United States, Illinois, Cook, Thornton Fractional Prairie.
Thornton Fractional Prairie. Calumet City. 15600 South Superior St., 3 blocks west of Burnham Ave. Collected north of north trail, west of school in wet prairie swale.
Wet prairie swale
Lythrum alatum, Spartina pectinata, Veronicastrum virginicum, Apocynum sibiricum, Stachys tenuifolia var. hispida, Baptisia leucantha, Andropogon gerardii, Rudbeckia hirta, Phlox glaberrima var. inter
Delicate, tall herb with white flower umbels. Scattered in swale