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In graph theory, a tree is an undirected graph in which any two vertices are connected by exactly one path, or equivalently a connected acyclic undirected graph. [1] A forest is an undirected graph in which any two vertices are connected by at most one path, or equivalently an acyclic undirected graph, or equivalently a disjoint union of trees.
A large tamarind tree near the river Musi in Hyderabad. In 1908 150 people hung on to this tree for two full days amidst a severe flood. The tree stood strong and continues to do so after 110 years. The tree is currently over 300 years old. [3] Wonder Balete Balete tree: OISCA Farm in Canlaon, Philippines 1,300
empress tree; princess tree; foxglove tree; paulownia Bignoniaceae (trumpet creeper family) 712 Radermachera: radermachera trees ; Radermachera sinica: China doll tree; serpent tree Bignoniaceae (trumpet creeper family) Spathodea: spathodea trees ; Spathodea campanulata: African tulip tree Bignoniaceae (trumpet creeper family) Tabebuia: trumpet ...
In botany, the trunk (or bole) is the stem and main wooden axis of a tree, [1] which is an important feature in tree identification, and which often differs markedly from the bottom of the trunk to the top, depending on the species. The trunk is the most important part of the tree for timber production.
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 rhytidome is the most familiar part of bark, being the outer layer that covers the trunks of trees. It is composed mostly of dead cells and is produced by the formation of multiple layers of suberized periderm, cortical and phloem tissue. [33] The rhytidome is especially well developed in older stems and roots of trees.
It is composed of water-conducting cells and associated cells which are often living, and is usually pale in colour. It transports water and minerals from the roots to the upper parts of the tree. The oldest, inner part of the sapwood is progressively converted into heartwood as new sapwood is formed at the cambium. The conductive cells of the ...
Photinia (/ f oʊ ˈ t ɪ n i ə, f ə-/ [3] [4] [5]) is a genus of about 30 species of small trees and large shrubs, but the taxonomy has recently varied greatly, [when?] with the genera Heteromeles, Stranvaesia and Aronia sometimes included in Photinia. They are a part of the rose family (Rosaceae) and related to the apple.