Sep. 26, 2017

lakeside daisy, Tetraneuris herbacea

Lakeside daisy grows naturally in about 22 sites, all within the Great Lakes basin. The geology of the lake area creates exposed limestone beds that are chemically and hydrologically hostile to plant growth. Lakeside daisy has adapted remarkably well to these very basic and dry sites. There are about 20 sites in the Bruce Peninsula and Manitoulin Island area of Ontario, where it is called Manitoulin gold. There is one site each in Michigan and Ohio. No plants have been seen at the only Illinois site since 1981. The Ohio site is particularly hostile. It is actively quarried, with quarry debris being dumped on the plants. The species is listed as endangered in all these areas, and as threatened by the US. Beal Gardens, MSU, 5/27/14.