| Specimen ID | 233204 |
| Group | Plants |
| Genus | Marsilea |
| Species | quadrifolia |
| Common Name | European water-clover |
| State | PA |
| County | Delaware |
| Locality | 1/2 mi NE of Wallingford |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lower Delaware |
| HUC8 Number | 02040202 |
| HUC10 Name | Raccoon Creek-Delaware River |
| HUC10 Number | 0204020206 |
| HUC12 Name | Crum Creek |
| HUC12 Number | 020402020601 |
| Map | |
| Collection Day | 8 |
| Collection Month | 9 |
| Collection Year | 1945 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | established |
| Reference 1 |
| Ref. Number: | 10762 |
| Author: | Johnson, D.M. |
| Date: | 1986 |
| Title: | Systematics of the New World species of Marsilea (Marsileaceae). |
| Journal: | Systematic Botany Monographs |
| Volume: | 11 |
| Pages: | 87 |
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| Record Type | Literature |
| Museum Cat Number | herb/ PH |
| Freshwater/Marine | Freshwater |
