Plant morphology share the same basic structure and development as leaves in other plants, and therefore cactus spines are homologous to leaves as well. This aspect of plant morphology overlaps with the study of plant evolution and paleobotany. Secondly, plant morphology observes both the vegetative (somatic) structures of plants, as well as the reproductive structures. The vegetative structures of vascular plants includes the study of the shoot system, composed of stems and leaves, as well as the root system. The reproductive structures are more varied, and are usually specific to a particular group of plants, such as flowers and seeds, fern sori,
Callirhoe (plant) Callirhoe (plant) Callirhoe is a genus of flowering plants in the mallow family, Malvaceae. Its nine species are commonly known as poppy mallows and all are native to the prairies and grasslands of North America. Of the nine, some are annuals while others are perennial plants. The genus is named for the Oceanid Callirrhoe in Greek mythology. Poppy mallow leaves are alternate and palmately lobed. The flowers are cup-shaped and brightly colored. The purple poppy mallow ("Callirhoe involucrata") is grown as a garden plant. It is a low-growing perennial with a large taproot and hairy stems. The flowers range from