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]
Alder Trees: Leaves, Bark, Flowers, Cones – Identification (Pictures)
Nov 16, 2022 · Several species of alder trees are native to North America and Europe, with the Red Alder (Alnus rubra) and Black Alder (Alnus glutinosa) being the two most common. Alders grow as tall shade trees or large shrubs that thrive in marshy, damp ground.
12 Species of Alder Trees for Your Yard - The Spruce
Jul 25, 2024 · Learn about 12 species of alder trees and shrubs (Alnus spp.) that belong to the birch family. Find out how to identify them by their leaves, flowers, bark, and habitat, and how to use them for various purposes.
Alnus rubra - Wikipedia
Alnus rubra is the largest species of alder in North America and one of the largest in the world, reaching heights of 20 to 30 metres (66 to 98 ft).
Alnus - Trees and Shrubs Online
The largest species on record is A. glutinosa (to 35 m) whilst the smallest is the A. alnobetula aggregate (subsp. alnobetula grows to 0.5–10 m tall (Tutin et al. 1964)). Almost all alders are light demanding; they are wind pollinated and wind dispersed, and many rapidly colonise suitable open habitats to form potentially pure stands.
Alnus - USDA Plants Database
Tree: Native Status: AK N CAN I,N GL N HI I L48 I,N SPM N: Download Distribution Data . View Print Options . Native: ... The PLANTS Database includes the following 14 species of Alnus Mill. Click below on a thumbnail map or name for species profiles. Native . Introduced . ... ALNUS: 1945. Contributions from the Gray Herbarium. District of ...
Alder | Definition, Description, Tree, Wood, & Facts | Britannica
Alder is a genus of about 30 species of ornamental shrubs and trees in the birch family. Red alder (Alnus rubra) is a tall tree with rusty hairs on its leaves and is widely distributed in North America.
12 Types of Alder Tree: Identify Leaves, Fruit, Seeds of This …
Jan 9, 2024 · Learn about 12 types of Alder trees, a pioneer species that can survive in harsh environments and help ecosystems develop. Find out how to identify their leaves, fruit, seeds, and bark, and what uses they have for humans and wildlife.
Alnus (alder) genus - The Wood Database
Alnus is a genus of about 50 species of hardwood trees in the Betulaceae family. They have light tan to reddish brown heartwood, large aggregate rays, and good workability and stability.
Alder (Alnus glutinosa) - British Trees - Woodland Trust
Learn about alder, a native tree that grows in moist habitats near water and has cones, sticky twigs and leathery leaves. Find out its value to wildlife, uses, mythology and threats.