Native & Naturalized Plants of the Carolinas & Georgia


59

Tree
Perennial
Monoecious

Non-native: Europe
Documented growing wild in - - -

Look for it in disturbed areas, suburban woodlands, per Weakley's Flora

map
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Invasive?

This plant may be causing problems in natural areas outside its native range, according to authorities such as:

Brooklyn Botanic Garden
Kentucky Exotic Pest Plant Council, 2013

 

LEAVES:
Deciduous
Simple
Alternate

FLOWER:
Spring
Unisexual
Staminate calyx 4-parted, pistillate calyx absent
Petals absent in pistillate flowers
4 stamens in staminate flowers
Inferior ovary
Flowers in catkins (staminate catkins elongate)

FRUIT:
Fall

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Fagales

WEAKLEY'S FLORA (11/30/12):
Alnus glutinosa   FAMILY Betulaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Alnus glutinosa   FAMILY Betulaceae

SYNONYMOUS WITH Alnus alnus

 

COMMON NAME:
Black Alder, European Alder


Click or hover over the thumbnails to see larger pictures.

image of Alnus glutinosa

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_alal7_001_lvd

        

image of Alnus glutinosa

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_algl2_003_lvd

        

image of Alnus glutinosa

Zelimir Borzan, University of Zagreb, Bugwood.org    bug_1379012

Month Unknown        

image of Alnus glutinosa

Robert Vidéki, Doronicum Kft., Bugwood.org    bug_5398732

Month Unknown        

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org     bug_5448631

Month Unknown        

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org     bug_5448637

Month Unknown        

Male catkins appear in fall; female appear in spring before leaves emerge, per Invasive Plants, Guide to Identification, Impacts and Control.

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org     bug_5448656

Month Unknown        

Bark becomes dark gray, scaly, per Woody Plants of the Southeastern US: A Winter Guide.

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org    bug_5448675

Month Unknown        

Leaves of native alders tend to have pointed ends, these are rounded, per Invasive Plants, Guide to Identification, Impacts and Control.

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org     bug_5448689

Month Unknown        

Sticky ("glutinosa") young twigs & leaves distingush it from native alders, per Invasive Plants, Guide to Identification, Impacts and Control.

image of Alnus glutinosa

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org     bug_5448690

Month Unknown        

image of Alnus glutinosa

T. Davis Sydnor, The Ohio State University, Bugwood.org    bug_5495389

Month Unknown        

The straight trunk and narrow crown are unlike any native eastern alder, per Woody Plants of the Southeastern US: A Winter Guide.