| Specimen ID | 261693 |
| Group | Plants |
| Genus | Juncus |
| Species | compressus |
| Common Name | roundfruit rush |
| State | IL |
| County | Cook |
| Locality | East shoulder of I-294 about 1 mi N of Willow Rd. |
| Mapping Accuracy | Accurate |
| HUC8 Name | Des Plaines |
| HUC8 Number | 07120004 |
| HUC10 Name | Willow Creek-Des Plaines River |
| HUC10 Number | 0712000405 |
| HUC12 Name | McDonald Creek-Des Plaines River |
| HUC12 Number | 071200040503 |
| Map | |
| Collection Day | 8 |
| Collection Month | 9 |
| Collection Year | 1984 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed |
| Status | established |
| Comments | Cataloged at the Morton Arboretum |
| Record Type | Specimen |
| Museum Cat Number | 533 |
| Freshwater/Marine | Freshwater |
