Cynanchum viminale is a leafless succulent plant with cylindrical, green photosynthetic stems. The plant may grow as a shrub or a scandent vine. The stems produce copious amounts of milky exudate when broken. This exudate is caustic in nature and can cause burns if it contacts human skin. The plant produces small white flowers in clusters.
Toxicity appears to be variable, even locally.
An interesting plant for succulent, cactus and rock/cliff gardens and spilling over dry walls. It also does well in hanging containers.