardheads.

Location: Rancho Sierra Vista/Satwiwa: Near Equestrian parking lot, disturbed grassland, June 2005.

Characteristics: non-Native, Red, Medium, Solitary, Simple, Herbaceous, Perennial, Late Spring, Summer.

Note: Invasive exotic, NOXIOUS WEED.

◊ This name is from the Jepson eFlora. It is more current than the TJM2 name.

Thumbnail Picture of Rhaponticum repens

24

Milk-thistle *
Silybum marianum

Family: Asteraceae(discoid) (SUNFLOWER).
Other common names: blessed milkthistle.
Generic common name: MILK-THISTLE.

Location: Solstice Canyon: TRW Loop Trail, oak woodland, June 2004.

Characteristics: non-Native, Red, Large, Solitary, Simple, Herbaceous, Annual, Late Spring, Summer.

Note: Invasive exotic, has NOXIOUS WEED status in some states.

Thumbnail Picture of Silybum marianum


Family Asteraceae(radiate) (Magnoliopsida | Asteranae | Asterales)

25

Garland Chrysanthemum *
Glebionis coronaria

TJM1: Chrysanthemum coronarium.

Family: Asteraceae(radiate) (SUNFLOWER).
Other common names: crown daisy, garland daisy.
Generic common name: DAISY.

Location: Point Dume Natural Preserve: coastal sage scrub, March 2006.

Characteristics: non-Native, White, Yellow, Large, Solitary, Simple, Herbaceous, Annual, Early Spring, Late Spring, Summer.

Note: Invasive exotic.

Thumbnail Picture of Glebionis coronaria


Family Asteraceae(ray) (Magnoliopsida | Asteranae | Asterales)

26

Rush Skeleton Weed *
Chondrilla juncea

TJM1: Not Listed.

Family: Asteraceae(ray) (SUNFLOWER).
Other common names: hogbite.
Generic common name: CHONDRILLA.

Location: Palo Comado Canyon: Palo Comado Canyon Trail, oak savanna, June 2011.

Characteristics: non-Native, Yellow, Medium, Clusters, Simple, Herbaceous, Perennial, Summer.

Note: Invasive exotic.

Thumbnail Picture of Chondrilla juncea

27

Prickly Goldenfleece *
Urospermum picroides

Family: Asteraceae(ray) (SUNFLOWER).
Other common names: bristly tail seed.
Generic common name: GOLDENFLEECE.

Location: Circle X Ranch: Canyon View Trail, chaparral, June 2006.

Characteristics: non-Native, Yellow, Large, Solitary, Simple, Herbaceous, Annual, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Urospermum picroides


Family Brassicaceae (Magnoliopsida | Rosanae | Brassicales)

28

Asian Mustard *
Brassica tournefortii

Family: Brassicaceae (MUSTARD).
Other common names: Sahara mustard.
Generic common name: MUSTARD, TURNIP.

Location: Point Dume Natural Preserve: disturbed roadside, March 2006.

Characteristics: non-Native, Yellow, Small, Clusters, Odd, Herbaceous, Annual, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Brassica tournefortii

29

Flix-weed *
Descurainia sophia

Family: Brassicaceae (MUSTARD).
Other common names: herb sophia.
Generic common name: TANSY MUSTARD.

Location: Disturbed roadsides and waste areas, May 2010.

Characteristics: non-Native, Yellow, Small, Clusters, Odd, Simple, Herbaceous, Annual, Late Spring, Summer.

Note: Invasive exotic.

Thumbnail Picture of Descurainia sophia

30

Perennial Peppergrass *
Lepidium latifolium

Family: Brassicaceae (MUSTARD).
Other common names: perennial pepperweed, broad leaved pepper grass, broadleaved pepperweed.
Generic common name: PEPPERGRASS, PEPPERWORT, PEPPERWEED, PEPPERCRESS.

Location: Arroyo Sequit: entrance road shoulder, sage scrub, June 2004.

Characteristics: non-Native, White, Small, Clusters, Odd, Simple, Herbaceous, Perennial, Late Spring, Summer.

Note: Invasive exotic.

Thumbnail Picture of Lepidium latifolium


Family Dipsacaceae (Magnoliopsida | Asteranae | Dipsacales)

31

Wild Teasel *
Dipsacus fullonum

Other scientific names: Dipsacus sylvestris.

Family: Dipsacaceae (TEASEL).
Other common names: Fuller's teasel.
Generic common name: TEASEL.

Location: Malibu Creek State Park: Crags Road, disturbed riparian woodland, July 2012.

