St. Louis Botanical Area

What are “St. Louis Area” plants? We want them to be truly ESTABLISHED and FINDABLE in our area, not just one-offs that were discovered near somebody’s flower garden or alongside a railroad track. To help screen-out isolated flukes, we made-up a rule:

Any “St. Louis Area” plant must have been recorded from at least 3 contiguous counties (among the 7 counties that surround the City of St. Louis).

Map of the 7 counties that we use
for our “St. Louis Botanical Area”