ADDITIONS TO THE VASCULAR FLORA, AND NOTES ON THE PHYTOGEOGRAPHY, OF LAKE COUNTY, MICHIGAN

摘要

The vascular flora of interior northern Lower Michigan is poorly represented in herbaria, with several counties ranking among the most sparsely collected in the Upper Great Lakes region. We initiated collecting in one of these counties, Lake County, in 2013. At the time, we were aware of 658 collections from the county, representing 437 vascular plant species. From 2013 through 2018, we added 698 specimens, representing 631 species, 559 of which were previously undocumented. As of early 2019, a totalof 1,006 species for the county are confirmed, placing Lake County among the best-collected counties in northern Lower Michigan. Among the most noteworthy collections were 12 state-listed (Endangered, Threatened, and Special Concern) species and 30 species at their statewide or Lower Peninsula range limits. Additional collecting in Lake County and surrounding counties is recommended to catalog regional diversity and to substantiate or amend species distributions.