senecio

sĕnĕcĭo, ōnis, m. [senex],

an old man , Afran. ap. Prisc. p. 618 P.

Senecio
·noun A very large genus of composite plants including the groundsel and the golden ragwort. ...

Webster's Dictionary of the English Language
Senecio
Sĕnĕcĭo, ōnis, m. [senex], a Roman surname , Tac. Agr. 2; 45; id. A. 13, 12; 15, 50; 15, 56 sq.;...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.