Friedhilde Krause, Felicitas Marwinski: Handbuch der historischen Buchbestände. Thüringen H-R, Georg-Olms-Verlag S. 173 (Google Buch).
zobodat.at
S. Jost Casper: Pinguicula lippoldii nova spec. and Pinguicula toldensis nova spec. – two endemic Pinguicula species (Lentibulariaceae) from East Cuba new to science. In: Wulfenia 14 (2007), S. 75–96, hier S. 77 (zobodat.at [PDF; 1,3 MB]): „The epithet has been chosen in honour of the late Dr Hans Lippold, who continued together with Dr Johannes Bisse in the German-Cuban cooperation of studying the flora of Cuba in 1966.“