Apocynum androsaemifolium L.
Apocynum ambigens Greene
Apocynum androsaemifolium L. var. glabrum Macoun
Apocynum androsaemifolium L. var. griseum (Greene) Bég. & Beloserky
Apocynum androsaemifolium L. var. intermedium Woodson
Apocynum androsaemifolium L. var. incanum A. DC.
Apocynum androsaemifolium L. ssp. pumilum (A. Gray) B. Boivin
Apocynum androsaemifolium L. var. pumilum A. Gray
Apocynum androsaemifolium L. var. tomentellum (Greene) B. Boivin
Apocynum androsaemifolium L. var. woodsonii B. Boivin
Apocynum pumilum (A. Gray) Greene
Apocynum pumilum (A. Gray) Greene var. rhomboideum (Greene) Bég. & Beloserky
Apocynum scopulorum Greene ex Rydb.
Spreading dogbane is related to milkweeds and, like milkweeds, exudes a milky sap when leaves and stems are broken. The foreboding name dogbane comes from its strong toxicity, to people as well as dogs. Dogbane is a North America native plant.
Identification: Plants are shrubby, up to 4' (1.2 m) in height. Stems are branching, smooth or slightly hairy, round, light green, dark red, or purple. Leaves are opposite, roughly oval-shaped, with pointed tips and smooth edges, green on top and pale green below. Flowers are white to pink or with pink interiors, about ¼" (6.3 mm) around, tubular to bell-shaped, with five flared petals. They are fragrant and occur in clusters at the tips of branches. They remind me a little of blueberry flowers.
Edibility: Poisonous Potent, intensely bitter alkaloids apocynamarin or cymarin depress heart rate and act on the vaso-motor system.
Apocynum androsaemifolium on Missouriplants.com
Apocynum androsaemifolium on Montana Plant Life
Apocynum androsaemifolium at Botanical.com
Apocynum androsaemifolium at Illinois Wildflowers
Apocynum androsaemifolium on the University of Massachusetts Landscape, Nursery & Urban Forestry Program
Apocynum androsaemifolium description by Thomas H. Kent, last updated 25 May 2020.