| Specimen ID | 238557 |
| Group | Plants |
| Genus | Glyceria |
| Species | maxima |
| Common Name | reed mannagrass |
| State | IL |
| County | Lake |
| Locality | Illinois Beach State Park |
| Mapping Accuracy | Accurate |
| HUC8 Name | Pike-Root |
| HUC8 Number | 04040002 |
| HUC10 Name | Waukegan River-Frontal Lake Michigan |
| HUC10 Number | 0404000205 |
| HUC12 Name | Waukegan River-Frontal Lake Michigan |
| HUC12 Number | 040400020501 |
| Map | |
| Collection Day | 18 |
| Collection Month | 5 |
| Collection Year | 2006 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker | dispersed |
| Status | unknown |
| Reference 1 |
| Ref. Number: | 16112 |
| Author: | D. Nelson. |
| Date: | 2006 |
| Title: | Global Invasive Species Initiative listserve digest: "Glyceria maxima found in Illinois". |
| Publisher: | The Nature Conservancy. |
| Volume: | 2006 |
| Issue: | #146 |
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| Comments | Expanding in a circular pattern emanating from around a manhole cover that was installed many years ago. Treated in 2006 with repeat treatment anticipated in 2007. |
| Record Type | Literature |
| Earliest Record | state |
| Verifier | J. Ebinger & G. Tucker, Eastern Illinois Univ. |
| Freshwater/Marine | Freshwater |
| Specimen Impact | Out-competing thick cattail monoculture |
| Photo | |
