Polygonales was an order of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s recognized by several older systems such as the

Wettstein system A system of plant taxonomy, the Wettstein system recognised the following main groups, according to Richard Wettstein's ''Handbuch der Systematischen Botanik'' (1901–1924). 3rd edition (1924) Outline Synopsis * Flagellatae p. 65 * ...

, last revised in 1935, the

Engler system One of the prime systems of plant taxonomy, the Engler system was devised by Adolf Engler (1844–1930), and is featured in two major taxonomic texts he authored or co-authored. His influence is reflected in the use of the terms "Engler School" and ...

, in its update of 1964, and the

Cronquist system The Cronquist system is a taxonomic classification system of flowering plants. It was developed by Arthur Cronquist in a series of monographs and texts, including ''The Evolution and Classification of Flowering Plants'' (1968; 2nd edition, 1988) ...

, 1981. Its circumscription was typically: * order Polygonales *: family

Polygonaceae The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus '' Polygonum'', and was first used by Antoine Laurent de Jussieu in 1 ...

In these systems the order is placed close to the order

Caryophyllales Caryophyllales ( ) is a diverse and heterogeneous order of flowering plants that includes the cacti, carnations, amaranths, ice plants, beets, and many carnivorous plants. Many members are succulent, having fleshy stems or leaves. The betalai ...

(or its predecessor

Centrospermae ''Centrospermae'' is a descriptive botanical name, published in 1878 by August W. Eichler, Eichler, meaning "with the seed in the center", referring to the Placentation#In_plants, free (central) placentation. It was used in the Engler system and ...

). Cronquist placed this order in his subclass Caryophyllidae of three orders. Dahlgren placed the order Polygonales within the superorder Polygoniflorae, alternatively Polygonanae.

References

{{Reflist Historically recognized angiosperm orders