| Specimen ID | 1525770 |
| Group | Plants |
| Genus | Sagittaria |
| Species | graminea |
| Subspecies | graminea |
| Common Name | grassy arrowhead |
| State | WA |
| County | Mason |
| Locality | Mason Lake |
| Mapping Accuracy | Accurate |
| HUC8 Name | Puget Sound |
| HUC8 Number | 17110019 |
| HUC10 Name | Goldsborough Creek-Frontal Puget Sound |
| HUC10 Number | 1711001906 |
| HUC12 Name | Sherwood Creek |
| HUC12 Number | 171100190609 |
| Map | |
| Collection Day | 22 |
| Collection Month | 9 |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker on small watercraft | dispersed | escaped captivity |
| Status | established |
| Reference 1 |
| Ref. Number: | 28080 |
| Author: | Environmental Assessment Program. |
| Date: | 2018 |
| Title: | |
| Publisher: | Washington State Department of Ecology |
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| Record Type | Literature |
| Verifier | Washington State Department of Ecology |
| Freshwater/Marine | Freshwater |
