• Adler (1994), S.878
• Binz (1986), S.499
• Flora Gallica (2014), S.70
• Flora Helvetica (2012), Nr.2371
• Flora Iberica (2007), S.9ff
• Flora Italiana (29.4.2022)
• Flora of North America (29.4.2022)
• Flora of China (2010), S.88
• Hess (1976ff), Bd. 1, S.217
• Markgraf (1981), 163ff.
• Oberdorfer (2001), Nr.149, 149a
• info flora (29.4.2022)
• Pignatti (1982), Vol.3, Nr.4488
• Rothmaler (2002), S.138f
• Tela Botanica (29.4.2022)

Von Karelj - Eigenes Werk, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=27546348