| Specimen ID | 1441767 |
| Group | Plants |
| Genus | Persicaria |
| Species | hydropiper |
| Common Name | marshpepper knotweed |
| State | CA |
| County | Sonoma |
| Locality | Sugarloaf Ridge State Park. About 50 air miles N of San Francisco, 10 air miles E of Santa Rosa, 2.5 air miles NE of Kenwood and 18 air miles NW of Napa. Just south of midpoint between Mt. Hood and Red Mountain. Road on ridge West of Bear Ck. |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Pablo Bay |
| HUC8 Number | 18050002 |
| HUC10 Name | Sonoma Creek-Frontal San Pablo Bay Estuaries |
| HUC10 Number | 1805000203 |
| HUC12 Name | Upper Sonoma Creek |
| HUC12 Number | 180500020301 |
| Map | |
| Collection Day | 18 |
| Collection Month | 7 |
| Collection Year | 1997 |
| 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:UCD99060 |
| Record Type | Literature |
| Disposal | UCD |
| Museum Cat Number | UCD103207 |
| Freshwater/Marine | Freshwater |
