| Specimen ID | 1428126 |
| Group | Plants |
| Genus | Helosciadium |
| Species | nodiflorum |
| Common Name | fool's watercress |
| State | CA |
| County | Alameda |
| Locality | Flat at toe of S. bank of Cerrito Creek |
| Mapping Accuracy | Accurate |
| HUC8 Name | San Pablo Bay |
| HUC8 Number | 18050002 |
| HUC10 Name | San Francisco Bay |
| HUC10 Number | 1805000210 |
| HUC12 Name | Angel Island-San Francisco Bay Estuaries |
| HUC12 Number | 180500021001 |
| Map | |
| Collection Day | 6 |
| Collection Month | 6 |
| Collection Year | 2017 |
| Year Accuracy | Actual |
| Potential Pathway | escaped captivity |
| 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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| Comments | Near-monoculture spring 2017 at toe of bank cleared two years ago, probably due to long flooding. Previous spring's creek monkeyflower gone; area also has been weeded extensively for hemlock, nightshade, other common weeds.) Point is approximate; plant also found upstream and downstream but less dense. See 1994 obs. by Barbara Ertter. May become dense in newly disturbed areas, as happened upstream after 1998-99 sewer rebuilding. Calflora |
| Record Type | Literature |
| Disposal | Calflora |
| Museum Cat Number | po38780 |
| Freshwater/Marine | Freshwater |
| Number Collected | 101-1000 |
| Year Class | Flower |
