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.
The De Candolle system is a subsequent taxonomic system.
It was originally published by de Candolle in the Théorie élémentaire de la botanique, ou exposition des principes de la classification naturelle et de l’art de décrire et d’etudier les végétaux (1813).[1]
The abbreviation Syst. in de Candolle's work and subsequent literature refers to his Regni vegetabilis systema naturale.
Systems
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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.
A general schema is laid out in the Regnii vegetabilis pp. 117–122, as follows:[3]
Plantae Vasculares seu Cotyledoneae DC.[4]
classis I. DICOTYLEDONEÆ seu Exogenae [Part 1 p. 1]
I. VÉGÉTAUX VASCULAIRES OU COTYLÉDONÉS p. 213 (113 families)
1. Exogènes ou dicotylédones p. 213
2. Endogènes ou monocotylédonés p. 219
A. Phanérogames p. 219 (21 families)
114. Cycadées p. 219
124. Amaryllidées
128. Liliacées
1. Asparagées
2. Trilliacées
3. Asphodelées
4. Bromeliées
5. Tulipacées
135. Graminées
B. Cryptogames p. 220 (4 families)
II. VÉGÉTAUX CELLULAIRES OU ACOTYLÉDONÉS p. 220 (6 families)
Prodromus
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The De Candolle system families were further developed in the Prodromus (1824–1873).[2]
Note that this system was published well before there were internationally accepted rules for botanical nomenclature. Here, a family is indicated as "ordo". Terminations for families were not what they are now. Neither of these phenomena is a problem from a nomenclatural perspective, the present day ICBN provides for this.
Within the dicotyledons ("classis prima DICOTYLEDONEÆ") the De Candolle system recognises (Pagination from Prodromus, 17 Parts) the list:[2]
Buek, H.W. (1840–1874). Genera, species et synonyma Candolleana: alphabetico ordine disposita, seu Index generalis et specialis ad A.P. Decandolle, Prodromum systematis naturalis regni vegetabilis. Berlin: Sumptibus librariae Nauckianae.
De Candolle
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de Candolle, Augustin Pyramus (1818–1821). Regni vegetabilis systema naturale, sive Ordines, genera et species plantarum secundum methodi naturalis normas digestarum et descriptarum 2 vols. Paris: Treuttel et Würtz.
de Candolle, AP (1819) [1813]. Théorie élémentaire de la botanique, ou exposition des principes de la classification naturelle et de l'art de décrire et d'etudier les végétaux (2nd ed.).
de Candolle, AP (1824–1873). Prodromus systemati naturalis regni vegetabilis sive enumeratio contracta ordinum, generum specierumque plantarum huc usque cognitarum, juxta methodi naturalis normas digesta. (also available online at Gallica)
de Lamarck, Jean-Baptiste; de Candolle, Augustin Pyramus (1815a). Flore française ou descriptions succinctes de toutes les plantes qui croissent naturellement en France disposées selon une nouvelle méthode d'analyse; et précédées par un exposé des principes élémentaires de la botanique(vol. III) (3 ed.). Paris: Desray. Retrieved 29 October 2014.
de Lamarck, Jean-Baptiste; de Candolle, Augustin Pyramus (1815b). Flore française ou descriptions succinctes de toutes les plantes qui croissent naturellement en France disposées selon une nouvelle méthode d'analyse; et précédées par un exposé des principes élémentaires de la botanique(vol. V) (3 ed.). Paris: Desray. Retrieved 29 October 2014.