Cynanchum viminale subsp. australe (Caustic Shrub, Caustic Vine)

A native shrub that grows to 1.3 metres high and 2.5 metres in diameter. The plant has variable forms from sprawling to erect but can form dense mounds in ideal environments. The stems are green to silvery-grey and produce copious amounts of caustic milky fluid when cut or broken, giving rise to its common name.