| Specimen ID | 858910 |
| Group | Plants |
| Genus | Murdannia |
| Species | keisak |
| Common Name | marsh dewflower |
| State | OR |
| County | Clatsop |
| Locality | Astoria |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Columbia |
| HUC8 Number | 17080006 |
| HUC10 Name | Big Creek-Frontal Columbia River |
| HUC10 Number | 1708000601 |
| HUC12 Name | Bear Creek-Frontal Columbia River |
| HUC12 Number | 170800060103 |
| Map | |
| Collection Day | 1 |
| Collection Month | 8 |
| Collection Year | 1980 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 24851 |
| Author: | iMapInvasives. |
| Date: | 2016 |
| Title: | Oregon iMapInvasives |
| Publisher: | Oregon Biodiversity Information Center |
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| Comments | Collector: Duncan W. Thomas. OFP taxon: Murdannia keisak |
| Record Type | Literature |
| Disposal | OSC |
| Museum Cat Number | OSC155598 |
| Freshwater/Marine | Freshwater |
