The second stage of hydrosere is occupied by plants like

Hydrosere originating in a pond starts with colonization of some phytoplanktons which forms the pioneer plant community. The stages are Ist-Bacteria, Blue-green algae, Algae IInd-Hydrilla Potamogeton, Vallisneria IIIrd-Nelumbo, Nymphaea, Trapa, Azolla, Wolffia IVth-Typha, Sagitaria V-Juncus, Cyperus VI-Salix, Populus, Almus