This member of the Polygonaceae family was given this name by Tanja Schuster and James Lauritz Reveal in 2015. It is found in Yanna of China, growing in a rich soil with some water and some to lots of sun. The caudex can grow to twenty centimetres in diameter, the entire plant to ten metres or more in height. The flowers are white. The genera name from Latin ptero; 'winged' and Latin oxzgonum; 'sharp-angled'. The species name means 'finely toothed'.
