What is "roldana"

Roldana also known as groundsel is a genus of large herbs or sub shrubs from the tribe groundsel tribe within the sunflower family.

Most if not all of its members used to be members of a related genus, Senecio. The species which are native to Southwest United States, Mexico and Central America and naturalized elsewhere.

several species now regarded as better suited to other genera: Senecio Trixis