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.

picture of -, image of Alnus glutinosa

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

        

picture of -, image of Alnus glutinosa

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

        

picture of -, image of Alnus glutinosa

Zelimir Borzan, University of Zagreb, Bugwood.org    bug_1379012

Month Unknown        

picture of -, image of Alnus glutinosa

Robert Vidéki, Doronicum Kft., Bugwood.org    bug_5398732

Month Unknown        

picture of -, image of Alnus glutinosa

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

Month Unknown        

picture of -, 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.

picture of -, 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.

picture of -, 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.

picture of -, 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.

picture of -, image of Alnus glutinosa

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

Month Unknown        

picture of -, 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.