Apocynaceae
Asclepiadaceae
Tabernaemontana
Asclepias
A plant genus of the family ASCLEPIADACEAE. This is the true milkweed; APOCYNUM & EUPHORBIA hirta are rarely called milkweed. Asclepias asthmatica has been changed to TYLOPHORA.
Periploca
A plant genus of the family ASCLEPIADACEAE. It is a source of periplocosides (pregnane steroid glycosides).