Description ³

• Shape: Multi-stemmed understory tree
• Leaf/Branch Arrangement: Alternate
• Flower: Brown/red elongated cluster – catkin, males 1 ¾-3 ½ inches long, females ¼ inch long
• Leaves: 1½-4½ inches long, 1-3 inches wide, egg-shaped edges are jagged and coarsely double-toothed
• Bark: grayish to reddish brown with pale horizontal lenticels
• Fruit/Seed: oval to egg-shaped, cone-like clusters up to 2/3 inch long
• Height: 10-25 feet
• Flowering: May - March
• Habitat: bogs, swamps, shores, stream banks, swales, borders of wet meadows

Sources and Credits

1. (c) Franz Xaver, some rights reserved (CC BY-SA), http://commons.wikimedia.org/wiki/File:Alnus_incana_4.jpg
2. (c) Andrey Zharkikh, some rights reserved (CC BY), https://www.flickr.com/photos/zharkikh/6659973879/
3. (c) Minnesota Scientific and Natural Areas, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• Calflora
• CalPhotos
• eFloras.org
• Flora Digital de Portugal
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• Go Botany
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
• NBN Atlas
• New Zealand Plant Conservation Network
• Ontario Trees
• OregonFlora.org
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

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