About Senecio lyonii A.Gray ex Lyon
Senecio lyonii A.Gray ex Lyon, commonly called island senecio, is an uncommon flowering plant species in the aster family. This island endemic occurs only on Guadalupe Island off the coast of Baja California, plus two of California's Channel Islands: Catalina Island and San Clemente Island. It grows in coastal sage scrub and chaparral on the islands' hills and canyons. It is a shrub or subshrub that grows from a woody taproot and reaches heights well over one meter. Its leaf blades can grow up to 12 centimeters long, and are deeply divided into many narrow lobes. The plant produces an inflorescence made of many clusters of flower heads. Each flower head has narrow phyllaries that are usually tipped with black, yellow disc florets, and a fringe of yellow ray florets that each measure about one centimeter long.