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,
Stilbe (plant) Stilbe (plant) The plant genus Stilbe was described in 1767, originally as being in the Verbenaceae, but the genus now is placed in the family Stilbaceae. The entire genus is endemic to the Cape Province region of South Africa. All the species are ericoid shrublets, endemic to fynbos areas. Their leaves are crowded into whorls and may be erect or reflexed. Their margins are revolute. The flowers are bisexual and set in the axils of bracts, with two narrow bracteoles. They are borne in short, dense terminal spikes. The calyx may be tubular or divided. The corolla is funnel-shaped with