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Apocynum cannabinum L.

Dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton

Dogbane is a perennial shrub that is native to and common in North America. Dogbane bark is a superb source of fiber for making clothes, twine, nets, bags, etc. The plants are harvested in the fall, after the toxins drain to the roots.

Plants: 6½–20′ (2–6 m) high, with reddish stems that excude a milky latex if cut. This sap can cause blisters. Stems are woody at the base, branching a lot further up.

Leaves: Opposite, simple, entire, broadly lanceolate, 2½–6 ⨉ 1–1¾″ (7–15 ⨉ 3–5 cm). Leaves are smooth on top and have fine white hairs below.

Flowers: White to greenish-white flowers have large sepals and a five-lobed corolla. Each flower is ¼″ (6.3 mm) in size. They appear at leaf tips or leaf axils. They appear from May to August.

Fruits: Flowers are replaced by pairs of narrow pointed pods about 4–5 ⨉ ⅛″ (10–12 cm ⨉ 3.2 mm). Each pod contains a large number of seeds, and has tufts of silky white hairs at its tips.

Habitats: Woods, ditches, and hillsides, in gravelly or sandy soil.

Edibility: Poisonous Skull & Crossbones This is poisonous to dogs and livestock as well as to people, and can cause heart attack. Stems contain a milky sap that causes skin to blister. The “cannabinum” in the scientific name refers to a similarity to Cannabis, because of the fibrous properties of both plants. Dogbane is not psychoactive. Despite the plant’s toxicity, seeds can be ground to produce a meal.

Medical: Native Americans used this plant for a variety of medical treatments, though its high degree of toxicity requires a great deal of expertise.

Online References:

Wikipedia

Www.primitiveways.com

The Lady Bird Johnson Wildflower Center

Go Botany

Wildflowers, Ferns & Trees of Colorado, New Mexico, Arizona, and Utah (Apocynum sp.) (Excellent comparison of several Apocynum species.)

Apocynum cannabinum L. var. angustifolium (Wooton) N.H. Holmgren
Apocynum cannabinum L. var. glaberrimum A. DC.
Apocynum cannabinum L. var. greeneanum (Bég. & Beloserky) Woodson
Apocynum cannabinum L. var. hypericifolium (Aiton) A. Gray
Apocynum cannabinum L. var. nemorale (G.S. Mill.) Fernald
Apocynum cannabinum L. var. pubescens (Mitchell ex R. Br.) Woodson
Apocynum cannabinum L. var. suksdorfii (Greene) Bég. & Beloserky
Apocynum hypericifolium Aiton
Apocynum pubescens Mitchell ex R. Br.
Apocynum sibiricum Jacq.
Apocynum sibiricum Jacq. var. cordigerum (Greene) Fernald
Apocynum sibiricum Jacq. var. farwellii (Greene) Fernald
Apocynum sibiricum Jacq. var. salignum (Greene) Fernald
Apocynum suksdorfii Greene
Apocynum suksdorfii Greene var. angustifolium (Wooton) Woodson

 

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Penn­syl­vania · ≈ 1 × 1′ (39 × 34 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/11/2026 · Spear Farm Estuary Preserve, Yarmouth, Maine · ≈ 7 × 4½″ (18 × 12 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/18/2017 · Tobyhanna State Park, Penn­syl­vania

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Penn­syl­vania · ≈ 1½ × 1′ (52 × 34 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/18/2017 · Tobyhanna State Park, Penn­syl­vania · ≈ 4 × 6″ (10 × 15 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Penn­syl­vania · ≈ 1½ × 1′ (46 × 34 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

8/3/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts · ≈ 8 × 5″ (19 × 13 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/27/2016 · Michaux State Forest, Caledonia State Park, Fayetteville, Penn­syl­vania · ≈ 1½ × 1′ (52 × 34 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/18/2017 · Tobyhanna State Park, Penn­syl­vania · ≈ 5 × 4″ (13 × 10 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

6/10/2026 · Swift River, Lincoln, New Hamp­shire · ≈ 16 × 11″ (40 × 27 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/3/2023 · Gettysburg National Military Park, Gettysburg, Penn­syl­vania

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

7/11/2026 · Spear Farm Estuary Preserve, Yarmouth, Maine · ≈ 5 × 3½″ (12 × 8.8 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

8/3/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts · ≈ 4½ × 3″ (11 × 7.9 cm)

Apocynum cannabinum (dogbane, amy root, hemp dogbane, prairie dogbane, Indian hemp, rheumatism root, wild cotton, Indianhemp)

8/3/2012 · Bemis Rd Conservation Area, Pepperell, Mass­a­chu­setts · ≈ 5 × 3½″ (13 × 9.2 cm)

KingdomPlantaePlants, but not fungi, lichens, or algae (from Stearn's Botanical Latin)
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderGentianalesGentians, coffee, gardenias, frangipani, many others
FamilyApocynaceaeDogbane family
GenusApocynumFrom Greek apo, “away from;” and kyon or kunos, “dog”: noxious to dogs, for its ancient use as a dog poison
SpeciescannabinumHemp-like

About plant names...

Range:

About this map...

Apocynum cannabinum description by Thomas H. Kent, not updated.

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