KUBITZKI, K. (ed.); BAYER, C. (ed.). The families and genera of vascular plants. Vol. 6. Berlin: Springer, 2004. Dostupné online. ISBN3-540-06512-1. (anglicky)
FRIIS, Else Marie; CRANE, Peter R.; PEDERSEN, K.R. Early flowers and angiosperm evolution. [s.l.]: Cambridge University Press, 2011. Dostupné online. ISBN978-0-521-59283-3. (anglicky)
efloras.org
ALMEDA, Frank; FRITSCH, Peter W. Flora of North America: Symplocaceae [online]. Dostupné online. (anglicky)
KVAČEK, Zlatko; TEODORIDIS, Valisis. Tertiary macrofloras of the Bohemian Massif: a review with correlations within Boreal and Central Europe. Bulletin of Geosciences. 2007, čís. 82(4). Dostupné online.
kew.org
powo.science.kew.org
Plants of the world online [online]. Royal Botanic Gardens, Kew. Dostupné online. (anglicky)