Characteristics: non-Native, Red, Small, Large, Clusters, Odd, Herbaceous, Annual, Summer.

Note: Invasive exotic with NOXIOUS WEED status in several US states.

Thumbnail Picture of Dipsacus fullonum


Family Euphorbiaceae (Magnoliopsida | Rosanae | Malpighiales)

32

Terracina Spurge *
Euphorbia terracina

TJM1: Not Listed.

Family: Euphorbiaceae (SPURGE).
Other common names: Geraldton carnation weed.
Generic common name: SPURGE.

Location: Solstice Canyon: TWR Loop Trail, chaparral, June 2004.

Characteristics: non-Native, Yellow, Green, Small, Clusters, Simple, Herbaceous, Perennial, Winter, Early Spring, Late Spring, Summer, Fall.

Note: Invasive exotic.

Thumbnail Picture of Euphorbia terracina

33

Castor Bean *
Ricinus communis

Family: Euphorbiaceae (SPURGE).
Generic common name: CASTOR BEAN, RICINUS.

Location: Circle X Ranch: Yerba Buena Road shoulder, chaparral, April 2004.

Characteristics: non-Native, White, Red, Small, Medium, Clusters, Odd, Woody, Perennial, Winter, Early Spring, Late Spring, Summer, Fall.

Note: Invasive exotic.

Thumbnail Picture of Ricinus communis


Family Fabaceae (Magnoliopsida | Rosanae | Fabales)

34

Silver Wattle *
Acacia dealbata

Family: Fabaceae (PEA, LEGUME).
Generic common name: ACACIA, WATTLE.

Location: Backbone Trail near Piuma Road: oak woodland, Feb. 2010.

Characteristics: non-Native, Yellow, Small, Medium, Clusters, Simple, Woody, Perennial, Early Spring.

Note: Invasive exotic.

Thumbnail Picture of Acacia dealbata

35

Golden Wreath Wattle *
Acacia saligna

TJM1: Not Listed.

Family: Fabaceae (PEA, LEGUME).
Other common names: Blue-Leaf Wattle.
Generic common name: ACACIA, WATTLE.

Location: East End of Range: disturbed roadsides, March 2010.

Characteristics: non-Native, Yellow, Small, Medium, Clusters, Simple, Woody, Perennial, Early Spring.

Note: Invasive exotic.

Thumbnail Picture of Acacia saligna

36

Spanish Broom *
Spartium junceum

Family: Fabaceae (PEA, LEGUME).
Other common names: gorse.
Generic common name: BROOM.

Location: Circle X Ranch: Yerba Buena Road shoulder, chaparral, March 2004.

Characteristics: non-Native, Yellow, Large, Clusters, Odd, Woody, Perennial, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Spartium junceum

37

Rose Clover *
Trifolium hirtum

Family: Fabaceae (PEA, LEGUME).
Generic common name: CLOVER.

Location: Circle X Ranch: Yerba Buena Road shoulder, disturbed shoulder margin, April 2010.

Characteristics: non-Native, Red, Small, Clusters, Odd, Herbaceous, Annual, Early Spring.

Note: Invasive exotic.

Thumbnail Picture of Trifolium hirtum


Family Iridaceae (Magnoliopsida | Lilianae | Asparagales)

38

Yellow Water Iris *
Iris pseudacorus

Family: Iridaceae (IRIS).
Other common names: paleyellow iris, horticultural iris, yellow flag.
Generic common name: IRIS.

Location: Cold Creek: creekbed.

Characteristics: non-Native, Yellow, Large, Solitary, Odd, Herbaceous, Perennial, Early Spring.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Iris pseudacorus


Family Lythraceae (Magnoliopsida | Rosanae | Myrtales)

39

Hyssop Loosestrife *
Lythrum hyssopifolia

TJM1: Lythrum hyssopifolium.

Family: Lythraceae (LOOSESTRIFE).
Generic common name: LOOSESTRIFE.

Location: Rancho Sierra Vista/Satwiwa: Wendy Trail, riparian woodland, June 2005.

Characteristics: non-Native, Red, Small, Clusters, Simple, Herbaceous, Perennial, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Lythrum hyssopifolia


Family Myrtaceae (Magnoliopsida | Rosanae | Myrtales)

40

Red Gum *
Eucalyptus camaldulensis

A N F: Eucalyptus camaldulensis var. camaldulensis.

Family: Myrtaceae (MYRTLE, WAX MYRTLE).
Other common names: river red gum.
Generic common name: GUM TREE.

Location: Peter Strauss Ranch: riparian zone near creek, June 2011.

