The Cronquist system is a taxonomic classification system of flowering plants. Wikipedia

A system attributed to Arthur J. Cronquist. Many authors use their own variation of this system, which they also refer to as the Cronquist system. Cronquist himself published An Integrated System of Classification of Flowering Plants and The Evolution and Classification of Flowering Plants. Wikipedia Disambiguation

System of plant classification Wikidata

A taxonomic classification system for flowering plants. Wiktionary