De Candolle system

The De Candolle system is a system of plant taxonomy by French botanist Augustin Pyramus de Candolle (1778−1841).

History

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.

Systems

The De Candolle system recognises the following groups of vascular plants (references to Prodromus):

Flore française

11 families

Vol IV - 2 parts Vol V[6]

Théorie élémentaire de la botanique

List of De Candolle system families recognized in the Théorie élémentaire de la botanique (1813), on page 213:[1]

Prodromus

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]

Subclassis I. THALAMIFLORÆ [Part I]

(Index to Part I p. 741)

Subclassis II. CALYCIFLORÆ [Parts II - VII]

Subclassis III. COROLLIFLORÆ [Parts VIII - XIII(1)]

Subclassis IV. MONOCHLAMYDEÆ [Parts XIII(2) - XVI]

Other

Somewhat inconsistently the Prodromus also treats:

(Overall Index Part XVII Page 323)

References

Bibliography

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