senecio Meaning, Definition & Usage

  1. noun enormous and diverse cosmopolitan genus of trees and shrubs and vines and herbs including many weeds
    genus Senecio.

WordNet

Se*ne"ci*o noun
Etymology
L., groundsel, lit., an old man. So called in allusion to the hoary appearance of the pappus.
Definitions
  1. (Bot.) A very large genus of composite plants including the groundsel and the golden ragwort.

Webster 1913