Alder - Wikipedia
Alders are trees that compose the genus Alnus in the birch family Betulaceae. The genus includes about 35 species [2] of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes. [1]
12 Species of Alder Trees for Your Yard - The Spruce
2024年7月25日 · Alder trees (Alnus spp.) include 30 species of trees in the birch family. Learn their main characteristics, growing tips, and how to identify them.
Alder | Definition, Description, Tree, Wood, & Facts | Britannica
alder, (genus Alnus), genus of about 30 species of ornamental shrubs and trees in the birch family (Betulaceae). Alders are distributed throughout the Northern Hemisphere and in parts of western South America on cool wet sites at elevations up to 2,500 metres (8,200 feet).
Alder Trees: Leaves, Bark, Flowers, Cones – Identification ...
2022年11月16日 · Alder (Alnus) is a genus of flowering deciduous trees in the family Betulaceae. There are about 35 alder species, comprising of large trees and smaller shrub-like trees. Many species of alders grow between 66 and 100 ft. (20 – 30 m) tall.
20 Types of Alder Trees (With Pictures) - AMERICAN GARDENER
2024年10月23日 · Alders are trees that compose the genus Alnus in the birch family Betulaceae. The genus includes about 35 species of monoecious trees and shrubs, a few reaching a large size, distributed throughout the north temperate zone with a few species extending into Central America, as well as the northern and southern Andes.
Alnus - Trees and Shrubs Online
Alnus is an ancient and complex genus originating in the late Cretaceous (Graham 1993; Chen, Manchester & Sun 1999). Something of the order of 40 species (their limits much debated) are distributed across the northern hemisphere, extending into the southern hemisphere in South America, where the genus reaches its southern limit in northern ...
Alnus glutinosa - Wikipedia
Alnus glutinosa, the common alder, black alder, European alder, European black alder, or just alder, is a species of tree in the family Betulaceae, native to most of Europe, southwest Asia and northern Africa.
Alnus rubra english - US Forest Service Research and Development
Alder (Alnus spp.) is represented by 20 to 30 species, with 15 species in North and Tropical America and 15 species in Eurasia. All species look alike microscopically. The word alnus is the classical Latin name of alder. Red alder (Alnusrubra) is …
Alnus glutinosa (Black Alder, Common Alder, European Alder ...
The genus, Alnus, is Latin for alder. The species name, glutinosa, is reflective of the sticky texture of its young leaves and stems. This tree will grow 40-60 feet tall and 20-40 feet wide with strong branches. In its native habitat, it can reach 100 feet tall.
Alnus in Flora of North America - eFloras.org
Alnus is characterized by winter buds with long stalks and two valvate scales, inflorescences borne in racemose clusters, and development of both pistillate and staminate inflorescences during the growing season prior to anthesis, with these fully exposed during winter.