| hydrilla verticillata | | usa: virginia, fairfax co., alexandria, potomac river | | 1886412383 |
| hydrilla verticillata | | usa: virginia, spotsylvania co., lake anna state park | | 1886412385 |
| hydrilla verticillata | | usa: virginia, fairfax co., alexandria, potomac river | | 1886412421 |
| hydrilla verticillata | | usa: virginia, spotsylvania co., lake anna state park | | 1886412423 |
| hydrilla verticillata | | usa: virginia, mecklenburg co., bracey, lake gaston | | 1779821162 |
| hydrilla verticillata | | usa: virginia, mecklenburg co., bracey, lake gaston | | 1779821066 |
| hydrilla verticillata | | usa: virginia, mecklenburg co., bracey, lake gaston | | 1622821041 |
| hydrilla verticillata | | usa: virginia, mecklenburg co., bracey, lake gaston | | 1622821016 |