common North American weed with linear leaves and small discoid heads of yellowish flowers; widely naturalized throughout temperate regions; sometimes placed in genus Erigeron
slightly succulent perennial with basal leaves and hairy sticky stems each bearing a solitary flower head with narrow pink or lavender rays; coastal bluffs Oregon to southern California
especially pretty plant having a delicate fringe of threadlike rays around flower heads having very slender white or pink rays; United States and Canada
plant having branching leafy stems each branch with an especially showy solitary flower head with many narrow pink, lavender or white rays; northwestern United States mountains