Identification tips First of all the currently under the International Plant Names Index this specie is listed as Cynanchum laeve Pers. So I did the joke with the name Cynanchum laeve.
Identification tips
Tip #1: the name of the genus, Asclepias, celebrates Asklepios, the Greek god of medicine. Syriaca, means "from Syria" about Linnaeus' mistaken belief that this species originated from Syria.