Dogbane

The solitary bee, Hylaeus pictus, foraging on Apocynum venetum; many dogbane species are valued as nectar plants
Milkweed - or oleander - aphid, Aphis nerii, feeds on members of the dogbane family. It accumulates the toxic compounds and, if disturbed, releases them in defence.

Dogbane, dog-bane, dog's bane,[citation needed] and other variations, some of them regional and some transient, are names for certain plants that are reputed to kill or repel dogs; "bane" originally meant "slayer", and was later applied to plants to indicate that they were poisonous to particular creatures.[citation needed]