• WordNet 3.6
    • n Erigeron cosmopolitan genus of usually perennial herbs with flowers that resemble asters; leaves occasionally (especially formerly) used medicinally
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Century Dictionary and Cyclopedia
    • n erigeron A genus of composite herbs, nearly related to Aster, from which it is distinguished chiefly by the narrower and usually more numerous ray-florets and by the equal and less herbaceous bracts of the involucre. There are over 100 species, 70 of which are found in North America. They are of little importance. The horseweed, E. Canadensis, a native of the United States, and widely naturalized in other countries, yields a volatile oil, which is used in medicine as a stimulant. E. Philadelphicus (the common fleabane of North America), E. strigosus (the daisy-fleabane), and E. annuus (the sweet scabious) are employed as diuretics.
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In literature:

Erigeron uniflorum (west of Havenfiord, on rocky soil).
"Visit to Iceland and the Scandinavian North" by Ida Pfeiffer
Erigeron canadense, successful immigrant from America.
"More Letters of Charles Darwin Volume II" by Charles Darwin
This plant appears to be generically distinct from Erigeron, particularly in its stipitate pappus.
"Expedition into Central Australia" by Charles Sturt
Larkspurs are common, with epilobium, senecio, erigeron, and a few solidagos.
"Travels in Alaska" by John Muir
Erigeron uniflorus L. Saussurea alpina DC.
"The Voyage of the Vega round Asia and Europe, Volume I and Volume II" by A.E. Nordenskieold
Among Composites may be mentioned the tansies, Saussureas, and the fine Erigeron multiradiatus common in the forest above Narkanda.
"The Panjab, North-West Frontier Province, and Kashmir" by Sir James McCrone Douie
The drugs commonly prescribed are: ergot, oil of erigeron, oil of turpentine, quinia, strychnia, iron, mineral acids, and gallic acid.
"Essentials of Diseases of the Skin" by Henry Weightman Stelwagon
Erigeron (like an early Michaelmas daisy).
"Small Gardens" by Violet Purton Biddle
There were also perennial sunflowers with beautiful dark centres, and fine erigerons.
"Across the Prairie in a Motor Caravan" by Frances Halton Eva Hasell
Now more generally known as Erigeron.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7" by Various