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This little weed can be identified by the tiny ray florets of the flowerheads – there are only about 5 of these, far fewer in number than the tiny disk florets in the center of the flowerhead. Aside from 'Peruvian Daisy,' other common names for this species include 'Shaggy Soldiers' and 'Common Quickweed,' and Galinsoga ciliata is a scientific synonym by which this species is occasionally referred. There is another weedy species in this genus that is less common in Illinois – this is Galinsoga parviflora (Lesser Peruvian Daisy), which is also native to Central and South America. These two species are very similar to each other in appearance and they prefer similar disturbed habitats. To distinguish them, the achenes of their ray florets should be examined

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© John Hilty

Source: Illinois Wildflowers

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