[The Sunflower Family West of the Cascade Mountains of Oregon and Washington]

Members of the Sunflower Family with Discoid Flower Heads Found West of the Cascade Mountains of Oregon and Washington

Waldo Daisy: Erigeron bloomeri var. nudatus

Waldo Daisy: Erigeron bloomeri var. nudatus

Hardheads: Russian Knapweed, Turkestan Thistle: Acroptilon repens (Synonym: Centaurea repens) - ?

Pathfinder, Trailplant: Adenocaulon bicolor -

Western Boneset, Western Snakeroot: Ageratina occidentalis (Synonym: Eupatorium occidentale) -

Beach Burs and Ragweeds: The Genus Ambrosia -

Pearly Everlasting, Western Pearly Everlasting: Anaphalis margaritacea -

False Neststraw, Woolly Fishhooks: Ancistrocarphus filagineus (Synonym: Stylocline filaginea) -

Pussytoes: The Genus Antennaria -

Burdock: The Genus Arctium -

Arnicas and Lepordbanes: The Genus Arnica - Several species of Arnicas have disoid flower heads.

Mugworts, Sageworts and Wormwoods: The Genus Artemisia -

Baccharis and Coyote Brush: The Genus Baccharis -

Beggarticks: The Genus Bidens -

Tasselflowers: The Genus Brickellia -

Silvercrown: The Genus Cacaliopsis -

Thistles: The Genus Carduus -

Distaff Thistles and Safflowers: The Genus Carthamus -

Cornflowers, Knapweeds and Starthistles: The Genus Centaurea -

Dustymaidens and False Yarrow: The Genus Chaenactis -

Thistles: The Genus Cirsium -

Blessed Thistle: Cnicus benedictus (Synonym: Centaurea benedicta) -

Brass Buttons and Cotula: The Genus Cotula -

Tall Marsh Elder, Burweed Marsh Elder, Carelessweed: Cyclachaena xanthifolia (Synonym: Iva xanthifolia) -

German Ivy, Cape Ivy: Delairea odorata (Synonym: Senecio mikanioides) -

Burnweeds and Fireweeds: The Genus Erechtites -

Goldenweeds and Rabbitbrush: The Genus Ericameria -

Waldo Daisy: Erigeron bloomeri var. nudatus -

Cudweeds: The Genus Euchiton (Synonym: Gnaphalium) -

Cottonroses and Cudweeds: The Genus Filago (Synonym: The Genus Logfia) -

Cudweeds:The Genus Gnaphalium (Synonym: The Genus Pseudognaphalium) -

Whitney's Goldenweed: Hazardia whitneyi var. discoidea (Synonym: Haplopappus whitneyi ssp. discoideus) -

Hesperevax: The Genus Hesperevax -

Silverback Luina, Littleleaf Luina, Little-leaf Silverback: Luina hypoleuca -

Pineapple Weed, Disc Mayweed: Matricaria discoidea (Synonyms: Chamomilla suaveolens, Matricaria matricarioides) -

Slender Cottonweed: Micropus californicus var. californicus -

Scotch Cottonthistle, Scots Thistle, Scotch Thistle, Cotton Thistle: Onopordum acanthium -

Butterburs and Coltsfoots: The Genus Petasites -

Woollyheads: The Genus Psilocarphus -

Narrowhead Goldenweed: Pyrrocoma carthamoides var. cusickii (Synonym: Haplopappus carthamoides var. cusickii) - ? Ray flowers very reduced or obscure. The flower head may appear discoid.

Silvery Raillardella, Silky Raillardella: Raillardella argentea -

Rainiera, False Silverback, Tongue-leaved Luina: Rainiera stricta (Synonym: Luina stricta) -

Western Coneflower, Western Chocolate Cone: Rudbeckia occidentalis (Synonyms: Rudbeckia occidentalis var. montana, Rudbeckia occidentalis var. occidentalis) -

American Sawwort, American Saw-wort: Saussurea americana -

Butterweeds, Groundsel and Ragworts: The Genus Senecio -

Milk Thistle, Blessed Milk-thistle: Silybum marianum -

Prickly Soliva, Common Soliva, Field Burrweed, Perennial Sow-thistle, Corn Sow-thistle: Soliva sessilis (Synonym: Soliva pterosperma) -

Wirelettuce: The Genus Stephanomeria -

Feverfew and Tansy: The Genus Tanacetum -

Cockleburs: The Genus Xanthium -


Paul Slichter E-mail