Dioscorea polystachya

A rapidly spreading invasive vine up to 16 ft long. Underground tubers up to 10 lb and 3 ft deep make it hard to eradicate. Above ground bulbils easily spread the plant, and it can completely cover and kill natural vegetation. Mostly seen in disturbed areas, but can establish in high quality forests. Leaf arrangements vary from alternate to whorled to opposite on different portions of the plant. Use resources below to identify and eradicate. Yellowish or white flowers have a cinnamon fragrance. It is still available on the internet, but is prohibited for sale, propagation, transport, introduction or purchase in NY state.