| Specimen ID | 1257261 |
| Group | Plants |
| Genus | Callitriche |
| Species | stagnalis |
| Common Name | pond water-starwort |
| State | WA |
| County | Mason |
| Locality | Simpson (arrowhead) Lake |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Chehalis |
| HUC8 Number | 17100104 |
| HUC10 Name | Cloquallam Creek-Chehalis River |
| HUC10 Number | 1710010404 |
| HUC12 Name | Cloquallum Creek |
| HUC12 Number | 171001040403 |
| Map | |
| Collection Day | 12 |
| Collection Month | 8 |
| Collection Year | 2005 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | unknown |
| Reference 1 |
| Ref. Number: | 28080 |
| Author: | Environmental Assessment Program. |
| Date: | 2018 |
| Title: | |
| Publisher: | Washington State Department of Ecology |
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| Comments | some dense patches in shallow water and mud; clear, warm, calm. Freshwater sponges, filamentous algae on bottom in canals without plants. In main lake many areas with bare (or benthic blue-green algae coated) sediment. Plentiful P. obtusifolius at southeast end of the lake, other areas had scattered plants (see map). Water tea colored. |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
