Centaurea stoebe
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Centaurea stoebe, the spotted knapweed or panicled knapweed, is a species of Centaurea native to eastern Europe, although it has spread to North America, where it is considered an invasive species. It
Centaurea maculosa Bozeman
C. stoebe subsp. micranthos in East Wenatchee, Douglas County, Washington
Centaurea stoebe
Knapweed Nightmare noxious weed detection dog digging at spotted knapweed plant
Pappus (botany)
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In Asteraceae, the pappus is the modified calyx, the part of an individual floret, that surrounds the base of the corolla tube in flower. It functions as a dispersal mechanism for the achenes that con
Centaurea stoebe
…where it is considered an invasive species. It forms a tumbleweed, helping to increase the species' reach, and the seeds are also enabled by a feathery pappus. Centaurea stoebe is a biennial or short-lived perennial plant, and it usually has a stout taproot and pubescent stems when young. It has pale and…
The pappus-clad fruits that make up the familiar "dandelion clock" being dispersed by the wind (family Asteraceae)
Bidens frondosa achenes with barbed pappus