| Specimen ID | 252751 |
| Group | Plants |
| Genus | Ludwigia |
| Species | grandiflora |
| Common Name | large-flower primrose-willow |
| State | CA |
| County | Marin |
| Locality | Nicasio Reservoir |
| Mapping Accuracy | Accurate |
| HUC8 Name | Tomales-Drake Bays |
| HUC8 Number | 18050005 |
| HUC10 Name | Lagunitas Creek |
| HUC10 Number | 1805000501 |
| HUC12 Name | Nicasio Creek |
| HUC12 Number | 180500050102 |
| Map | |
| Collection Day | 1 |
| Collection Month | 8 |
| Collection Year | 2006 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 17898 |
| Author: | Anonymous |
| Date: | 2007 |
| Title: | Aquatic weed assessment for the Marin Municipal Water District’s seven reservoirs. |
| Publisher: | Aquatic Environments, Inc, Concord, California. |
| Volume: | 2007 |
| Issue: | July 31 |
| Pages: | 47 pp |
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| Comments | Prolific in 2006, forming dense mats covering the shallows |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
