| Specimen ID | 230674 |
| Group | Plants |
| Genus | Hydrilla |
| Species | verticillata |
| Subspecies | verticillata |
| Common Name | whorled hydrilla |
| State | TX |
| County | Comal |
| Locality | Canyon Reservoir |
| Mapping Accuracy | Accurate |
| HUC8 Name | Upper Guadalupe |
| HUC8 Number | 12100201 |
| HUC10 Name | Guadalupe River-Canyon Lake |
| HUC10 Number | 1210020104 |
| HUC12 Name | Tom Creek-Canyon Lake |
| HUC12 Number | 121002010407 |
| Map | |
| Collection Year | 1995 |
| Year Accuracy | Actual |
| Potential Pathway | unknown |
| Status | eradicated |
| Reference 1 |
| Ref. Number: | 10233 |
| Author: | Helton, R.J., and L.H. Hartmann. |
| Date: | 1996 |
| Title: | Statewide Aquatic Vegetation Survey Summary, 1995 Report. |
| Publisher: | Inland Fisheries Division, District 3-E, Jasper, Texas. |
| Pages: | 38 |
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| Reference 2 |
| Ref. Number: | 27701 |
| Author: | Texas Invasive Plant and Pest Council. |
| Date: | 2018 |
| Title: | Texas Invasives Database |
| Publisher: | Lady Bird Johnson Wildflower Center |
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| Comments | Surveys in 2003, 2007, and 2011 found no plants |
| Record Type | Literature |
| Freshwater/Marine | Freshwater |
