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,
Johnsonia (plant) the south-west of Western Australia in the Avon Wheatbelt, Esperance Plains, Jarrah Forest, Mallee, Swan Coastal Plain and Warren biogeographic zones. Each species has its own habitat requirements. Johnsonia (plant) Johnsonia is a genus of herbs in the family Asphodelaceae, subfamily Hemerocallidoideae. They are grass-like plants with minute flowers surrounded by bracts which are often tinged with white, pink or cream. There are five species, all of which are endemic to the south-west of Western Australia. All the plants in this genus are rhizomatous, tufted, perennial herbs with grass-like leaves which all emerge from the base of the plant. The