Asteraceae (Sunflower family)

of Orange County, California and nearby places. Characteristics
Compiled by Peter J. Bryant, School of Biological Sciences, University of California, Irvine, Irvine, CA 92697.
To comment, mailto:pjbryant@uci.edu. Glossary. Other sources
*, exotic species; Red background: invasive species on the RED ALERT Emergent Invasives list (California Native Plant Society, Orange County Chapter); +, listed species


Common Yarrow,
Achillea millefolium

Blow wives,
Achyrachaena mollis

Sacapellote (Perezia),
Acourtia microcephala

* Russian Knapweed,
Acroptilon repens

Sticky Snakeroot,
Ageratina adenophora

Bigflower Agoseris,
Agoseris grandiflora

Mountain Dandelion,
Agoseris heterophylla

Mountain Dandelion,
Agoseris retrorsa

Coast Weed,
Amblyopappus pusillus

Flatspine Burr Ragweed,
Ambrosia acanthicarpa

Beach-bur,
Ambrosia chamissonis

Weakleaf Bur Ragweed,
Ambrosia confertiflora

Western ragweed,
Ambrosia psilostachya

Woolly Fishhooks,
Ancistrocarphus filagineus

* Mayweed,
Anthemis cotula

Rayless Arnica,
Arnica discoidea
Biennial wormwood,
Artemisia biennis

California sagebrush,
Artemisia californica

Mugwort,
Artemisia douglasiana

Tarragon,
Artemisia dracunculus

Great Basin Sagebrush,
Artemisia tridentata

Coyote Brush,
Baccharis pilularis

Mulefat,
Baccharis salicifolia

Willow Baccharis,
Baccharis salicina

Broom Baccharis,
Baccharis sarothroides

San Diego County Sunflower, Bahiopsis laciniata

Sweetbush,
Bebbia juncea

Common Daisy,
Bellis perennis

Bur-marigold,
Bidens laevis

Cobbler's Pegs,
Bidens pilosa

California Brickelbush,
Brickellia californica

Nevin's brickellbush,
Brickellia nevinii

* Italian Thistle,
Carduus pycnocephalus

Blessed thistle,
Centaurea benedicta

* North African Knapweed, Centaurea diluta

* Tocalote,
Centaurea melitensis

* Yellow Star-thistle,
Centaurea solstitialis

+ Southern tarplant,
Centromadia parryi ssp. australis

Common Tarweed,
Centromadia pungens ssp. laevis

White Pincushion,
Chaenactis artemisiifolia

Yellow Pincushion,
Chaenactis glabriuscula

* Boneseed,
Chrysanthemoides monilifera

* Garland Chrysanthemum, Chrysanthemum coronarium

California Thistle, Cirsium occidentale var. californicum

Cobweb Thistle, Circium occidentale var. occidentale

* Bull thistle,
Cirsium vulgare

Tall horseweed,
Conyza canadensis

Coulter's Horseweed,
Conyza coulteri

* Tropical Horseweed,
Conyza floribunda

Giant Coreopsis,
Coreopsis gigantea

Beach Coreopsis,
Coreopsis maritima

California aster,
Corethrogyne filaginifolia

* Southern Waterbuttons,
Cotula australis

* Brass-buttons,
Cotula coronopifolia

* Artichoke Thistle,
Cynara cardunculus

Slender tarplant,
Deinandra fasciculata

Kellogg's Tarplant,
Deinandra kelloggii

+ San Diego tarplant,
Deinandra paniculata

* Cape Ivy,
Delairea odorata

Stinkwort,
Dittrichia graveolens

False Daisy,
Eclipta prostrata

Bush sunflower,
Encelia californica

Brittlebush,
Encelia farinosa

Putative hybrid,
Encelia californica x farinosa

Rubber Rabbitbrush,
Ericameria nauseosa

Palmer's Goldenbush,
Ericameria palmeri

Parish's Goldenbush,
Ericameria parishii

Pine Goldenbush,
Ericameria pinifolia

* Small Horseweed,
Erigeron bonariensis

Leafy Daisy,
Erigeron foliosus

Golden yarrow,
Eriophyllum confertiflorum

Western goldenrod,
Euthamia occidentalis

Western Marsh Cudweed,
Gnaphalium palustre

Gumplant,
Grindelia camporum

California Matchweed,
Gutierrezia californica

Snakeweed,
Gutierrezia sarothrae

Saw-toothed Goldenbush, Hazardia squarrosa var. grindelioides

Rosilla,
Helenium puberulum

Common Sunflower,
Helianthus annuus

Slender Sunflower,
Helianthus gracilentus

Clustered Tarweed,
Hemizonia fasciculata

Telegraph weed,
