Reference
Franz-G. Dunkel (2005): Zur Kenntnis des Ranuculus auricomus-Komplexes in Deutschland: Ranunculus suborbicularis spec. nova The Ranunculus auricomus complex in Germany: Ranunculus suborbicularis spec. nova – Forum Geobotanicum - An Electronic Journal of Geobotanical Research – 2: 8 - 18.