Characteristics: non-Native, White, Medium, Large, Clusters, Simple, Woody, Perennial, Late Spring.

Note: Invasive exotic, widely planted.

Thumbnail Picture of Eucalyptus camaldulensis

41

Blue Gum *
Eucalyptus globulus

Family: Myrtaceae (MYRTLE, WAX MYRTLE).
Other common names: Eucalyptus, Tasmanian bluegum.
Generic common name: GUM TREE.

Location: Circle X Ranch: Campgrounds, oak woodland, Feb 2004.

Characteristics: non-Native, White, Large, Solitary, Simple, Woody, Perennial, Winter, Early Spring.

Note: Invasive exotic, widely planted.

Thumbnail Picture of Eucalyptus globulus


Family Oxalidaceae (Magnoliopsida | Rosanae | Oxalidales)

42

Bermuda Buttercup *
Oxalis pes-caprae

Family: Oxalidaceae (OXALIS).
Generic common name: WOODSORREL, OXALIS.

Location: Arroyo Sequit: entrance road, chaparral, Feb 2005.

Characteristics: non-Native, Yellow, Large, Clusters, Simple, Herbaceous, Perennial, Winter, Early Spring, Fall.

Can become invasive.

Thumbnail Picture of Oxalis pes-caprae


Family Poaceae (Magnoliopsida | Lilianae | Poales)

43

Jointed Goatgrass *
Aegilops cylindrica

Family: Poaceae (GRASS).
Generic common name: GOAT GRASS.

Location: Rancho Sierra Vista/Satwiwa: Wendy Trail, grassland. July 2012.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Aegilops cylindrica

44

Giant Reed *
Arundo donax

Family: Poaceae (GRASS).
Other common names: giant cane.
Generic common name: GIANT REED.

Location: Point Mugu State Park: maintenance area near PCH, July 2009.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Arundo donax

45

Purple Falsebrome *
Brachypodium distachyon

Family: Poaceae (GRASS).
Generic common name: FALSE BROME.

Location: Mulholland Highway, disturbed roadside, May 2010.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Brachypodium distachyon

46

Red Brome *
Bromus rubens 

TJM1: Bromus madritensis ssp. rubens.
TJM2: Bromus madritensis ssp. rubens.
A N F: Bromus madritensis ssp. rubens.

Family: Poaceae (GRASS).
Other common names: compact brome, Madrid brome, foxtail chess, foxtail brome, Spanish brome.
Generic common name: BROME, CHESS.

Location: Cheeseboro/Palo Comado Canyons: burned chaparral, April 2006.

Characteristics: non-Native.

This subspecies of Bromus madritensis now raised to binomial rank in the Jepson eFlora.

Note: Invasive exotic.

◊ This name is from the Jepson eFlora. It is more current than the TJM2 name.

Thumbnail Picture of Bromus rubens

47

Cheat Grass *
Bromus tectorum

Family: Poaceae (GRASS).
Other common names: downy brome.
Generic common name: BROME, CHESS.

Location: Paramount Ranch, valley grassland, March 2009.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Bromus tectorum

48

Uruguayan Pampas Grass *
Cortaderia selloana

Family: Poaceae (GRASS).
Other common names: pampas grass.
Generic common name: PAMPAS GRASS.

Location: PCH road margin: coastal sage scrub, Sept 2009.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Cortaderia selloana

49

Medusahead *
Elymus caput-medusae

TJM1: Taeniatherum caput-medusae.
A N F: Elymus caput-medusae ssp. caput-medusae.

Family: Poaceae (GRASS).
Generic common name: WILD RYE, WHEAT GRASS, SQUIRRELTAIL.

Location: Circle X Ranch: Mishe Mokwa Trail trailhead, disturbed thin soiled grassland, May 2010.

Characteristics: non-Native.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Elymus caput-medusae

50

Tall Fescue *
Festuca arundinacea

F N A: Schedonorus arundinaceus.
Other scientific names: Lolium arundinaceum, Schedonorus phoenix.

Family: Poaceae (GRASS).
Generic common name: FESCUE, RYE GRASS.

Location: Paramount Ranch: low areas near the creek, June 2011.

Characteristics: non-Native.

Note: Invasive exotic
Many cultivated varieties, some used as turf grass, frequently escaped.

Thumbnail Picture of Festuca arundinacea

51

Seashore Paspalum *
Paspalum vaginatum

Family: Poaceae (GRASS).
Generic common name: CROWNGRASS.

