CSWGCIN has developed a Collections database that allows users to find collections by location, by geographic extent, or by taxonomic extent. The Collections database has been extended in recent years to include important Floras (plant species checklists) from the Botany Department of Oklahoma State University (OSU). The FloraS collection from OSU is of immense value for understanding trends and geographic patterns of plant diversity. Despite their value, there have not yet been any comprehensive attempts to gather bibliographic information and biodiversity information from such floras. Data gathered from the FloraS collection will be used to analyze spatial patterns of diversity (in part, to test key ecological hypotheses).

The FloraS bibliography now contains 712 references within the CSWGCIN region. 368 of the 712 references were rejected from subsequent analysis, because they were duplicates, incomplete floras, from poorly defined regions, or had other issues that rendered them unsuitable. 192 floras from the region have complete geographic and taxonomic data recorded. Although native and exotic floras from the region have a highly significant species-area relationship, as shown in the density graph, there is still tremendous scatter. This means that floras vary dramatically (about tenfold) in species richness, even after accounting for spatial scale. The relationship is quite similar to that of North American floras as a whole.

The FloraS collections contains spatial information, and information on indigenous and exotic species.  The data from the FloraS collection indicates a higher percentage of exotics within certain FloraS collections in the eastern part of the CSWGCIN region, which is also the more populous area.  The data also show that native density levels reach a much greater level than exotic density levels.