👉 Opsianus is a genus of flowering plants in the family Rubiaceae, commonly known as the sunflower or poppy. They are native to tropical and subtropical regions around the world, with some species found throughout Europe, Asia, and North America. The genus name "opsia" comes from the Greek word for "sun," referring to their characteristic yellow flowers. Opsianus is characterized by their large, colorful flowers that range from small to large in size, depending on the