Senecio Linnaeus. Ragwort, Groundsel.
A genus of very uncertain circumscription, if treated broadly with as many as 1500-2000 species, trees, shrubs, herbs, and vines. The trend is to divide Senecio into smaller, more natural genera. Most species in our flora traditionally treated as "Senecio" are not even part of a broadly defined core group, and have been transferred to Packera, Hasteola, and Rugelia.
Ref: Anderson (1994); Barkley (1978); Barkley (1999); Barkley (2000); Barkley (2006a) In Flora of North America Editorial Committee (2006b); Bremer (1994); Cronquist (1980); Pelser et al. (2007); Pippen (1978). Show full citations.
Hover over a shape, letter, icon, or arrow on the map to see what it means. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.
© Keith Bradley | 
© Gary P. Fleming | 
© Richard & Teresa Ware |