Triglochin palustris, Marsh Arrowgrass, a variety of arrowgrass found in damp grassland.
Ludwigia palustris | Caltha palustris | water violet ''(Hottonia palustris)'' | Viola palustris | Quercus palustris | Hottonia palustris | Triglochin palustris | Thelypteris palustris | Terebralia palustris | Tephrocybe palustris | Rosa palustris | Rorippa palustris | Rhodopseudomonas palustris | Radfordia palustris | Pinus palustris | Ortalis palustris | Littoridinops palustris | Lathyrus palustris | Eleocharis palustris | Eimeria palustris | Boeckella palustris | Aethiothemis palustris |