| Specimen ID | 1441816 |
| Group | Plants |
| Genus | Persicaria |
| Species | hydropiper |
| Common Name | marshpepper knotweed |
| State | CA |
| County | Mendocino |
| Locality | Russian River bottom at Squaw Rock, 6 miles south of Hopland |
| Mapping Accuracy | Accurate |
| HUC8 Name | Russian |
| HUC8 Number | 18010110 |
| HUC10 Name | Upper Russian River |
| HUC10 Number | 1801011004 |
| HUC12 Name | Cummiskey Creek-Russian River |
| HUC12 Number | 180101100410 |
| Map | |
| Collection Day | 15 |
| Collection Month | 8 |
| Collection Year | 1973 |
| Year Accuracy | Actual |
| Potential Pathway | dispersed |
| Status | established |
| Reference 1 |
| Ref. Number: | 25610 |
| Author: | Calflora |
| Date: | 2021 |
| Title: | The Calflora Database: Information on California plants for education, research and conservation |
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| Reference 2 |
| Ref. Number: | 16045 |
| Author: | Alexander, J., S. Markos, J. Yost, R.L. Moe, E. Dean, and M. Nazaire. |
| Date: | 2016 |
| Title: | Consortium of California Herbaria (CCH) |
| Publisher: | Regents of the University of California |
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| Comments | Calflora observation ID: cch:UCR280148 |
| Record Type | Literature |
| Disposal | UCR |
| Museum Cat Number | UCR280148 |
| Freshwater/Marine | Freshwater |
