Apocynum androsaemifolium

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Spreading dogbane
Apocynum androsaemifolium var androsaemifolium 5.jpg
Apocynum androsaemifolium var. androsaemifolium alongside the first part of the South Loop trail, Kyle Canyon, Spring Mountains, southern Nevada (elev. about 2400 m)
Scientific classification
A. androsaemifolium
Binomial name
Apocynum androsaemifolium
  • Cynopaema androsaemifolium (L.) Lunell
  • Apocynum ambigens Greene
  • Apocynum macranthum Rydb.
  • Apocynum griseum Greene
  • Apocynum muscipulum Moench
  • Apocynum clandestinum Raf.
  • Apocynum rhomboideum Greene
  • Apocynum scopulorum Greene ex Rydb.
  • Apocynum silvaticum Greene
  • Apocynum tomentellum Greene
  • Apocynum arcuatum Greene
  • Apocynum cinereum A.Heller
  • Apocynum diversifolium Greene
  • Apocynum polycardium Greene
  • Apocynum pulchellum Greene

Apocynum androsaemifolium, the fly-trap dogbane or spreading dogbane, is a flowering plant in the Gentianales order.

The plant is common in North America, and is widespread across most of the United States and Canada, and in Alaska, California, and northeast Mexico.[1][2]


Apocynum androsaemifolium has branching stems, hairs on the underside of the leaves, and no hair on the stems.[3][4][5] Milky sap appears on broken stems.

Leaf margin is entire and leaf venation is alternate. Its leaves appear as pointed ovals, while its flowers appear terminally on a stalk.

The plant is poisonous, due to the cardiac glycosides it contains.

Subspecies and varieties[edit]

Subspecies and varieties include:[1]

  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. incanum A.DC. - widespread in Canada, United States, NE Mexico
  4. Apocynum androsaemifolium var. intermedium Woodson - 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. woodsonii B.Boivin - Alberta, British Columbia, Washington State, Wyoming, Nevada, Idaho


  1. ^ a b c "Apocynum androsaemifolium". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. ^ "Apocynum androsaemifolium". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  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.

External links[edit]