Hygrophila polysperma
Hygrophila polysperma
(Indian swampweed)
Plants
Exotic
Collection Info
Point Map
Species Profile
Animated Map
Impacts

38 results for Hygrophila polysperma (Indian swampweed)
Download Data
Click here for listing in all states

Page:12
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1889002 TXBexar[No locality description provided]2025 12100301 Upper San Antonio 
1889385 TXBexar[No locality description provided]2025 12100301 Upper San Antonio 
1656961 TXBexarSan Antonio River [at Brackenridge Park]2020 12100301 Upper San Antonioestablished
1656962 TXBexarSan Antonio River at Brackenridge Park at Red Oak Road2018 12100301 Upper San Antonioestablished
1676618 TXComal[No locality description provided]2020 12100202 Middle Guadalupe 
1708662 TXComal[No locality description provided]2021 12100202 Middle Guadalupe 
1752793 TXComal[No locality description provided]2024 12100202 Middle Guadalupe 
1889572 TXComal[No locality description provided]2025 12100202 Middle Guadalupe 
230453 TXComalComal River, Landa Park, New Braunfels, ca. 100 m upstream of Pecan Island.1994 12100202 Middle Guadalupeestablished
230467 TXComalComal River, Landa Park, New Braunfels, in spring run underneath Landa Dr.1994 12100202 Middle Guadalupeestablished
1471070 TXGuadalupeDunlap Reservoir2005 12100202 Middle Guadalupeestablished
1471192 TXGuadalupeDunlap Reservoir2009 12100202 Middle Guadalupefailed
1471292 TXGuadalupeLake McQueeney2004 12100202 Middle Guadalupeunknown
1748548 TXHays[No locality description provided]2022 12100203 San Marcos 
1747712 TXHays[No locality description provided]2022 12100203 San Marcos 
1748341 TXHays[No locality description provided]2022 12100203 San Marcos 
1749958 TXHays[No locality description provided]2023 12100203 San Marcos 
1752384 TXHays[No locality description provided]2024 12100203 San Marcos 
1888824 TXHays[No locality description provided]2024 12100203 San Marcos 
230475 TXHaysRio Vista Park, Purgatory Island, San Marcos1994 12100203 San Marcosestablished
230472 TXHaysSan Marcos River at Thompson's Island below county road bridge.1991 12100203 San Marcosestablished
230474 TXHaysSan Marcos River, at University Blvd.1991 12100203 San Marcosestablished
230468 TXHaysSan Marcos River, below Southwest Texas State University campus1969 12100203 San Marcosestablished
230470 TXHaysSan Marcos River, downstream from Clear Springs Apts. spillway.1976 12100203 San Marcosestablished
230476 TXHaysSan Marcos River, Lions' Park area, San Marcos1994 12100203 San Marcosestablished
Page:12

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/9/2025].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.