• APG IV (2016)
• Castroviejo (1986), S.201-203
• Delarze (2008), S.218f
• Flora Gallica (2014). S.374
• Flora Italiana (1.2.2021)
• Hess (1980), Bd. 1, S.715
• info flora (15.1.2021)
• Kerguélen (1999)
• Pignatti (1982), Vol. I, S.135
• Plant List (15.1.2021)
• Rechinger (1981), S. 351
• Tela Botanica (1.2.2021)
• Wanke (2007)

Foto: Wikipedia