
1) Order polygonales 2) Plant order
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https://www.crosswordclues.com/clue/polygonales

Polygonales was an order of flowering plants, recognized by several older systems, such as the Wettstein system, last revised in 1935, the Engler system, in its update of 1964, and the Cronquist system, 1981. Its circumscription was typically: In these systems the order is placed close to the order Caryophyllales (or its predecessor Centrospermae)...
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http://en.wikipedia.org/wiki/Polygonales

(from the article `angiosperm`) ...(goosefoot), Amaranthaceae (amaranth), Portulacaceae (purslane), Basellaceae, Molluginaceae, and Caryophyllaceae (pink). (See the article ...
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http://www.britannica.com/eb/a-z/p/90

[
n] - coextensive with the family Polygonaceae,
Found on
http://www.webdictionary.co.uk/definition.php?query=Polygonales
order Polygonales noun coextensive with the family Polygonaceae,
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.