United States, Illinois, DuPage, Morton Arboretum, At the south edge of Glen Ellyn, along the E side of IL 53 at the T intersection with Bemis Rd.; in ditch.
41.84662 -88.052812 +-203m. WGS84
based on collectors description
Agrostis alba; Ambrosia artemisiifolia var. elatior; Eleocharis calva; Festuca elatior; Hordeum jubatum; Lythrum salicaria; Plantago major; Scirpus atrovirens; S. validus var. creber; Typha angustifolia