| Specimen ID | 1409862 |
| Group | Plants |
| Genus | Marsilea |
| Species | quadrifolia |
| Common Name | European water-clover |
| State | MA |
| County | Essex |
| Locality | Stevens Pond; On Ipswich Road, West of intersection with Georgetown Road |
| Mapping Accuracy | Accurate |
| HUC8 Name | Charles |
| HUC8 Number | 01090001 |
| HUC10 Name | Ipswich River |
| HUC10 Number | 0109000102 |
| HUC12 Name | Howlett Brook |
| HUC12 Number | 010900010204 |
| Map | |
| Collection Day | 9 |
| Collection Month | 9 |
| Collection Year | 2002 |
| Year Accuracy | Actual |
| Potential Pathway | hitch hiker | dispersed |
| Status | unknown |
| Reference 1 |
| Ref. Number: | 29921 |
| Author: | Mehrhoff, L.J., J.A. Silander, Jr., S.A. Leicht, E.S. Mosher, and N.M. Tabak |
| Date: | 2003 |
| Title: | IPANE: Invasive Plant Atlas of New England |
| Publisher: | Department of Ecology and Evolutionary Biology, University of Connecticut |
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| Reference 2 |
| Ref. Number: | 24369 |
| Author: | Center for Invasive Species and Ecosystem Health. |
| Date: | 2019 |
| Title: | EDDMapS: Early detection and distribution mapping system |
| Publisher: | The University of Georgia |
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| Comments | Waterclover was found at Northeast shore (near parking area by Ipswich Road). áUsed as a fishing spot. áLength of area measured was 40-45 feet long by 4.5 feet wide. áWater clover was growing on dry banks and floating in water. áSporagia were noticed wit; |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
| Number Collected | 100-999 |
| Year Class | Seedlings |
