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Arizona alder
Scientific Name: Alnus oblongifolia
Family: Betulaceae
Category: Dicot
Growth: Tree
Duration: Perennial
Other Names:
Arizona Alder (Alnus oblongifolia)
The Arizona Alder, scientifically known as Alnus oblongifolia, is a substantial tree belonging to the birch family.
Common Names
- Arizona Alder
- Mexican Alder
- New Mexican Alder
Taxonomy and Nomenclature
- Scientific Name: Alnus oblongifolia Torr.
- Family: Betulaceae (birch family)
Distribution and Habitat
This alder is native to the southwestern United States and northern Sonora, Mexico. Specifically, it can be found in west-central New Mexico and central Arizona within the U.S., extending into south-central Chihuahua in Mexico. It thrives in mountainous regions.
Morphological Characteristics
- Alnus oblongifolia is a large tree, reaching heights of up to 72 feet (22 meters).
- The leaves are deciduous, toothed, and simple, arranged alternately on the stem with prominent veining. They are ovate to oblong in shape with a V-shaped base.
Ecological Role
Alnus oblongifolia is an actinorhizal plant, meaning it forms a symbiotic relationship with nitrogen-fixing bacteria in its root nodules. This is referenced as a Tree Growth and Regeneration Response to Climate and Stream Flow in a Species-Rich Southwestern Riparian Forest.
Interactions with Other Organisms
- Alnus oblongifolia forms root nodules which host Frankia populations, a bacteria critical in nitrogen-fixation.
Further Information
- Discover Life: For information about the biology, natural history, ecology, identification and distribution.
- Dave's Garden: Join a friendly community that shares tips and ideas for gardens, along with seeds and plants.