Gorbunov P. 2020. Image of Pyankovia affinis (C.A. Mey. ex Schrenk) Mosyakin & Roalson // Plantarium. Plants and lichens of Russia and neighboring countries: open online galleries and plant identification guide. URL: https://www.plantarium.ru/lang/en/page/image/id/650163.html (accessed on 2 Nov 2026).