| Specimen ID | 1877181 |
| Group | Plants |
| Genus | Nymphoides |
| Species | humboldtiana |
| Common Name | Humboldt's floating-heart |
| State | TX |
| County | Matagorda |
| Locality | In deepest water at N end of SE cell of Pintail Pond (reservoir fed by irrigation water). Mad Island Marsh Preserve. Palacios NE Quadrangle |
| Mapping Accuracy | Accurate |
| HUC8 Name | East Matagorda Bay |
| HUC8 Number | 12100401 |
| HUC10 Name | East Branch Mad Island Slough-Matagorda Bay |
| HUC10 Number | 1210040104 |
| HUC12 Name | Mad Island Slough-Frontal Matagorda Bay |
| HUC12 Number | 121004010400 |
| Map | |
| Collection Day | 20 |
| Collection Month | 10 |
| Collection Year | 2010 |
| Year Accuracy | Actual |
| Reference 1 |
| Ref. Number: | 30522 |
| Author: | Yatskievych, G. (curator). |
| Date: | 2017 |
| Title: | University of Texas at Austin Herbarium (TEX) |
| Publisher: | University of Texas at Austin |
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| Reference 2 |
| Ref. Number: | 29238 |
| Author: | Botanical Research Institute of Texas |
| Date: | 2021 |
| Title: | Botanical Research Institute of Texas Philecology Herbarium (BRIT) |
| Publisher: | SEINet Data Portal |
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| Reference 3 |
| Ref. Number: | 29277 |
| Author: | SERNEC Data Portal |
| Date: | 2019 |
| Title: | SouthEast Regional Network of Expertise and Collections |
| Publisher: | Appalachian State University |
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| Record Type | Specimen |
| Disposal | TEX, BRIT |
| Museum Cat Number | TEX00471926, TEX00471927, BRIT53253 |
| Verifier | Beth Middleton |
| Year Class | Flower and fruit |