👉 Prosthecidiscus is a type of flowering plant in the family Asteraceae, commonly known as the goldenrod or goldenrod. It belongs to the genus "Prosthecidiscus". This species is native to Europe and Asia, with some populations also growing in North America. Prosthecidiscus has long, narrow leaves that are typically glossy green, and it produces showy flowers with yellow petals that can be up to 15 inches long.