species richness, genus richness, family richness, exotic plant richness, year of study, bibliographic information, elevation, geographic bounds, jurisdiction, area
vascular plants
This is a subset of the floras of North America project
too numerous to list
Other, USA. Includes all gulf states
mid 19th century to present, but best resolution after 1950
data extracted from published floras
Digital
bibliography in Endnote, data in excel - but am currently working towards streamlining into a single product. The data are continually updated.
