galium cornigerum

Apocynum venetum, commonly known as sword-leaf dogbane, is a plant species in the dogbane family, poisonous but used as a source of fiber, medicine, and nectar for production of honey. Apocynum venetum leaves have been used in the traditional medicine for hypertension treatment.

Apocynum venetum is considered to be native to a wide range in northern Asia and SE Europe: Italy, Bulgaria, Romania, Yugoslavia, Turkey, Ukraine, Russia, Siberia, Central Asia, Iran, Iraq, Cyprus, Pakistan, Afghanistan, ...