@misc{Ascherson_Paul_(1834–1913)_Synopsis_1913,
 author={Ascherson, Paul (1834–1913) and Graebner, Paul (1871–1933)},
 copyright={Public Domain},
 address={Leipzig},
 howpublished={online},
 year={1913},
 publisher={Verlag von Wilhelm Engelmann},
 language={ger},
 title={Synopsis der Mitteleuropäischen Flora. Bd. 4, Dicotyledones (Verticillatae, Piperales, Salicales, Myricales, Juglandales, Fagales, Urticales, Proteales, Santalales, Aristolochiales, Polygonales)},
 type={Text},
 URL={http://www.rcin.org.pl/Content/130747/PDF/WA488_160505_20907_Ascherson-Synopsis.pdf},
 keywords={Plants - Central Europe, Plants - Central Europe - clasification},
}