Heterotheca grandiflora

Bristly Goldenaster, Heterotheca sessiliflora ssp. echioides

Graceful Tarplant,
Holocarpha virgata ssp. elongata

Red-rayed Hulsea,
Hulsea heterochroma

* Smooth Cat's Ear,
Hypochaeris glabra
* False Dandelion,
Hypochaeris radicata

Menzies' Goldenbush,
Isocoma menziesii

Poverty Weed,
Iva axillaris

San Diego Poverty weed,
Iva hayesiana

Marsh jaumea (Salty Susan),
Jaumea carnosa

* Prickly lettuce,
Lactuca serriola

Coulter's Horseweed,
Laennecia coulteri

Royal Goldfields,
Lasthenia coronaria

Coulter's Goldfields,
Lasthenia glabrata ssp. coulteri

Needle Goldfields,
Lasthenia gracilis

White Tidy Tips,
Layia glandulosa

Yellow Tidy Tips,
Layia platyglossa

Scale-broom,
Lepidospartum squamatum

Leptosyne californica

Valley Lessingia,
Lessingia glandulifera

California Cottonrose,
Logfia filaginoides
* Narrowleaf Cottonrose,
Logfia gallica

Elegant Madia,
Madia elegans

Small Tarweed,
Madia exigua

Grassy Tarweed,
Madia gracilis

Coast Tarweed,
Madia sativa

Cleveland's Dandelion,
Malacothrix clevelandii

Cliff Desert Dandelion (Cliff Aster),
Malacothrix saxatilis

Disc Mayweed,
Matricaria discoidea

* Pineapple weed,
Matricaria matricarioides

Cotton Top,
Micropus californicus

Douglas' silverpuffs, Microseris douglasii ssp. platycarpha

Grassland silverpuffs,
Microseris heterocarpa

Silver Puffs,
Microseris (Uropappus) lindleyi

* Stinknet,
Oncosiphon piluliferum

False Rosinweed,
Osmadenia tenella

* Trailing African Daisy, Osteospermum fruticosa

* African daisy,
Osteospermum ecklonis

* Santa Maria Feverfew,
Parthenium hysterophorus

Allen's Daisy,
Pentachaeta aurea ssp. allenii

* Bristly Ox-tongue,
Picris echioides

Cobweb Bush,
Plecostachys serpyllifolia

Salt Marsh Fleabane,
Pluchea odorata

Arrow Weed,
Pluchea sericea

Slender Poreleaf,
Porophyllum gracile

Fragrant Everlasting, Pseudognaphalium beneolens

Two-tone Everlasting, Pseudognaphalium biolettii

California everlasting, Pseudognaphalium californicum

Wright's Cudweed, Pseudognaphalium canescens

White Cudweed,
Pseudognaphalium leucocephalum

* Weedy Cudweed, Pseudognaphalium luteoalbum

Felt-leaf or White Everlasting, Pseudognaphalium microcephalum

Pink cudweed, Pseudognaphalium (=Gnaphalium) ramosissimum

Cotton-batting Plant, Pseudognaphalium stramineum

Short Woollyheads,
Psilocarphus brevissimus

Slender Woolly-heads,
Psilocarphus tenellus

* Spanish sunflower,
Pulicaria paludosa

California Chicory,
Rafinesquia californica

California ragwort,
Senecio californicus

Threadleaf Groundsel,
Senecio flaccidus

* Australian Fireweed,
Senecio linearifolius

* Common Groundsel,
Senecio vulgaris

* Milk thistle,
Silybum marianum

California Goldenrod,
Solidago velutina ssp. californica

* Prickly sow-thistle,
Sonchus asper

* Common sow-thistle,
Sonchus oleraceus

Brown (derived) Microseris, Stebbinsoseris heterocarpa

Chicoryleaf Wirelettuce, Stephanomeria cichoriacea

Twiggy wreathplant,
Stephanomeria diegensis

Deane's wirelettuce,
Stephanomeria exigua deanei

Rod Wirelettuce,
Stephanomeria virgata

Everlasting Nest-straw,
Stylocline gnaphaloides

+ San Bernardino aster, Symphyotrichum defoliatum

Slender Aster,
Symphyotrichum subulatum

* Common Dandelion,
Taraxacum officinale

Hairy Horsebrush,
Tetradymia comosa

* Yellow Salsify,
Tragopogon dubius

* Purple Salsify,
Tragopogon porrifolius

Canyon Sunflower,
Venegasia carpesioides

+ Big-leaved Crown-beard,
Verbesina dissita

* Golden Crownbeard,
Verbesina encelioides

Mediterranean desert knapweed, Volutaria tubuliflora

Southern Mule Ears,
Wyethia ovata

Spiny Cocklebur,
Xanthium spinosum

Rough Cocklebur,
Xanthium strumarium
       
Back to Plants of Orange County, California