Apocynum androsaemifolium. Along the trail to Lily Lake, Sawtooth National Forest near Stanley, Idaho.
spreading dogbane (Apocynum androsaemifolium), Trinity Alps Wilderness, California
Bitter dogbane next to OHV road to Bald Mountain.
Bitter dogbane north of Woodchuck Creek.
Checkerspots are known to be found dead hanging off this flower. Their proboscis get stuck and they can't retreat.
Apocynum androsaemifolium (Fly-trap dogbane, Spreading dogbane) is a flowering plant. Milky sap appears on broken stems. Leaf margin is entire and leaf veination is alternate. Its leaves appear as pointed ovals, while its flowers appear terminally on a stalk.