Galeopsis tetrahit (Common hemp-nettle)

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Galeopsis tetrahit L.

Common hemp-nettle

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	Asteridae	A large class that encompasses asters
Order	Lamiales	Aromatic herbs and shrubs, including lavender, lilac, olive, jasmine, ash, teak, snapdragon, sesame, psyllium, garden sage, mint, basil, and rosemary
Family	Lamiaceae	Mint family
Genus	Galeopsis	Means “looks like a weasel,” for the vague resemblence of the corolla
Species	tetrahit	“Four-parted,” probably for the plant’s ovary

About plant names...

Common hemp-nettle is native to Europe and Asia, now widespread and often considered invasive in North America.

Identification: Plants are 6-28" (15-70 cm) tall, with branched stems that have hairs that are bent backward (retrorse). Leaves are opposite, with stems about ⅜-1" (1-2.6 cm) long, elliptic to ovate, 1-4" (3-10 cm) × ⅜-1¾" (1-5 cm). They have short stiff hairs and crenate edges. Flowers are tubular and bilaterally symmetrical, appearing from June to September. They are purple with white centers or white with pink/purple centers, or just plain white.

Edibility: Poisonous Skull & Crossbones

Online References:

Missouriplants.com

The University of Wisconsin-Green Bay Cofrin Center for Biodiversity

Biology.burke.washington.edu

Invasive.org, Center for Invasive Species and Ecosystem Health

Luirig.altervista.org

Discover Life

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

Michiganflora.net

8/17/2014 · Bald Mountain, Franconia Notch Area, White Mountains, New Hampshire
≈ 8 × 6" (20 × 14 cm)

8/14/2021 · Maquoit Bay Conservation Area, Brunswick, Maine
≈ 3 × 5" (8.4 × 12 cm)

8/17/2014 · Bald Mountain, Franconia Notch Area, White Mountains, New Hampshire
≈ 7 × 4½" (17 × 12 cm)

8/7/2013 · Amos Kendall Conservation Land, Dunstable, Massachusetts
≈ 8 × 6" (20 × 14 cm)

8/14/2021 · Maquoit Bay Conservation Area, Brunswick, Maine
≈ 5 × 3½" (13 × 9 cm)

Galeopsis tetrahit description by Thomas H. Kent, last updated 11 Oct 2021.

8/17/2014 · Bald Mountain, Franconia Notch Area, White Mountains, New Hampshire
≈ 5 × 6" (13 × 16 cm)

8/7/2013 · Amos Kendall Conservation Land, Dunstable, Massachusetts
≈ 8 × 6" (20 × 14 cm)

8/14/2021 · Maquoit Bay Conservation Area, Brunswick, Maine
≈ 6 × 4" (16 × 10 cm)

8/7/2013 · Amos Kendall Conservation Land, Dunstable, Massachusetts
≈ 6 × 4" (16 × 10 cm)

8/7/2013 · Amos Kendall Conservation Land, Dunstable, Massachusetts
≈ 6 × 9" (16 × 23 cm)

8/14/2021 · Maquoit Bay Conservation Area, Brunswick, Maine
≈ 4 × 2½" (10 × 7 cm)

Range:

About this map...