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,
Persoonia isophylla Persoonia isophylla Persoonia isophylla is a plant in the family Proteaceae and is endemic to New South Wales. It is an erect or spreading shrub with soft, pine-like leaves and groups of cylindrical yellow flowers. It is similar to "P. pinifolia" but the flowers of that species have small leaves at their base, where the flowers of "P. isophylla" have full-sized leaves at their base. The two species sometimes grow together but hybrids between them are rare. "Persoonia isophylla" is an erect or spreading shrub which grows to a height of and has smooth bark. The leaves are arranged alternately