Constitutive polymorphic cyanogenesis in the Australian rainforest tree, Ryparosa kurrangii (Achariaceae)

Gynocardin was the only cyanogenic glycoside detected in the foliage of the Australian endemic rainforest tree, Ryparosa kurrangii (Achariaceae). Foliar cyanogens are a constitutive plant chemical defence trait and cyanogenesis was quantitatively polymorphic in mature leaves at a population level.