| Alder (Alnus sp.) | | 2001-05-03 | 2001-05-10 | Illestadvatnet (Vestfold, Norway) | |
| Alder (Alnus sp.) | | 2001-04-19 | 2001-05-02 | Gudvangen (Vestland, Norway) | |
| Alder (Alnus sp.) | | 2001-05-09 | 2001-04-18 | Veierland (Vestfold, Norway) | |
| Grey Alder (Alnus incana) | | 1994-11-24 | 1994-11-24 | Vasslivatnet (Rogaland, Norway) |  |
| Grey Alder (Alnus incana) | | 1989-09-14 | 1989-09-14 | Myravatnet (Vestland, Norway) | |
| Grey Alder (Alnus incana) | | 1990-06-06 | 1990-06-06 | Kvitblikkvannet (Nordland, Norway) | |
| Grey Alder (Alnus incana) | | 1989-08-28 | 1989-08-28 | Arkavatnet (Rogaland, Norway) | |
| Grey Alder (Alnus incana) | | 1992-06-12 | 1992-06-12 | Fløyta (Akershus, Norway) | |
| Black Alder (Alnus glutinosa) | | 1993-06-16 | 1993-06-16 | Hostadvatnet (Møre og Romsdal, Norway) | |
| Black Alder (Alnus glutinosa) | | 1990-09-18 | 1990-09-18 | Hostadvatnet (Møre og Romsdal, Norway) | |
| Black Alder (Alnus glutinosa) | | 1989-09-01 | 1989-09-01 | Kolbjørnviksjøen (Østfold, Norway) | |