👉 Polytrichastrum is a genus of flowering plants in the family Rosaceae, commonly known as roses or roses. These plants have many species that are characterized by their unique and distinctive flowers, often featuring multiple petals, sometimes with a single flower head, and can reach large sizes. Some examples include the rose, which has a wide variety of colors and forms, and the hyacinth, a small, shrub-like plant known for its large, colorful flowers.