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A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
Dendrology (Ancient Greek: δένδρον, dendron, "tree"; and Ancient Greek: -λογία, -logia, science of or study of) or xylology (Ancient Greek: ξύλον, ksulon, "wood") is the science and study of woody plants (trees, shrubs, and lianas), specifically, their taxonomic classifications. [1]
The leaves are distinctly asymmetrical and coarse-textured. It produces small fruits that turn orange-red to dark purple in the autumn , often staying on the trees for several months. The common hackberry is easily confused with the sugarberry ( Celtis laevigata ) and is most easily distinguished by range and habitat.
Maples flower in late winter or early spring, in most species with or just after the appearance of the leaves, but in some before the trees leaf out. [8] Maple flowers are green, yellow, orange or red. Though individually small, the effect of an entire tree in flower can be striking in several species.
The one chosen is a generic maple leaf representing the ten species of maple tree native to Canada – at least one of these species grows natively in every province. [10] The maple leaf is used on the Canadian flag and by the Federal Government as a personification and identifier on its websites, as part of the government's wordmark.
Tree species in the genus Dracaena, despite also being monocots, do have secondary growth caused by meristem in their trunk, but it is different from the thickening meristem found in dicotyledonous trees. [12] Aside from structural definitions, trees are commonly defined by use; for instance, as those plants which yield lumber. [13]
Morus alba, known as white mulberry, common mulberry and silkworm mulberry, [2] is a fast-growing, small to medium-sized mulberry tree which grows to 10–20 m (33–66 ft) tall. It is generally a short-lived tree with a lifespan comparable to that of humans, although there are some specimens known to be more than 250 years old. [ 3 ]
The leaves are harvested three or four times a year by a leaf-picking method under rain-fed or semi-arid conditions, depending on the monsoon. The tree branches pruned during the fall season (after the leaves have fallen) are cut and are used to make durable baskets supporting agriculture and animal husbandry. [citation needed]