Location: Malibu Lagoon State Beach: tidal salt marsh, dec 2010.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Paspalum vaginatum

52

Fountain Grass *
Pennisetum setaceum

Family: Poaceae (GRASS).
Other common names: crimson fountaingrass.
Generic common name: FOUNTAINGRASS.

Location: Point Mugu State Park: PCH disturbed road margin and bluffs, May 2006.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Pennisetum setaceum

53

Harding Grass *
Phalaris aquatica

Family: Poaceae (GRASS).
Other common names: bulbous canarygrass.
Generic common name: CANARYGRASS.

Location: Rancho Sierra Vista/Satwiwa: Wendy Trail, disturbed grassland, June 2006.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Phalaris aquatica

54

Rabbitsfoot Grass *
Polypogon monspeliensis

Family: Poaceae (GRASS).
Other common names: annual beard grass, annual rabbitsfoot grass.
Generic common name: BEARD GRASS, RABBITSFOOT GRASS.

Location: Malibu Creek State Park: riparian woodland, June 2010.

Characteristics: non-Native.

Note: Invasive exotic.

Thumbnail Picture of Polypogon monspeliensis


Family Polygonaceae (Magnoliopsida | Caryophyllanae | Caryophyllales)

55

Devil's Thorn *
Emex spinosa

Family: Polygonaceae (BUCKWHEAT).
Other common names: spiny threecornerjack.
Generic common name: THREECORNERJACK.

Location: Zuma Beach County Park: developed beach facilities, January 2008.

Characteristics: non-Native, Green, Small, Clusters, Simple, Herbaceous, Annual, Summer.

Note: Invasive exotic, NOXIOUS WEED.

Thumbnail Picture of Emex spinosa


Family Ranunculaceae (Magnoliopsida | Ranunculanae | Ranunculales)

56

Creeping Buttercup *
Ranunculus repens

Family: Ranunculaceae (BUTTERCUP).
Other common names: crowfoot.
Generic common name: BUTTERCUP.

Location: Point Mugu State Park: La Jolla Valley Loop Trail, streamside in riparian woodland, May 2012.

Characteristics: non-Native, Yellow, Medium, Large, Solitary, Simple, Herbaceous, Perennial, Late Spring.

Note: Invasive exotic, has NOXIOUS WEED status in some US states.

Thumbnail Picture of Ranunculus repens


Family Rosaceae (Magnoliopsida | Rosanae | Rosales)

57

Himalayan blackberry *
Rubus armeniacus

TJM1: Rubus discolor.

Family: Rosaceae (ROSE).
Other common names: Himalaya-berry.
Generic common name: BLACKBERRY, RASPBERRY.

Location: Rocky Oaks: west end beyond the Rocky Oaks Loop Trail, riparian woodland, June 2010.

Characteristics: non-Native, White, Red, Large, Clusters, Simple, Woody, Perennial, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Rubus armeniacus


Family Simaroubaceae (Magnoliopsida | Rosanae | Sapindales)

58

Tree of Heaven *
Ailanthus altissima

Family: Simaroubaceae (QUASSIA, SIMAROUBA).
Other common names: stink tree.
Generic common name: AILANTHUS.

Location: Encinal Canyon Road: disturbed margin near chaparral, June 2009.

Characteristics: non-Native, White, Small, Clusters, Simple, Woody, Perennial, Late Spring.

Note: Invasive exotic

The flower forms include male, female, and perfect. Further, these can occur in various combinations on individuals.

Thumbnail Picture of Ailanthus altissima


Family Solanaceae (Magnoliopsida | Asteranae | Solanales)

59

Tree Tobacco *
Nicotiana glauca

Family: Solanaceae (NIGHTSHADE, POTATO).
Generic common name: TOBACCO.

Location: Circle X Ranch: group campground access road margin, chaparral, Feb 2004.

Characteristics: non-Native, Yellow, Medium, Large, Clusters, Simple, Woody, Perennial, Early Spring, Late Spring, Summer.

Note: Invasive exotic HIGHLY TOXIC.

Thumbnail Picture of Nicotiana glauca


Family Tamaricaceae (Magnoliopsida | Caryophyllanae | Caryophyllales)

60

Saltcedar *
Tamarix ramosissima

Family: Tamaricaceae (TAMARISK).
Other common names: tamarisk.
Generic common name: TAMARISK.

Location: Marvin Braude Mulholland Gateway Park: Reseda Blvd disturbed margin, April 2008.

Characteristics: non-Native, Red, Small, Clusters, Simple, Woody, Perennial, Early Spring, Late Spring.

Note: Invasive exotic.

Thumbnail Picture of Tamarix ramosissima





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