Senecios

Part of speech: noun

Definitions

1. A genus of flowering plants in the daisy family characterized by composite flower heads and often possessing toxic properties; plants commonly found in diverse habitats including grasslands and roadsides; used in horticulture and studied for their chemical compounds
2. Refers to a group of herbaceous plants and shrubs known for their clustered yellow or orange flowers; widely distributed and sometimes invasive; notable for containing pyrrolizidine alkaloids that can be harmful to livestock and humans
3. Identifies a taxonomic category of plants belonging to the family Asteraceae known for their distinctive inflorescences with ray and disc florets; typically found globally in temperate regions; important ecologically and occasionally implicated in plant poisoning cases

Etymology: "Senecios" is simply the plural of "senecio," the name of a large genus of daisy-family flowering plants, so the history lies in that genus name. "Senecio" comes from Latin "senex," meaning "old man," and the plants earned the name from their fluffy white seed heads, which look like the grey hair of an elderly person. Botanists adopted the Latin word as the genus name, and the English word was borrowed directly from that scientific Latin.

Synonyms: ragworts, groundsel