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This category contains the native flora of Arizona as defined by the World Geographical Scheme for Recording Plant Distributions. Taxa of the lowest rank are always included; taxa of higher ranks (e.g. genus) are only included if monotypic or endemic. Include taxa here that are endemic or have restricted distributions (e.g. only a few countries). Use regional categories when taxa have a larger distribution that is approximately coincides by that taxon's distribution (e.g. Category:Flora of the Southwestern United States) instead of each subordinate category of that region.