| Water-pepper (Persicaria hydropiper) | | 2020-09-15 | 2020-09-08 | Sørmarkveien (Rogaland, Norway) |  |
| Water-pepper (Persicaria hydropiper) | | 2020-09-15 | 2020-09-08 | Sørmarkveien (Rogaland, Norway) | |
| Water-pepper (Persicaria hydropiper) | | 2014-05-16 | 2014-05-16 | Moahaugen (haugen bak Ytrebygda skole) (Vestland, Norway) | |
| Water-pepper (Persicaria hydropiper) | | 1989-09-26 | 1989-09-26 | Storavatnet (Vestland, Norway) | |
| Water-pepper (Persicaria hydropiper) | | 1994-05-27 | 1994-05-27 | Ledengstjern (Østfold, Norway) | |
| Water-pepper (Persicaria hydropiper) | | 1989-09-01 | 1989-09-01 | Kolbjørnviksjøen (Østfold, Norway) | |