Alnus serrulata (Smooth alder)

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Alnus serrulata (Aiton) Willd.

Smooth alder, hazel alder

Kingdom	Plantae	Plants, but not fungi, lichens, or algae
Subkingdom	Tracheobionta	Vascular plants—plants with a “circulatory system” for delivering water and nutrients
Division	Magnoliophyta	Flowering plants, also known as angiosperms
Class	Magnoliopsida	Dicotyledons—plants with two initial seed leaves
Subclass	Rosidae	Roses, legumes, proteas, dogwoods, hydrangeas, mistletoes, euphorbias, grapes, many more
Order	Fagales	Birch, she-oak, beech, walnut, bayberry, others
Family	Betulaceae	Birch family: birches, alders, hazels, hornbeams and hop-hornbeams
Genus	Alnus	The classical Latin name for this genus
Species	serrulata	Minutely serrate

About plant names...

Smooth alders are usually small, somewhat disheveled-looking trees, with many trunks and branches that form a nearly impenetrable thicket. As a group, alders' most prominent feature is the small cone-like fruits, which remain on the tree through the winter. They are common at the edge of water, and in areas that are wet in the spring.

4/27/2023 · Mitchell Field, Harpswell, Maine

9/25/2010 · Nashua River Rail Trail, Groton Center, Groton, Massachusetts
≈ 6 × 4" (15 × 10 cm) ID is uncertain

Species	"Cones"	Flowers	Leaves	Trunk
Alnus serrulata	On long thin stalks, ½-⅝" (1.3-1.6 cm) long	Bright yellow in spring, male catkins green-brown, female flowers about ½" (1.3 cm)	2-4" (5-10 cm), rounded edges or small serrations, dark green above, paler and with fine hairs below	Speckled with horizontal lens-shaped spots, up to 20' (6.1 m)
Alnus incana ssp. rugosa	On short stalks	Male flowers 2½-5" (6.3-12 cm) long, hanging downward, female flowers about ½" (1.3 cm) around	Oval-shaped, 2½-5" (6.3-12 cm) long, 2-4" (5-10 cm) wide	Speckled with horizontal lens-shaped spots
Alnus viridis	Bunched up	Male flowers about 2" (5 cm), female flowers point up, about ½" (1.3 cm)	Relatively large serrations	Has diamond-shaped patches

Online References:

Www.carolinanature.com

Missouriplants.com

The Virginia Tech Department of Forest Resources and Environmental Conservation

Plants.ces.ncsu.edu

The Lady Bird Johnson Wildflower Center

Plants for a Future, a resource and information centre for edible and otherwise useful plants

EFloras

References:

Sibley, David Allen, The Sibley Guide to Trees, Alfred A. Knopf, 2009, pp. 159-165

Little, Elbert L., National Audubon Society Field Guide to North American Trees, Eastern Region, Alfred A. Knopf, 1980, p. 363-4

8/6/2017 · Andres Art Institute, Big Bear Mountain, Brookline, New Hampshire
≈ 6 × 4" (16 × 11 cm)

8/6/2017 · Andres Art Institute, Big Bear Mountain, Brookline, New Hampshire
≈ 6 × 4" (15 × 10 cm)

8/6/2017 · Andres Art Institute, Big Bear Mountain, Brookline, New Hampshire
≈ 6 × 4" (14 × 10 cm)

Alnus incana (L.) Moench var. serrulata (Aiton) B. Boivin

Alnus noveboracensis Britton

Alnus serrulata (Aiton) Willd. var. subelliptica Fernald

Alnus serrulata description by Thomas H. Kent, last updated 12 Sep 2020.

4/27/2023 · Mitchell Field, Harpswell, Maine

9/25/2010 · Nashua River Rail Trail, Groton Center, Groton, Massachusetts
≈ 4 × 3½" (10 × 8.6 cm) ID is uncertain

12/23/2009 · Nashua River Rail Trail, Groton Center, Groton, Massachusetts
≈ 15 × 10" (37 × 25 cm)

8/6/2017 · Andres Art Institute, Big Bear Mountain, Brookline, New Hampshire
≈ 6 × 4" (14 × 10 cm)

9/25/2010 · Nashua River Rail Trail, Groton Center, Groton, Massachusetts
≈ 4 × 5" (10 × 13 cm) ID is uncertain

Range:

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