senecio
noun
se·ne·cio si-ˈnē-sh(ē-ˌ)ō 
plural senecios
: any of a large genus (Senecio) of widely distributed composite plants that have alternate or basal leaves and flower heads usually with yellow ray flowers
Example Sentences
Recent Examples on the Web The nursery grows more than 650 varieties including many different kinds of haworthia, kalanchoe, senecio, aeonium and sedum. 
Debbie Arrington, sacbee, 15 Dec. 2017 Her bouquet was made of white calla lilies, silver senecio, lily of the valley, hydrangeas. Michelle Darrisaw, Southern Living, 13 Oct. 2017
Debbie Arrington, sacbee, 15 Dec. 2017 Her bouquet was made of white calla lilies, silver senecio, lily of the valley, hydrangeas. Michelle Darrisaw, Southern Living, 13 Oct. 2017 Word History
Etymology
New Latin, from Latin, old man, groundsel (from its hoary pappus), from sen-, senic-, senex old man
First Known Use
1562, in the meaning defined above
Medical Definition
senecio
noun
se·ne·cio si-ˈnē-sh(ē-ˌ)ō
1
capitalized : a genus of widely distributed plants (family Compositae) including some containing various alkaloids which are poisonous to livestock
2
plural senecios : any plant of the genus Senecio