Apocynum androsaemifolium

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Spreading dogbane
Apocynum androsaemifolium var androsaemifolium 5.jpg
A. androsaemifolium var. androsaemifolium in the Spring Mountains, southern Nevada, about 2,400 m (7,900 ft) above sea level
Status TNC G5.svg
Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Apocynum
Species:
A. androsaemifolium
Binomial name
Apocynum androsaemifolium
L.
Synonyms [2]
  • Cynopaema androsaemifolium(L.) Lunell
  • Apocynum ambigensGreene
  • Apocynum macranthumRydb.
  • Apocynum griseumGreene
  • Apocynum muscipulumMoench
  • Apocynum clandestinumRaf.
  • Apocynum rhomboideumGreene
  • Apocynum scopulorumGreene ex Rydb.
  • Apocynum silvaticumGreene
  • Apocynum tomentellumGreene
  • Apocynum arcuatumGreene
  • Apocynum cinereumA.Heller
  • Apocynum diversifoliumGreene
  • Apocynum polycardiumGreene
  • Apocynum pulchellumGreene

Apocynum androsaemifolium, the fly-trap dogbane or spreading dogbane, is a flowering plant in the Gentianales order. It is common across Canada and much of the United States excepting the deep southeast.

Contents

Description

Apocynum androsaemifolium is a perennial herb with branching stems, hairs on the underside of the leaves, and no hair on the stems. [3] [4] [5] It grows to 20–30 centimetres (8–12 inches), exceptionally 50 cm (20 in). Milky sap [6] appears on broken stems.

Its leaves appear as pointed ovals, with entire leaf margins and alternate venation. Pairs of pink flowers bloom at the end of stalks between June and September. [6] Two seed pods 12.5–17.5 cm (5–7 in) in length contain silky-haired seeds. [6]

Taxonomy

Subspecies and varieties

Subspecies and varieties include: [2]

  1. Apocynum androsaemifolium subsp. androsaemifolium – E Canada, W United States
  2. Apocynum androsaemifolium var. griseum(Greene) Bég. & Belosersky – Ontario, British Columbia, Washington State, Oregon, Idaho, Indiana, Michigan
  3. Apocynum androsaemifolium var. incanumA.DC. – widespread in Canada, United States, NE Mexico
  4. Apocynum androsaemifolium var. intermediumWoodson – Colorado
  5. Apocynum androsaemifolium subsp. pumilum(A.Gray) B.Boivin – British Columbia, Washington State, Oregon, Idaho, California, Utah, Montana, Wyoming, Nevada
  6. Apocynum androsaemifolium var. tomentellum(Greene) B.Boivin – British Columbia, Washington State, Oregon, Idaho, California, Nevada
  7. Apocynum androsaemifolium var. woodsoniiB.Boivin – Alberta, British Columbia, Washington State, Wyoming, Nevada, Idaho

Etymology

Apocynum androsaemifolium Linnaeus. From the Greek 'apo': far from and 'kyôn': dog, because of its toxic effects on dogs; Androsema-leaved androsaemifolium ( Hypericum androsaemum ).

Distribution and habitat

The plant is widespread across most of Canada, the United States (including Alaska but excluding Florida), and northeast Mexico. [6] [2] [7] Its native habitats include forests, woodlands, forest edges, prairies, meadows, and fields. [8] It prefers dry soils at low to medium elevations. [6]

Ecology

Animals naturally avoid the plant. [6]

Toxicity

The plant is poisonous [9] due to the cardiac glycosides and resins it contains. [10] Escalating doses usually cause vomiting and diarrhea. Other symptoms include dizziness, colour hallucinations, cold sweats, and excessive urination. In extreme cases, the heart rate may slow before fatal convulsions. Young milkweed shoots must be distinguished from those of the androsemus leaf beetle because they appear at the same time.[ citation needed ]

Uses

Native Americans used spreading dogbane in numerous ways. The plant was used as a medicine to treat ailments including headaches, convulsions, ear ache, heart palpitations, colds, insanity, dizziness, rheumatism, scrofula, and syphilis. The plant can also be used as a contraceptive. [11] Among the Ojibwe, the root was used as a gynecological, oral, and throat aid, as well as an analgesic for headaches and a diuretic during pregnancy. The Ojibwe also consumed the root of the plant during the medicine lodge ceremony. [12] The Forest Potawatomi made medicinal use of the roots as well, and the Prairie Potawatomi used the plant's fruits to treat heart and kidney problems. [11] The stem fibers of the plant are very strong, [12] and Native Americans used them as a thread for sewing. [13] Outside of the Americas, spreading dogbane was also used to treat heart disease in Europe during the first half of the 20th century. [14]

Related Research Articles

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References

  1. NatureServe (1 September 2023). "Apocynum androsaemifolium". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 21 September 2023.
  2. 1 2 3 "Apocynum androsaemifolium". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  3. Alan Hall, The Wild Food Guide, Holt, Rinehard, and Winston, 1976, pp. 171, 217
  4. Blanchan, Neltje (2002). Wild Flowers: An Aid to Knowledge of our Wild Flowers and their Insect Visitors. Project Gutenberg Literary Archive Foundation.
  5. Blanchan, Neltje (2005). Wild Flowers Worth Knowing. Project Gutenberg Literary Archive Foundation.
  6. 1 2 3 4 5 6 Spellenberg, Richard (2001) [1979]. National Audubon Society Field Guide to North American Wildflowers: Western Region (rev ed.). Knopf. pp. 343–344. ISBN   978-0-375-40233-3.
  7. "Apocynum androsaemifolium". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  8. "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org. Retrieved 2021-11-23.
  9. Whitney, Stephen (1985). Western Forests (The Audubon Society Nature Guides). New York: Knopf. pp.  589–90. ISBN   0-394-73127-1.
  10. Elias, Thomas S.; Dykeman, Peter A. (2009) [1982]. Edible Wild Plants: A North American Field Guide to Over 200 Natural Foods. New York: Sterling. p. 267. ISBN   978-1-4027-6715-9. OCLC   244766414.
  11. 1 2 "Apocynum androsaemifolium - Spreading Dogbane". flora.neocities.org. Retrieved 28 March 2021.
  12. 1 2 "BRIT - Native American Ethnobotany Database". Native American Ethnobotany DB. Retrieved 28 March 2021.
  13. Fagan, Damian (2019). Wildflowers of Oregon: A Field Guide to Over 400 Wildflowers, Trees, and Shrubs of the Coast, Cascades, and High Desert. Guilford, CT: FalconGuides. p. 21. ISBN   978-1-4930-3633-2. OCLC   1073035766.
  14. Xie, Wenyan; Zhang, Xiaoying; Wang, Tian; Hu, Jianjun (7 May 2012). "Botany, traditional uses, phytochemistry and pharmacology of Apocynum venetum L. (Luobuma): A review". Journal of Ethnopharmacology. 141 (1): 1–8. doi:10.1016/j.jep.2012.02.003. PMID   22421379 . Retrieved 28 March 2021.