Alnus rhombifolia
White alder · also California alder, Mountain alder, Rhombie leaf alder
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Alnus rhombifolia, also known as white alder, is a deciduous tree native to western North America, thriving in riparian zones. It features flat, egg-shaped leaves with small teeth. This species is suitable for urban planting in areas with ample water and provides habitat for birds.
Where it grows
Trees in each city's inventory, with the share of that city's named trees this species accounts for.
- 8230.18%36 yr18 in
- 370.03%—12 in
Traits
- Foliage
- Deciduous
- Mature height
- 50–80 ft
- Canopy spread
- 40–50 ft
- Growth rate
- Fast
- Drought tolerance
- Low
- Wildlife value
- Moderate
- Blooms
- Mar, Apr, May
Trunk diameters across every city: median 18 in, mean 16 in, 90th percentile 22 in. Measured at breast height, as published by each inventory.
Native range
Terrestrial ecoregions where this species is native. Trees in the dataset mostly stand well outside it.
Temperate Conifer Forests
- British Columbia coastal conifer forests
- Central British Columbia Mountain forests
- Central Pacific Northwest coastal forests
- North Cascades conifer forests
- Northern Rockies conifer forests
- Sierra Nevada forests
Mediterranean Forests, Woodlands & Scrub
- California interior chaparral and woodlands
- California montane chaparral and woodlands
Deserts & Xeric Shrublands
- Baja California desert
Other Alnus in the catalogue
18 of the top 2,000 species are in this genus.
