|1.||See also ragwort any of certain plants of the genus Senecio, esp S. vulgaris, a Eurasian weed with heads of small yellow flowers: family Asteraceae (composites)|
|2.||groundsel tree a shrub, Baccharis halimifolia, of E North America, with white plumelike fruits: family Asteraceae|
|[Old English grundeswelge, changed from gundeswilge, from gund pus + swelgan to swallow; after its use in poultices on abscesses]|
any of about 1,200 species of annual, biennial, and perennial herbs, shrubs, trees, and climbers constituting the genus Senecio of the family Asteraceae, distributed throughout the world. Some species are cultivated as border plants or houseplants, and many species contain alkaloids that are poisonous to grazing animals
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