| Specimen ID | 279632 |
| Group | Plants |
| Genus | Trapa |
| Species | natans |
| Common Name | water chestnut |
| State | MA |
| County | Middlesex |
| Locality | The Holt, Concord River |
| Mapping Accuracy | Accurate |
| HUC8 Name | Concord River |
| HUC8 Number | 01070005 |
| HUC10 Name | Sudbury River |
| HUC10 Number | 0107000501 |
| HUC12 Name | Hop Brook-Sudbury River |
| HUC12 Number | 010700050104 |
| Map | |
| Collection Day | 29 |
| Collection Month | 8 |
| Collection Year | 1879 |
| Year Accuracy | Actual |
| Potential Pathway | planted ornamental |
| Status | established |
| Reference 1 |
| Ref. Number: | 703 |
| Author: | Mills, E.L., J.H. Leach, J.T. Carlton, and C.L. Secor |
| Date: | 1993 |
| Title: | Exotic species in the Great Lakes: a history of biotic crises and anthropogenic introductions |
| Journal: | Journal of Great Lakes Research |
| Volume: | 19 |
| Issue: | 1 |
| Pages: | 1-54 |
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| Reference 2 |
| Ref. Number: | 23862 |
| Author: | Eaton, R.J. |
| Date: | 1947 |
| Title: | Lemna minor as an aggressive weed in the Sudbury River. |
| Journal: | Rhodora |
| Volume: | 49 |
| Issue: | 583 |
| Pages: | 165-171 |
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| Reference 3 |
| Ref. Number: | 27725 |
| Author: | Consortium of Northeastern Herberia (CNH). |
| Date: | 2023 |
| Title: | Herbarium Specimen Data Sharing Portal for CNH |
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| Comments | widely distributed and aggressive in the Concord and Sudbury Rivers. (Ref 2 collection date is incorrect; specimen notes indicates likely from 1879)
HUH specimen |
| Record Type | Specimen |
| Earliest Record | drainage |
| Disposal | Herbarium |
| Museum Cat Number | NEBC00283769, NEBC00283770 |
| Verifier | C.B. Hellquist |
| Freshwater/Marine | Freshwater |
| Photo | |
