• Adler (1994), S.911
• Binz (1986), S.509
• CCDB - Link (29.11.2022)
• Flora Gallica (2014), S.156
• Flora Helvetica (2012), Nr.2429
• Flora Italiana - Link (29.11.2022)
• Hess (1976ff), Bd. 1, S.572
• info flora - Link (29.11.2022)
• Oberdorfer (2001), Nr.196
• Pignatti (1982), Vol.3, Nr.4580
• Rothmaler (2002), S.151
• Tela Botanica - Link (29.11.2022)
• World Flora Online - Link (29.11.2022)

Foto: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=727615