👉 Lamellaria is a genus of flowering plants in the family Rosaceae. It belongs to the family of Umbelliferae, which also includes the species commonly known as sunflowers (Helianthus), which are also part of this group. The genus is named after its spiny leaves, which resemble those of a lamina or leaf. Lamellaria plants have two main types: Lamellarian and Lamellar. Lamellarian plants have leaves that are covered in