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,
Christmas flowers the other Christmas flowers, ivy leaves symbolize eternity and resurrection. The ivy leaf has been associated with the ancient Egyptian god, Osiris, and the Greco-Roman god, Attis; both of whom were resurrected from the dead. Mistletoe is a Christmas plant whose origin is said to date back to the Pagans. Druid priests used this Christmas plant two hundred years before the birth of Christ in their winter celebrations. A more modern tradition is to exchange kisses under a sprig of mistletoe. Christmas flowers Christmas flowers are the popular flowers used during the festive season of Christmas. In many nations, seasonal