@book {12, title = {Regni Vegetabilis Systema Naturale, sive Ordines, Genera et Species Plantarum Secundum Methodi Naturalis Normas Digestarum et Descriptarum}, volume = {1}, year = {1817}, pages = {116}, publisher = {Sumptibus sociorum Treuttel et Würtz}, organization = {Sumptibus sociorum Treuttel et Würtz}, address = {Paris}, author = {Candolle, A.P. de} }