Apocynaceae is a family of dicotyledonous shrubs or plants,
having about 130 genera and 1,100 species worldwide, mostly
tropical, many with poisonous milky juice.
Members of this family are perennial plants with simple, opposite
leaves. The 5-lobed corolla forms a substantial tube, with
5 alternating stamens attached to the tube. The 5-lobed calyx
is often separated almost to the base, and the single-style
pistil is usally free or almost free from the calyx. The leaves
The fruits are long, hanging pods in pairs with many seeds
inside, often with a hair tuft on one end. As the 2-segment
fruit develops, it splits apart to form separate pods that
open after drying. Some species have a milky sap that can
The fibrous stems of A. cannabinum were used by Native Americans
for making ropes and cords.
Guide to Identify Presented Species of the
androsaemifolium - Spreading Dogbane Plant with milky sap, 20-70
cm tall. Dry areas, plains-subalpine.
Flowers pink or white with pink veins, 4-12 mm long, in open
Leaves opposite, spreading to hanging, egg-shaped to oblong,
Alphabetical listing with links to presented species of the Dogbane family: