The first taxonomic system by de Candolle, who introduced the term taxonomy, appeared in his description of the plants of France, his Flore française (1805–1815), in 5 volumes dealing with plant species found in France.
in de Candolle's work and subsequent literature refers to his Regni vegetabilis systema naturale.
The De Candolle system recognises the following groups of vascular plants (references to Prodromus).
Within the Prodromus he cross references his earlier Regni vegetabilis systema naturale.
[2] Note that this system was published well before there were internationally accepted rules for botanical nomenclature.