| Specimen ID | 230630 |
| Group | Plants |
| Genus | Ludwigia |
| Species | grandiflora |
| Common Name | large-flower primrose-willow |
| State | OR |
| County | Multnomah |
| Locality | along the Columbia River and below Portland |
| Mapping Accuracy | Approximate |
| HUC8 Name | Lower Columbia-Clatskanie |
| HUC8 Number | 17080003 |
| Map | |
| Collection Year | 1969 |
| Year Accuracy | Publication Year |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 10614 |
| Author: | Hitchcock, C.L., A. Cronquist, M. Ownbey, and J.W. Thompson. |
| Date: | 1969 |
| Title: | Vascular Plants of the Pacific Northwest. Parts 1 - 5 (authors vary). |
| Publisher: | University of Washington Press, Seattle. |
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| Record Type | Literature |
| Earliest Record | drainage |
| Freshwater/Marine | Freshwater |